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Dr. Jennifer Johnson-Caldwell MD

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Dr. Jennifer Johnson-Caldwell MD is an internal medicine practice in Houston, Texas. Dr. Johnson-Caldwell, who has nearly 25 years of experience, works with her team to deliver personalized health care to patients ages 16 and over.

Healthcare is important to the team at Dr. Jennifer Johnson-Caldwell MD. Healthcare is comprehensive. It focuses on treating the root cause of a medical condition rather than masking the symptoms. Prevention and early intervention are key for halting illness or disease before it progresses.

The practice offers annual physical exams to connect with their patients and track their health. These yearly exams help Dr. Johnson-Caldwell and the team identify early signs of disease, so patients can get the treatment they need as soon as possible. They also provide a wide range of lab services, including comprehensive metabolic panels, cholesterol checks, complete blood counts (CBCs), and lipid panels.

Dr. Johnson-Caldwell has extensive experience working with patients of all ages. The practice delivers individualized care to young adults and geriatric patients alike. The team performs regular health screenings for osteoporosis, hypertension (high blood pressure), diabetes, and more.

Along with a wide range of physical health services, Dr. Jennifer Johnson-Caldwell MD diagnoses and treats mental health disorders like anxiety and depression. Psychotherapy referrals as needed and medication are just a couple of treatments the team uses to help patients overcome negative thoughts and behaviors.

To schedule an in-person or telemedicine visit with Dr. Jennifer Johnson-Caldwell MD, call the office or book an appointment online today.

 

Dr. Robin Boliver-Campbell, MD is an internal medicine specialist in Houston, TX and has over 30 years of experience in the medical field. She graduated from WRIGHT STATE UNIVERSITY / MAIN CAMPUS in 1993. She is affiliated with Hca Houston Healthcare Medical Center.  Join our practice in 2022, she has added an additional level of care and expertise to the practice.  She is highly knowlegdeable and caring, Dr. Boliver-Campbell communicates medicine and procedures clearly and patiently to both the patient and the staff to insure quailty care.

Humayun Naqvi, MD, MBA, FACC at West Houston Heart Center in Houston, Texas, provides outstanding cardiology care for residents throughout Harris County and other nearby communities. Although Dr. Naqvi is a skilled cardiologist with extensive experience treating heart disease, he prefers to pursue prevention whenever possible.

Dr. Naqvi grew up in Katy, Texas, and has lived most of his life in Houston. He completed his medical training at Texas A&M Health Science Center School of Medicine and his internal medicine residency at the University of Texas at Houston.

During his residency program, Dr. Naqvi worked extensively with several specialists at the highly esteemed Texas Medical Center. He then completed his cardiology training at the University of Texas at San Antonio, developing a vast array of skills required to treat and prevent cardiac disease. 

During his training, Dr. Naqvi developed a heart for preventing rather than only treating heart disease. He also recognized that many patients feel forgotten and even ignored during their experiences with the nation’s healthcare system. He has since made it his mission to create a practice that allows him quality time with every patient as he helps them conquer the challenges of heart disease.

His preventive cardiology strategies include ongoing support that creates a lifetime professional relationship with men and women seeking to live their healthiest life while receiving the personalized care they require.  

Dr. Kevin Loudermilk is a board-certified pulmonary and critical care physician dedicated to providing thorough, compassionate care for patients with lung and breathing conditions. He also maintains certification in internal medicine and offers virtual urgent and primary care services. Dr. Loudermilk’s approach emphasizes clear communication, evidence-based treatment, and improving access to high-quality respiratory and general medical care.

Darshan Anandu, MD, is an experienced gastroenterologist at GI Specialists of Houston, LLP, with several convenient locations in Baytown, North Loop, Houston, and Humble, Texas. He is dedicated to providing comprehensive, individualized care to his patients.

Dr. Anandu ​earned his medical degree at the University of Texas Health Science Center in San Antonio, Texas. He then completed his residency in internal medicine at the University of Texas Medical Branch in Galveston, Texas. During his last year, he served as chief resident. Afterward, Dr. Anandu served as a clinical fellow in the Division of Gastroenterology at McGovern Medical School, part of the University of Texas Houston Medical School.

He is board certified by the American Board of Internal Medicine in gastroenterology.

Dr. Anandu welcomes new and existing patients to GI Specialists of Houston, LLP, and looks forward to partnering with them on their health journey. Schedule an appointment by calling the office or booking online today. 

Sunil K. Saraf, MD, FACAAI, FAAAAI is a board-certified allergist and immunologist who works with patients seeking relief from a wide range of conditions at The Allergy Clinic. He spends significant time with each patient to ensure he has explained their condition clearly and has answered all of their questions.

After completing his medical schooling at Banaras Hindu University’s Institute of Medical Sciences, one of the premier medical colleges in India, Dr. Saraf completed his internal medicine internship and residency at Queens Hospital Center, a program affiliated with Mount Sinai Hospital in New York City, followed by a fellowship in allergy and immunology at University of Iowa Hospitals and Clinics in Iowa City.

Dr. Saraf has served as vice president of the Kentucky chapter of the American Association of Physicians of Indian Origin (AAPI). He is a fellow of the American College of Allergy, Asthma and Immunology and the American Academy of Allergy, Asthma and Immunology, and is board-certified by the American Board of Allergy and Immunology. He is the recipient of a Bridges to Excellence – Asthma Care Recognition Program, which identifies clinicians who deliver high-value asthma care to patients. Dr. Saraf was recently voted Best Allergist/Immunologist in Houston by H Texas Magazine readers.

Dr. Saraf sees patients at our Pasadena office on Mondays, Tuesdays, Wednesdays, Fridays and Saturdays.  As an allergy sufferer himself, Dr. Saraf personally understands how someone's quality of life can be affected by ongoing allergy ailments.

Hiwet Clinic Primary Care is the high caliber and efficient go-to clinic for exceptional care in Houston, Texas. The friendly and collaborative medical group spends time addressing the unique needs of every individual.

Hiwet Clinic Primary Care is renowned for prompt, affordable, and reliable service. Some of the available services and treatments include vaccinations, X-ray referrals, random drug testing for the DOT consortium, and a variety of examinations, including DOT physicals. The team also provides weight-loss programs and education on healthy lifestyle changes to improve wellness.

With an integrative and personalized approach to medicine, the caring team treats a wide range of health conditions, including hypertension, abscesses, urinary tract infections, fever, the flu, allergies, bronchitis, and injuries such as burns and minor lacerations.

For added convenience, Hiwet Clinic Primary Care is also a walk-in and urgent-care clinic, so patients don’t have to waste hours in an emergency room for minor needs that can be quickly addressed. The team offers a state-of-the-art, in-office laboratory for quality testing that can shine a spotlight on what’s causing even more complex health problems.

From minor ailments to non-life-threatening emergencies, the compassionate health professionals of Hiwet Clinic Primary Care provide unwavering and valuable medical support when it’s needed most.

Vivian Young, MSN, APRN, PMHNP-BC is a skilled and practiced board-certified and licensed psychiatric mental health nurse practitioner at Lifespan Psychiatry & Wellness Center in Houston, Texas. Vivian is devoted to providing the highest standard of mental health for patients across their lifespan.

She obtained a Bachelor of Science in Nursing (BSN). She graduated Cum Laude from Texas Woman’s University in Houston, Texas, followed by a Master of Science in Nursing (MSN) from Walden University in Minneapolis, Minnesota. Since 2020, Vivian has served as a PMHNP Student preceptor for students completing clinical rotations for graduate-level PMHNP programs.

With over 15 years of experience as a Registered Nurse (RN), Vivian has a particular interest in psychiatry and mental health, quality assurance (QA), home health care, skilled nursing, case management, medical/surgical care, and long-term acute care (LTAC).

As a psychiatric mental health nurse practitioner, Vivian leads with medication management as a primary form of treatment. However, she can also provide support therapy in combination.

She consults with psychiatrists on cases beyond the scope of nurse practitioner qualification. She works with other staff, such as therapists and social workers, to determine diagnoses and develop the best care plan. She also collaborates with other mental health professionals and primary care providers to discuss treatment plans and patient progress.

Vivian tailors each patient’s treatment plan to individual health needs and conditions. She utilizes her educational achievements and clinical experience for continued growth, enhancement, innovation, and diversity, aiming to deliver personalized and quality care to clients consistently.

She is passionate about educating patients and families on behaviors related to mental disorders, advocates for mental health clients and their families, and facilitates therapy and crisis response to clients.

Specializing in gastrointestinal (digestive) disorders at Katy Digestive Center in Katy, Texas, board-certified gastroenterologist Murtaza Arif, MD, offers a variety of solutions to treat acute and chronic digestive health conditions. Dr. Arif is an active member of the American College of Gastroenterology (ACG) and the American Society for Gastrointestinal Endoscopy (ASGE). Dr. Arif is a staff member of Katy-area hospitals, including Memorial Hermann Katy and Houston Methodist West.

Graduating with his residency training in Internal Medicine from the Medical College of Wisconsin, Dr. Arif completed his fellowship training in Gastroenterology at the University of Missouri. He then pursued advanced training in therapeutic endoscopy at Geisinger Medical Center in Pennsylvania.

In addition to his extensive clinical experience, Dr. Arif is the author and coauthor of several peer-reviewed journal articles, case studies, and book chapters that address gastroenterology conditions and treatments. He is especially passionate about his work in colon cancer screening and prevention.

At Katy Digestive Center, Dr. Arif provides comprehensive diagnostic and treatment services to address digestive disorders, including inflammatory bowel disease, irritable bowel syndrome, celiac disease, gastrointestinal bleeding, constipation, diarrhea, acid reflux, and peptic ulcer disease, using the latest medical technologies. He offers a complete range of endoscopic procedures including upper endoscopy, colonoscopy, capsule endoscopy, and ERCP to ensure patients have answers quickly.

Dr. Arif is dedicated to providing the highest quality care and is known for his compassionate, comprehensive approach and his empathy for patient health care struggles. At Katy Digestive Center, Dr. Arif and his staff provide an opportunity for patients to ask questions, address their queries, and help them develop a better understanding of their symptoms.

SE HABLA ESPAÑOL

Ali El-Halwagi, MD, MPH, is double board certified in Internal Medicine and Rheumatology. He is dedicated to delivering compassionate, personalized care to every patient he serves. Dr. El-Halwagi graduated summa cum laude from Texas A&M University with a Bachelor of Science in Chemical Engineering. He then relocated to Houston to attend Baylor College of Medicine, where he earned his medical degree with honors. In addition, he holds a Master of Public Health from the University of Texas, reflecting his commitment to understanding and addressing the diverse needs of the community.

Dr. El-Halwagi completed his residency in Internal Medicine at Baylor College of Medicine, where he also served as chief resident. During this time, he gained valuable experience as a hospitalist at Ben Taub General Hospital and Baylor St. Luke’s Medical Center. He went on to complete his fellowship in Rheumatology at Baylor College of Medicine.

Throughout his training, Dr. El-Halwagi has been recognized with multiple honors for his humanistic approach to medicine, dedication to teaching, and excellence in patient care. He is a member of the Alpha Omega Alpha Honor Medical Society and the Gold Humanism Honor Society. He remains actively engaged with the American College of Rheumatology, participating in networking, conference planning, and ongoing professional development.

Dr. El-Halwagi is passionate about improving patient outcomes and building lasting relationships with his patients. Outside of medicine, he enjoys spending time with his family and traveling.

Kiran Farheen, MD, is a triple board-certified physician in internal medicine, rheumatology, and obesity medicine, proudly serving the Katy, Texas community. With over a decade of clinical experience, Dr. Farheen is dedicated to delivering comprehensive, patient-centered care.

Dr. Farheen earned her medical degree from the University of Texas Medical Branch at Galveston. She completed her residency in internal medicine and fellowship in rheumatology at the University of Texas Health Science Center at Houston, where she trained under leading experts and conducted advanced research in ankylosing spondylitis. Before establishing her own practice, Dr. Farheen served as an Assistant Professor of Rheumatology and Clinical Immunogenetics for five years.

Committed to lifelong learning, Dr. Farheen views each patient encounter as an opportunity to grow and refine her approach. She believes in guiding and empowering patients to achieve their best possible health outcomes. Drawing from her experiences as a mother, daughter, wife, and sister, Dr. Farheen strives to connect with each patient on a personal level, treating them as individuals rather than just their diagnoses.

Recognizing the profound impact that chronic diseases can have on every aspect of life, Dr. Farheen is dedicated to providing compassionate, individualized care tailored to each patient’s unique needs. 

Meet Abida Hasan, DO
Board-Certified Rheumatologist

We are honored to have Dr. Abida Hasan, DO as a valued member of our rheumatology team. Dr. Hasan is a board-certified rheumatologist known for her clinical excellence, leadership in academic medicine, and unwavering commitment to patient-centered care.

Dr. Hasan completed both her Internal Medicine residency and Rheumatology fellowship at the prestigious State University of New York (SUNY) Downstate Medical Center in Brooklyn, New York. During her fellowship, she was selected to serve as Chief Rheumatology Fellow in her final year—an acknowledgment of her leadership, clinical acumen, and dedication to the field. Notably, she made history at SUNY Downstate as the first woman to be awarded the distinguished Dr. Douglas Mund Award, an honor given to a fellow demonstrating outstanding aptitude, professionalism, and excellence in rheumatologic care.

Following her fellowship, Dr. Hasan joined the University of California San Francisco (UCSF) – Fresno as a Clinical Instructor of Medicine in the Department of Rheumatology. There, she played an active role in both patient care and the academic development of medical residents and fellows, while continuing her commitment to advancing the field through research. Her scholarly work has been featured in multiple peer-reviewed scientific journals, reflecting her passion for evidence-based practice and clinical innovation.

Dr. Hasan specializes in the diagnosis and management of a broad spectrum of autoimmune and inflammatory conditions, including rheumatoid arthritis, lupus, psoriatic arthritis, scleroderma, vasculitis, and other connective tissue diseases. She combines the most current clinical guidelines with a deeply compassionate approach to care—ensuring her patients feel heard, understood, and empowered in their treatment journey.

Known for her exceptional bedside manner, clinical precision, and integrity, Dr. Hasan is widely respected by colleagues and deeply trusted by patients. She takes pride in forming long-term therapeutic relationships and delivering personalized treatment plans that enhance quality of life.

When she’s not in the clinic, Dr. Hasan enjoys reading, traveling, and spending quality time with family and friends.

Dr. Syed Farhat A. Zaidi, MD, is a board-certified internist at Integrative Primary Care who specializes in diabetes, hypertension, emphysema, asthma, heart disease, and geriatric care. With a special emphasis on preventive medicine, Dr. Zaidi helps his patients in the Houston and Katy, Texas, area stay one step ahead of their health.

Dr. Zaidi completed his residency at the University of Missouri, Columbia, in 1999. Before coming to Texas, he was on the faculty at the University of Connecticut, Hartford, for three years. Dr. Zaidi is affiliated with many local Katy/West Houston area hospitals, as well as nursing homes in the region.

To stay abreast of the latest medical advances, Dr. Zaidi is a member of the New Mexico Medical Society.

Currently, Dr. Zaidi resides in Katy with his wife and two girls. His hobbies include photography, hunting, fishing, flying, and biking.

About Unifying Health Center

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Unifying Health Center is a premier wellness and Internal Medicine center led by Yashash Pathak, MD, and his highly trained team serving Sugar Land, Texas, and the surrounding Houston area. At Unifying Health Center, we specialize in Internal Medicine, Primary Care, Wellness and Direct Access Care, LIPOcel treatment, and Membership Medicine.

The compassionate and experienced team cares for patients ages 14 and older and takes a holistic approach to medicine. They specialize in LIPOcel treatment to destroy fat cells and MLS infrared laser therapy to treat chronic pain and inflammation, as well as arthritis pain and sports injuries.

Dr. Pathak is Board Certified in Internal Medicine and a leader in his field. He and his staff have many years of experience taking a hybrid-direct, primary-care model approach, combining Western medicine with Eastern philosophies and treatments.

In addition to LIPOcel treatment and MLS laser therapy, some of the many services available at Unifying Health Center include electromagnetic rejuvenation, onsite yoga and meditation, and nutrition therapy. The team also offers COVID-19 antibody testing, electrocardiograms (EKGs), pre-surgical evaluations, STD testing.

Unifying Health Center offers cash-based memberships with Internal Medicine/primary care and wellness platforms. They see patients without insurance and accept Blue Cross and Blue Shield of Texas, United Healthcare, CIGNA, HUMANA, and AETNA.

Unifying Health Center also offers telemedicine visits, so you can receive medical evaluations and treatment from the comfort of your home. The medical staff provides Ayurveda consultations at a discounted price. Health insurance covers some wellness treatments, while others are cash-based.

To schedule an appointment with Dr. Yashash Pathak, MD, and the Unifying Health Center team, call the office or book an appointment online today.

Dr. Shebey Thomas, MD, is a board-certified Internal Medicine physician with over a decade of experience across diverse healthcare settings. He earned his MD from the University of Debrecen Medical School in Hungary and completed his residency in Internal Medicine at Robert Packer Hospital/Guthrie Clinic, Pennsylvania, where he received multiple awards, including Resident of the Year. Dr. Thomas is the owner and Medical Director of Riverstone Medical Associates in Missouri City, Texas, where he specializes in providing primary and ambulatory care. With expertise in internal medicine, he is also actively involved in clinical research, teaching, and quality improvement projects. His contributions to medicine are complemented by published abstracts and recognition for professionalism and excellence.