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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.  

Mariette Pierre, MD, is board-certified in internal medicine and pediatrics. She serves the downtown Houston community at Pierre Physician Group.

Dr. Pierre obtained her medical degree from the University of Arkansas College of Medicine and completed her internship, residency, and chief residency at Wayne State University, Detroit Medical Center in Detroit.

Since relocating to Texas in 2004, Dr. Pierre has provided exceptional care to patients in the metropolitan Houston and east Texas areas.

OUR CLINIC IN HOUSTON TEXAS IS WORKING FOR YOU.

The scope of practice at Pierre Physician Group includes internal medicine with a focus on early diagnosis, treatment, and prevention. Whether it’s diabetes, high blood pressure, or obesity, the team at Pierre Physician Group believes that treatment begins before symptoms arise through diet, exercise, supplements, and an approach that encompasses both mind and body.

The clinic in Houston works for you and strives to provide the highest standard of care at every step of your health care journey. Call or make an appointment online to visit Dr. Pierre and the team at Pierre Physician Group.

Dr. Jennifer Johnson-Caldwell MD

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.

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.

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.

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.

Allison Walworth, DO, is a board-certified Internal Medicine physician who joins Magnolia Family Medicine with years of experience. Dr. Walworth completed her internal medicine residency at Medical City Arlington in Arlington, TX and earned her medical degree from Burrell College of Osteopathic Medicine in Las Cruces, NM.

She is committed to evidence-based care with a patient-centered focus and welcomes adult patients with a personalized touch. Outside of work, Dr. Walworth enjoys reading--especially Golden Age science fiction and watching classic movies.

Schedule a visit with Dr. Walworth today by clicking on the Schedule Appointment button or call our office at (281) 356-1945 to reserve your slot at your ideal day and time. 

Andrew Martin, MSN, APRN, FNP-C, is a board-certified family nurse practitioner at Southern Secrets Med Spa and Clinic in Conroe, Texas. He takes a integrative approach to healing that avoids overreliance on pharmaceuticals.

Andrew earned an associate’s degree at the Lower Columbia College, College of Nursing in Longview, Washington, before completing his Bachelor of Science in nursing with honors at the University of Texas College of Nursing in Arlington. He fulfilled a master’s degree and post-graduate program at the University of Texas Health Science Center in Houston to earn the family nurse practitioner credentials and certification in emergency and trauma. 

Before joining Southern Secrets Med Spa and Clinic, Andrew worked as an emergency center staff nurse in the busiest Level III trauma center in Texas and as a charge nurse in a chemical detox unit. He is a member of the American Academy of Emergency Nurse Practitioners, the American Association of Nurse Practitioners, and the Sigma Theta Tau.

When he’s not at work, Andrew enjoys spending time with his wife and four children. He likes being outdoors, hiking, hunting, fishing, and hopes to obtain his pilot’s license someday.

Ruby Samuel John, MD, is a board-certified internal medicine physician dedicated to providing compassionate, patient-centered care. She provides expert care to patients at Magnolia Family Medicine in Magnolia, Texas.

Dr. John earned her medical degree from Windsor University School of Medicine in 2005 and completed her residency at Rutgers NJ Medical School in Newark, where she was honored with the Most Humanistic Award in 2009. She went on to serve as Chief Resident and later as an Assistant Clinical Professor at University Hospital until 2011.

Dr. John devoted ten years to the Primary Care Clinic of North Texas, a non-profit organization serving the uninsured. Her commitment to underserved populations was recognized at the Lone Star Cares Fundraising Gala, where she received the Care and Compassion Award in 2014.

Dr. John’s philosophy of care emphasizes listening, trust, and prevention. She believes that effective medicine begins with understanding the whole patient, not just treating symptoms. By encouraging healthy lifestyle choices and focusing on preventive care, she helps her patients reduce the risk of both acute and chronic illness while improving overall wellness.

Outside of her practice, Dr. John enjoys spending time with her husband and their three active boys. She can often be found running outdoors or serving her local church community.

Ashley Cook, WHNP-BC, is a highly trained Women's Health Nurse Practitioner at Woodlands Aesthetics in The Woodlands, Texas. She has almost two decades of experience and specializes in an array of women’s services.

Ashley began her career in health care as a registered nurse after earning her bachelor’s degree in nursing from The University of Texas Medical Branch (UTMB Health) in Galveston, Texas. She continued her education by receiving a master’s degree in nursing at the UT Health Science Center in Houston. 

She spent five years working as a registered nurse at The Woodlands Hospital Family Birth Center in The Woodlands, Texas, before moving to the Memorial Hermann The Woodlands Medical Center. Ashley then joined Dr. Jon M. R. Rawson, MD, PhD, at Woodlands OB-GYN Specialists, where she specialized in obstetrics, gynecology, and fertility. 

In 2017, Ashley established Woodlands Aesthetics with Dr. Jon M R Rawson, MD, PhD, a fully functional aesthetic medical spa in The Woodlands. 

She provides ongoing comprehensive care to her patients, offering them exceptional anti-aging treatments. Examples include laser skincare, neuromodulators, dermal fillers, vein treatments, laser hair removal, skin tightening, vaginal revitalization, and much more.

Ashely enjoys helping her patients achieve dramatic anti-aging results, smoother skin, and better body contours without pain, surgery, or downtime. She compassionately welcomes them to Woodlands Aesthetics.