Cardiologists near you

Cardiologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.

  1. Atlanta, GA
  2. Baltimore, MD
  3. Chicago, IL
  4. Dallas, TX
  5. Denver, CO
  6. Detroit, MI
  7. Houston, TX
  8. Los Angeles, CA
  9. Miami, FL
  10. Minneapolis, MN
  11. New York, NY
  12. Orlando, FL
  13. Philadelphia, PA
  14. Phoenix, AZ
  15. Riverside, CA
  16. San Antonio, TX
  17. San Diego, CA
  18. San Francisco, CA
  19. Seattle, WA
  20. St. Louis, MO
  21. Tampa, FL
  22. Washington, DC

Chiropractors near you

Chiropractor providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.

  1. Atlanta, GA
  2. Baltimore, MD
  3. Boston, MA
  4. Charlotte, NC
  5. Chicago, IL
  6. Dallas, TX
  7. Denver, CO
  8. Detroit, MI
  9. Houston, TX
  10. Los Angeles, CA
  11. Miami, FL
  12. Minneapolis, MN
  13. New York, NY
  14. Orlando, FL
  15. Philadelphia, PA
  16. Phoenix, AZ
  17. Riverside, CA
  18. San Antonio, TX
  19. San Diego, CA
  20. San Francisco, CA
  21. Seattle, WA
  22. St. Louis, MO
  23. Tampa, FL
  24. Washington, DC

Dentists near you

Dentist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.

  1. Atlanta, GA
  2. Baltimore, MD
  3. Boston, MA
  4. Charlotte, NC
  5. Chicago, IL
  6. Dallas, TX
  7. Denver, CO
  8. Detroit, MI
  9. Houston, TX
  10. Los Angeles, CA
  11. Miami, FL
  12. Minneapolis, MN
  13. New York, NY
  14. Orlando, FL
  15. Philadelphia, PA
  16. Phoenix, AZ
  17. Riverside, CA
  18. San Antonio, TX
  19. San Diego, CA
  20. San Francisco, CA
  21. Seattle, WA
  22. St. Louis, MO
  23. Tampa, FL
  24. Washington, DC

Dermatologists near you

Dermatologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.

  1. Atlanta, GA
  2. Baltimore, MD
  3. Boston, MA
  4. Chicago, IL
  5. Dallas, TX
  6. Denver, CO
  7. Detroit, MI
  8. Houston, TX
  9. Los Angeles, CA
  10. Miami, FL
  11. Minneapolis, MN
  12. New York, NY
  13. Orlando, FL
  14. Philadelphia, PA
  15. Phoenix, AZ
  16. Riverside, CA
  17. San Antonio, TX
  18. San Diego, CA
  19. San Francisco, CA
  20. St. Louis, MO
  21. Tampa, FL
  22. Washington, DC

Family Physicians near you

Family Physician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.

  1. Atlanta, GA
  2. Baltimore, MD
  3. Boston, MA
  4. Charlotte, NC
  5. Chicago, IL
  6. Dallas, TX
  7. Denver, CO
  8. Detroit, MI
  9. Houston, TX
  10. Los Angeles, CA
  11. Miami, FL
  12. Minneapolis, MN
  13. New York, NY
  14. Orlando, FL
  15. Philadelphia, PA
  16. Phoenix, AZ
  17. Riverside, CA
  18. San Antonio, TX
  19. San Diego, CA
  20. San Francisco, CA
  21. Seattle, WA
  22. St. Louis, MO
  23. Tampa, FL
  24. Washington, DC

OB-GYNs near you

OB-GYN providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.

  1. Atlanta, GA
  2. Baltimore, MD
  3. Boston, MA
  4. Charlotte, NC
  5. Chicago, IL
  6. Dallas, TX
  7. Denver, CO
  8. Detroit, MI
  9. Houston, TX
  10. Los Angeles, CA
  11. Miami, FL
  12. Minneapolis, MN
  13. New York, NY
  14. Orlando, FL
  15. Philadelphia, PA
  16. Phoenix, AZ
  17. Riverside, CA
  18. San Antonio, TX
  19. San Diego, CA
  20. San Francisco, CA
  21. Seattle, WA
  22. St. Louis, MO
  23. Tampa, FL
  24. Washington, DC

Ophthalmologists near you

Ophthalmologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.

  1. Atlanta, GA
  2. Baltimore, MD
  3. Boston, MA
  4. Charlotte, NC
  5. Chicago, IL
  6. Dallas, TX
  7. Denver, CO
  8. Detroit, MI
  9. Houston, TX
  10. Los Angeles, CA
  11. Miami, FL
  12. Minneapolis, MN
  13. New York, NY
  14. Orlando, FL
  15. Philadelphia, PA
  16. Phoenix, AZ
  17. Riverside, CA
  18. San Diego, CA
  19. San Francisco, CA
  20. St. Louis, MO
  21. Tampa, FL
  22. Washington, DC

Orthopedic Surgeons near you

Orthopedic Surgeon providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.

  1. Atlanta, GA
  2. Baltimore, MD
  3. Boston, MA
  4. Charlotte, NC
  5. Chicago, IL
  6. Dallas, TX
  7. Denver, CO
  8. Detroit, MI
  9. Houston, TX
  10. Los Angeles, CA
  11. Miami, FL
  12. New York, NY
  13. Orlando, FL
  14. Philadelphia, PA
  15. Phoenix, AZ
  16. Riverside, CA
  17. San Antonio, TX
  18. San Diego, CA
  19. San Francisco, CA
  20. Seattle, WA
  21. St. Louis, MO
  22. Tampa, FL
  23. Washington, DC

Pediatricians near you

Pediatrician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.

  1. Atlanta, GA
  2. Baltimore, MD
  3. Boston, MA
  4. Charlotte, NC
  5. Chicago, IL
  6. Dallas, TX
  7. Denver, CO
  8. Detroit, MI
  9. Houston, TX
  10. Los Angeles, CA
  11. Miami, FL
  12. Minneapolis, MN
  13. New York, NY
  14. Orlando, FL
  15. Philadelphia, PA
  16. Phoenix, AZ
  17. Riverside, CA
  18. San Antonio, TX
  19. San Diego, CA
  20. San Francisco, CA
  21. Seattle, WA
  22. St. Louis, MO
  23. Tampa, FL
  24. Washington, DC

Physical Therapists near you

Physical Therapist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.

  1. Atlanta, GA
  2. Baltimore, MD
  3. Boston, MA
  4. Charlotte, NC
  5. Chicago, IL
  6. Dallas, TX
  7. Denver, CO
  8. Detroit, MI
  9. Houston, TX
  10. Los Angeles, CA
  11. Miami, FL
  12. Minneapolis, MN
  13. New York, NY
  14. Orlando, FL
  15. Philadelphia, PA
  16. Phoenix, AZ
  17. Riverside, CA
  18. San Antonio, TX
  19. San Diego, CA
  20. San Francisco, CA
  21. Seattle, WA
  22. St. Louis, MO
  23. Tampa, FL
  24. Washington, DC

Podiatrists near you

Podiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.

  1. Atlanta, GA
  2. Baltimore, MD
  3. Boston, MA
  4. Charlotte, NC
  5. Chicago, IL
  6. Dallas, TX
  7. Denver, CO
  8. Detroit, MI
  9. Houston, TX
  10. Los Angeles, CA
  11. Miami, FL
  12. Minneapolis, MN
  13. New York, NY
  14. Orlando, FL
  15. Philadelphia, PA
  16. Phoenix, AZ
  17. Riverside, CA
  18. San Antonio, TX
  19. San Diego, CA
  20. San Francisco, CA
  21. Seattle, WA
  22. St. Louis, MO
  23. Tampa, FL
  24. Washington, DC

Psychiatrists near you

Psychiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.

  1. Atlanta, GA
  2. Baltimore, MD
  3. Boston, MA
  4. Charlotte, NC
  5. Chicago, IL
  6. Dallas, TX
  7. Denver, CO
  8. Detroit, MI
  9. Houston, TX
  10. Los Angeles, CA
  11. Miami, FL
  12. Minneapolis, MN
  13. New York, NY
  14. Orlando, FL
  15. Philadelphia, PA
  16. Phoenix, AZ
  17. Riverside, CA
  18. San Antonio, TX
  19. San Diego, CA
  20. San Francisco, CA
  21. Seattle, WA
  22. St. Louis, MO
  23. Tampa, FL
  24. Washington, DC
Healthcare specialist

Dr. Dennis Kellar, MD

Pulmonologist

1340 Ryan Parkway
Algonquin, IL

Overall rating

Top reviews

Dr Keller is a rare practitioner who takes the time to actually listen, answer questions and explain to his patients. He does not sit at a computer as is so common these days. He coverses with you and makes eye contact. Very knowShow moreledgeable and instills immediate trust. As a retired Nurse Practitioner , who has dealt with physicians for over 40 years, I highly recommend him.for any Pulmonary issues.

Jo Ann S. • August 11, 2024

Dr Keller is a wonderful. I don’t even have worse express him. He was very thorough and even helped me with another medical issue. He is fantastic! also, the staff that helps him out. I forgot the medical assistance name, but shShow moree was great as well.

Jenyne K. • August 20, 2024

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Got questions for
Dr. Dennis Kellar, MD?


About Dr. Dennis Kellar, MD

Dennis Kellar, MD, is the owner and CEO of Northwest Pulmonary and Sleep Medicine in Algonquin, Illinois. He is a board-certified multispecialty physician, providing his patients with expert care. 

 

Some of his many areas of expertise include trauma/critical care, pulmonary diseases, sleep disorders, and complex long-term respiratory and ventilator care. 

 

Dr. Kellar has been serving the community for over 20 years. He received his bachelor’s degree in biology from the University of South Florida in Tampa, Florida, and his medical degree from Ross University School of Medicine. 

 

Dr. Kellar’s training includes an internal medicine residency at Cook County Hospital and completing pulmonary, critical care, and sleep medicine fellowship as a chief fellow at RUSH University Medical Center in Chicago, Illinois. 

 

Dr. Kellar has served as a clinical assistant professor of medicine at the University of Illinois College of Medicine Rockford in Rockford, Illinois. He is a veteran of the United States Army and served with the 101st airborne division. Dr. Kellar also holds numerous director positions, including medical director for several ventilator care and COVID-19 units in the northwest suburbs. 

 

He served as the previous director of respiratory therapy for Illinois and director of pulmonary sleep services for an extensive health system in Northern Illinois. Dr. Kellar has been published in numerous areas covering pulmonary and critical care and was appointed as a special investigator of the coroner’s office in Mchenry County.


Services, Conditions and Procedures

Sleep Studies

CPAP

Breathing Disorders

Chronic Bronchitis

Lung Disease

Chest X-Ray

Pneumonia

Sleep Apnea

Asthma

Pulmonary Disorders

Pulmonary Function Test

Sleep Medicine


Location

Northwest Pulmonary and Sleep Medicine

1340 Ryan Parkway
Algonquin, IL, 60102


More About Dr. Dennis Kellar, MD

Practice

Northwest Pulmonary and Sleep Medicine

Specialties

  • Pulmonologist

NPI Number

1679683866

Provider's Gender

Male


Reviews

4.9
343 Reviews

Dr Kellar is awesome, takes the time to discuss everything you need to know.

Roxanne B. • October 30, 2024

Always professional and puncutional

Steven P. • October 25, 2024

Dr Keller has empathy and truly cares about you.. he listens and takes time to explain..

Anna L. • September 20, 2024

Everyone was very pleasant and helpful and they realized they really didn't need to see me , So we all laughed, thanked them, and left.

Louise M. • September 18, 2024

Dr Keller is a wonderful. I don’t even have worse express him. He was very thorough and even helped me with another medical issue. He is fantastic! also, the staff that helps him out. I forgot the medical assistance name, but she was great as well.

Jenyne K. • August 20, 2024

Dr. Kellar listens to and answers all your questions thoroughly. Very nice man. Would highly recommend him.

Gary P. • August 17, 2024

Dr Keller is a rare practitioner who takes the time to actually listen, answer questions and explain to his patients. He does not sit at a computer as is so common these days. He coverses with you and makes eye contact. Very knowledgeable and instills immediate trust. As a retired Nurse Practitioner , who has dealt with physicians for over 40 years, I highly recommend him.for any Pulmonary issues.

Jo Ann S. • August 11, 2024

I love this practice. Always attentive and his care is superb.

Julia M. • July 30, 2024

Annual review. Dr. is easy to talk with.

Nancy Anne S. • July 29, 2024

Dr Keller is a great doctor. I have purchased Nicorette lozenges to help me quit smoking.

Joyce R. • July 17, 2024

Dr Kellar is very thorough. Listens intently to my questions. I never feel like he is in a hurry but cares about each of his patients.

Frederick N. • July 04, 2024

Main reason I have Dr.Kellar as my pulmonary specialist is that I have always trusted and admired his accuracy regarding decisions about my respiratory problems.He is also a good listener and very easy to talk to.Thank you Dr .Kellar.

Marion G. • July 01, 2024

Saved and extended my life. Changed my med. and saved me some money. I am 87 years old thanks in part to Dr. Kellar. Highly recommended by other Physicians also.

Gerald S. • June 29, 2024

Dr Keller spent time with me. Listened to all my questions and he cared. What a wonderful doctor! Highly recommend!

Susan D. • June 25, 2024

Excellent and knowledgeable. I feel fortunate that I am able to count him as my doctor. He spent a great deal of time with me. Highly recommend.

Janet H. • June 22, 2024

Dr. Kellar is the best. I recommend him to everyone.

Phillip K. • June 19, 2024

Great & caring doctor that listens to your concerns.

Pamela C. • June 18, 2024

Dr. Kellar and Amanda Law are both professional and personable. I always feel comfortable seeing them both. They both know my chart and ask the important questions. I wouldn't see anyone else. They are the best.

Kathryn S. • June 15, 2024

Dr. Kellar was very professional, personable and reassuring.

Deborah G. • June 14, 2024

Dr. Kellar is professional and made some minor changes to my c-pap machine to improve my sleep experience. Staff is pleasant and easy to work with.

Paul W. • June 13, 2024

Hes the best!!

Steven S. • June 13, 2024

Dr Keller and staff are extremely friendly and helpful. I’m treated like I’m important from the moment I walk in the door. Dr Keller speaks to me in terms I can understand and makes sure all my questions are answered before I leave. They have never made me feel like I need to hurry up. Thank you!

Tammy B. • June 06, 2024

Dr. Keller was read up on all my past information and test before he entered and was very through explaining everything to me and my choices. Never felt rushed and answered all my questions!

Carole G. • June 06, 2024

Yery complete and thorough.

Robert S. • June 06, 2024

The best!!

Sheree P. • May 29, 2024

My experience was straightforward and satisfactory.

Hersh S. • May 29, 2024

Dr.Kellar was amazing and so patient throughout the entire appointment.

Sohrab I. • May 27, 2024

Dr. Kellar and staff were very friendly, helpful and patient. They answered all my questions and concerns. When I got home, I told my husband that our primary care physician referred me to a an excellent physician and that I was very pleased.

Maureen L. • May 23, 2024

It was a great meeting. Dr. Keller made feel comfortable and did not make we nervous. I am happy I was referred to Dr. Keller.

Dale G. • May 22, 2024

The Doctor and the Nurse were very helpful and explained the testing and the results to me.

Timothy D. • May 22, 2024

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