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. New York, NY
  11. Orlando, FL
  12. Philadelphia, PA
  13. Phoenix, AZ
  14. Riverside, CA
  15. San Antonio, TX
  16. San Diego, CA
  17. San Francisco, CA
  18. Seattle, WA
  19. St. Louis, MO
  20. Tampa, FL
  21. 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. 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. St. Louis, MO
  22. Tampa, FL
  23. 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. 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

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. Charlotte, NC
  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 Diego, CA
  18. San Francisco, CA
  19. St. Louis, MO
  20. Tampa, FL
  21. 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. 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

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
Melissa Callahan, CRNP, Nurse Practitioner

Melissa Callahan, CRNP

Nurse Practitioner

320 Exton Commons
Exton, PA 19341

Overall rating

Top reviews

Dr. Melissa is an AMAZING doctor and an even better human being! She takes her time with you and you never feel rushed. Her office is a safe place and I am so grateful I found her. She has helped change my life!

Valerie R • October 21, 2025

Incredible care and super professional. I actually enjoy visiting her, and I rarely feel that with doctors, health professionals, etc. Very thankful for Melissa.

Scott P • October 01, 2025

Read more reviews
calendar icon

Online appointment booking not available at this location.

Got questions for
Melissa Callahan, CRNP?


About Melissa Callahan, CRNP

I have over 20 years of experience in Adult and Geriatric Primary Care with a specialty in Addiction medicine and Behavioral Health medication management. I specialize in outpatient medication assisted treatment(MAT) with expertise managing Sublocade and Vivitrol. I also focus on diagnosis and treatment of hepatitis C.

Services, Conditions and Procedures

HCV

MAT

Sublocade

Substance Use Disorders


Location

Specialty Medical Care Services

320 Exton Commons
Exton, PA, 19341


More About Melissa Callahan, CRNP

Practice

Specialty Medical Care Services

Specialties

  • Nurse Practitioner

Insurance

  • Aetna
  • AmeriHealth Caritas PA
  • Gateway Health Plan
  • Highmark
  • United HealthCare

NPI Number

1669411393

Provider's Gender

Female


Background and Education

Years practicing

21.0 years

Education

  • University of Pennsylvania, 1999

Associations

  • AAAP
  • ANA
  • ANCC
  • ASAM

Awards

  • GENESIS GERONTOLOGICAL NURSE PRACTITIONER SCHOLARSHIP
  • CARON TREATMENT CENTER GREATER PHILADELPHIA HEALTHCARE PROFESSIONAL OF THE YEAR AWARD
  • CARON TREATMENT CENTER GREATER PHILADELPHIA HEALTHCARE PROFESSIONAL OF THE YEAR AWARD

Reviews

5.0
56 Reviews

Kathleen P • November 12, 2025

As always, fantastic care. Melissa is the best of the best

Scott P • October 29, 2025

Dr. Melissa is an AMAZING doctor and an even better human being! She takes her time with you and you never feel rushed. Her office is a safe place and I am so grateful I found her. She has helped change my life!

Valerie R • October 21, 2025

Debbie K • October 13, 2025

Incredible care and super professional. I actually enjoy visiting her, and I rarely feel that with doctors, health professionals, etc. Very thankful for Melissa.

Scott P • October 01, 2025

Absolutely loved Melissa. She is so personable. She just kind of gets it. She reads between the lines. She picks up on shit that you don’t even have to say out loud. she’s fabulous love love love her.

Julie D • September 09, 2025

One word…Fantastic. As usual.

Scott P • August 19, 2025

Melissa is the most genuine and caring person I have ever had in the medical field. She provides comfort, but at the same time provides assurance that conditions will get better. I came away from my first appointment feeling much better and all subsequent visits have been no different. Melissa also listens very well to concerns and questions and provides thorough answers in layman terms. She is also true to her word and does what she says she will do (so refreshing) Thank you so much Melissa!

James P • August 14, 2025

*****

Michelle H • August 03, 2025

Best nurse practitioner I’ve ever met. Truly cares about her patients.

Abigail F • June 24, 2025

Wonderful nurse practitioner who truly cares about her patients.

Abigail F • May 01, 2025

Debbie K • March 20, 2025

James B • March 19, 2025

Nicholas S • March 14, 2025

Dr. Melissa is a miracle worker. She not only knows how to adjust your meds to the perfect amount, her bedside manner is impecable. I am lucky I was referred to her. She has done what no other could do in 15 years.

Mandee H • January 17, 2025

One of the best doctors to get the Subuclode shot or other meds

Nicholas M • November 13, 2024

Melissa is so thorough, caring and knowledgeable. She really takes her time, does not rush and explains everything. I highly recommend this practice.

Maureen H • November 06, 2024

Very professional. Easy to work with. 100% recommend

Edward T • October 01, 2024

Melissa is the best at what she does

Scott P • September 27, 2024

Benjamin O • September 13, 2024

One of the best…The doctor goes above and beyond for her patients. Dr. Callahan takes the time to listen to the patients and then give great advice. I would 100% suggest your meds.

Nicholas M • June 21, 2024

Melissa and her staff are the best. Melissa really listens and spends plenty of time for each visit.

Jennifer B • February 28, 2024

Melissa gets right to the point and helps me guide my way through my recovery.

Karl Z • October 24, 2023

Always appreciate seeing Melissa. She listens to every single concern as well as showing interest in what works best for me. I couldn’t ask for better care!!

Amy B • August 15, 2023

Melissa is great and very knowledgeable about everything and makes you feel very calm and relaxed! The lady in the office is great to and is great at checking in and making you feel comfortable

Brendan H • June 22, 2023

Finding Melissa was one of the best things that happened when I moved to the area. I absolutely do not mind driving 40 minutes to continue seeing her monthly. I always feel like I am important to her as a patient and listened to with any concerns I have. She is always honest and caring. Her advice is always valued.

Amy B • May 26, 2023

I felt comfortable telling Melissa everything about my journey with recovery and the option of medication from the very first visit. I can't recommend her practice enough!!

Thomas S • May 25, 2023

Amazing Dr. and Staff

Edward T • May 05, 2023

Melissa is extraordinary! I would recommend her to anyone.??

Jayleen C • April 26, 2023

Treats patients with kindness and respect. genuine concern. efficient AND quickly assisted in addressing an insurance issue. Would recommend them to anyone!

Mary M • March 31, 2023

View more reviews

Are you Melissa Callahan, CRNP?

Manage your profile to get more exposure and incoming appointments.