Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

John F Ryan, MD

Individual provider Internal Medicine Physician · NPI 1144266974

John F Ryan, MD is an Internal Medicine in Lake Mary, Florida. Graduated from State University of New York Downstate Medical Center in 1977, 49 years ago. Practices with Ability Health Services, Inc, a 1,232-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Florida.

Years since qualifying
49
Trained at
State University of New York Downstate Medical Center
Licensed in
FL
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

4106 W Lake Mary Blvd Ste 301
Lake Mary, FL 32746-3344
Phone: (407) 333-2503
Fax: (407) 333-0962
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence ME44570 (FL)

Record details

NPI number1144266974
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 21, 2006
Last updated in NPPESNovember 14, 2025
Certification dateNovember 14, 2025
Mailing address4106 W Lake Mary Blvd Ste 301, Lake Mary, FL 32746-3344

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolSTATE UNIVERSITY OF NEW YORK DOWNSTATE MEDICAL CENTER
Graduated 1977 (49 years in practice)
Group practice Ability Health Services, Inc — 1232 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

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