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

John S Graham, MD

Individual provider Internal Medicine Physician · NPI 1336137538

John S Graham, MD is an Internal Medicine in Tucson, Arizona. Graduated from University of Pittsburgh School of Medicine in 1992, 34 years ago. Practices with Summit Medical Group Arizona LLC, a 153-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Arizona.

Years since qualifying
34
Trained at
University of Pittsburgh School of Medicine
Licensed in
AZ
In the registry since
2005
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

1669 W Ina Rd
Tucson, AZ 85704-1982
Phone: (520) 795-6183
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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 47141 (AZ)

Record details

NPI number1336137538
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 11, 2005
Last updated in NPPESMay 19, 2021
Certification dateMay 19, 2021

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF PITTSBURGH SCHOOL OF MEDICINE
Graduated 1992 (34 years in practice)
Group practice Summit Medical Group Arizona Llc — 153 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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