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

Mr. John M Callahan, MD

Individual provider Internal Medicine Physician · NPI 1568454528

Mr. John M Callahan, MD is an Internal Medicine in Syracuse, New York. Graduated from State University of Ny Upstate Medical University in 1986, 40 years ago. Practices with Physician Mobile Medical Care PC, a 93-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
40
Trained at
State University of Ny Upstate Medical University
Licensed in
NY
In the registry since
2005
Specialties on file
2
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

301 Prospect Ave Hospital Internists
Syracuse, NY 13203-1807
Phone: (315) 448-5704
Fax: (315) 423-6853
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 208546 (NY)
Internal Medicine Physician Taxonomy 207R00000X · Licence 208546 (NY)

Record details

NPI number1568454528
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 16, 2005
Last updated in NPPESApril 8, 2013
Mailing address301 Prospect Ave, Hospital Internists, Syracuse, NY 13203-1807

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesHOSPITALIST
Medical schoolSTATE UNIVERSITY OF NY UPSTATE MEDICAL UNIVERSITY
Graduated 1986 (40 years in practice)
Group practice Physician Mobile Medical Care Pc — 93 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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