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

Dr. Christopher Massari, MD

Individual provider Internal Medicine Physician · NPI 1700948973

Dr. Christopher Massari, MD is a Hospitalist in Oswego, New York. Graduated from University of Vermont College of Medicine in 2002, 24 years ago. Practices with Oswego Hospital, a 59-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in New York and Oregon.

Years since qualifying
24
Trained at
University of Vermont College of Medicine
Licensed in
NY, OR
In the registry since
2006
Specialties on file
3
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

110 W 6th St
Oswego, NY 13126-2598
Phone: (315) 349-5511
Fax: (315) 349-5785
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 1501 Ne Medical Center Dr, Bend, OR 97701-6051 — (541) 382-2811
  • 2500 Ne Neff Road, Bend, OR 97701 — (541) 706-5811

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 336551 (NY)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD28579 (OR)
Hospitalist Physician Taxonomy 208M00000X · Licence MD28579 (OR)

Record details

NPI number1700948973
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 14, 2006
Last updated in NPPESJune 19, 2025
Certification dateJune 19, 2025
Mailing address110 W 6th St, Oswego, NY 13126-2598

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Medical schoolUNIVERSITY OF VERMONT COLLEGE OF MEDICINE
Graduated 2002 (24 years in practice)
Group practice Oswego Hospital — 59 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Oswego