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

Matthew Jonathan Spitzer, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1770743999

Matthew Jonathan Spitzer, MD is an Endocrinology in Greenfield, Massachusetts. Graduated from State University of New York Downstate Medical Center in 2007, 19 years ago. Practices with Valley Medical Group PC, a 106-clinician group, works from 4 locations, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
19
Trained at
State University of New York Downstate Medical Center
Licensed in
MA
In the registry since
2008
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

329 Conway St
Greenfield, MA 01301-1521
Phone: (413) 774-6301
Fax: (866) 644-0871
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 31 Hall Dr, Amherst, MA 01002-2751 — (413) 256-8561
  • 238 Northampton St, Easthampton, MA 01027-1046 — (413) 529-9300
  • 70 Main St, Florence, MA 01062 — (413) 586-8400

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence 249715 (MA)

Record details

NPI number1770743999
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 11, 2008
Last updated in NPPESMarch 27, 2024
Certification dateMarch 27, 2024
Mailing address329 Conway St, Greenfield, MA 01301-1521

Medicare enrollment

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

Medicare specialtyENDOCRINOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolSTATE UNIVERSITY OF NEW YORK DOWNSTATE MEDICAL CENTER
Graduated 2007 (19 years in practice)
Group practice Valley Medical Group Pc — 106 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

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