Matthew Jonathan Spitzer, MD
Endocrinology, Diabetes & Metabolism Physician · Greenfield, MA
Matthew Jonathan Spitzer, MD is an endocrinology, diabetes & metabolism physician with a practice address in Greenfield, Massachusetts, and NPI 1770743999, issued on Jun 11, 2008. Check the license (Massachusetts 249715, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Matthew Jonathan Spitzer
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 249715 MA
Self-reported in NPPES; status is on the state search - Practice location
- 329 Conway St, Greenfield, MA 01301
- Phone
- (413) 774-6301
- Enumerated
- Jun 11, 2008
- Record last updated
- Mar 27, 2024
- Fax
- (866) 644-0871
- Medicaid ID
- 110096042A MA
- Medicare enrollment
- Enrolled (PECOS I20130716000337); accepts Medicare assignment
- Medical or professional school
- State University Of New York Downstate Medical Center, 2007
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 522 in Massachusetts → Look up another NPI →
Also registered at 329 Conway St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mark Allen, M.D.Family Medicine Physician1285633198
- John Anderson, ED.D.Clinical Psychologist1871678136
- Lisa Appleton, NPNurse Practitioner1831219609
- Marie Bartlett, MSWClinical Social Worker1790815306
- Barbara Berthiaume, APRNFamily Nurse Practitioner1053736629
- Jessica Biggie, MDFamily Medicine Physician1689649584
Verify Matthew Jonathan Spitzer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 249715Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% more Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
5,017 Medicare Part D claims for 542 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of claims.
Most prescribed
- Levothyroxine Sodium545 claims
- Ozempic231 claims
- Nano 2nd Gen Pen Needle193 claims
- Jardiance182 claims
- Mounjaro171 claims
- Atorvastatin Calcium149 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $100.95
1 payment: food and beverage; the largest payer was Dexcom, Inc. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Valley Medical Group PCEasthampton, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew Jonathan Spitzer among 522 endocrinology, diabetes & metabolism physician records in Massachusetts
Matthew Jonathan Spitzer, MD is one of 522 endocrinology, diabetes & metabolism physician records with a practice address in Massachusetts. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 60% of them.
- NPI issued2008 · 60% of these records are older, 34% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2007 · median 2002 among the 378 with a school on file
- Record last updated2024 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Massachusetts
There are 522 endocrinology, diabetes & metabolism physician records in Massachusetts.
All 522 in Massachusetts → Every provider in Greenfield → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Margaret Ferry, MDGreenfield, MA 013011457454894
- Yeset Cervelo Fernandez, MDSpringfiel, MA 012011902434541
- Brian PhillipsPittsfield, MA 012011083831374
- Zaighum Rana, M.D.Pittsfield, MA 012011215257357
- Donny Chang, M.D., PH.D.Leominster, MA 014531114188265
- Warren Thau, M.D.Springfield, MA 011181609839661
- Barrett Chapin, MDSpringfield, MA 011071629009493
- Michele Gortakowski, M.D.Springfield, MA 011071710243621
Common questions
What is Matthew Jonathan Spitzer, MD's NPI number?
Matthew Jonathan Spitzer, MD's National Provider Identifier (NPI) is 1770743999, issued on Jun 11, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Jonathan Spitzer, MD located?
The NPPES record lists a practice address at 329 Conway St, Greenfield, MA, 01301. Phone: (413) 774-6301. Providers update this record themselves, so call before visiting.
How can I verify Matthew Jonathan Spitzer, MD's license?
NPPES lists Massachusetts license number 249715, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Matthew Jonathan Spitzer, MD prescribe under Medicare Part D?
In 2024, Matthew Jonathan Spitzer, MD had 5,017 Medicare Part D claims for 542 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.