Donald B. Bloch, MD
Rheumatology Physician · Boston, MA
Donald B. Bloch, MD is a rheumatology physician with a practice address in Boston, Massachusetts, and NPI 1609857739, issued on Nov 7, 2005. Check the license (Massachusetts 552004, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Donald B. Bloch
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License numbers
- 552004 MA
55204 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fruit Street, Yawkey 2100, Boston, MA 02114
- Phone
- (617) 726-7938
- Enumerated
- Nov 7, 2005
- Record last updated
- Feb 11, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (617) 643-1274
- Medicaid ID
- 3113108 MA
- Medicare enrollment
- Enrolled (PECOS I20050517000845); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 1983
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 343 in Massachusetts → Look up another NPI →
Verify Donald B. Bloch in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 552004Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average rheumatology physician in 2024
108 Medicare Part D claims for 26 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D.
Most prescribed
- Enbrel Sureclick17 claims
- Hydroxychloroquine Sulfate15 claims
- Enbrel Mini12 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.
Bills Medicare through 2 group practices
- Massachusetts General Physicians Organization IncBoston, MA
- The General Hospital CorporationBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Donald B. Bloch among 343 rheumatology physician records in Massachusetts
Donald B. Bloch, MD is one of 343 rheumatology physician records with a practice address in Massachusetts. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 86% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1983 · median 2004 among the 212 with a school on file
- Record last updated2014 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Massachusetts
There are 343 rheumatology physician records in Massachusetts.
All 343 in Massachusetts → Every provider in Boston → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Syed Ahmed, M.D.Boston, MA 021141407829948
- Sheila Arvikar, M.D.Boston, MA 021141881721249
- Kurt Bloch, MDBoston, MA 021141326020652
- Marcy Bolster, MDBoston, MA 021141154439198
- Flavia Castelino, M.D.Boston, MA 021141962611301
- Robert Friday, MD PHDBoston, MA 021141053393074
- Nancy Kim, M.D.Boston, MA 021141669447090
- Minna Kohler, M.D.Boston, MA 021141518924711
Common questions
What is Donald B. Bloch, MD's NPI number?
Donald B. Bloch, MD's National Provider Identifier (NPI) is 1609857739, issued on Nov 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Donald B. Bloch, MD located?
The NPPES record lists a practice address at 55 Fruit Street, Yawkey 2100, Boston, MA, 02114. Phone: (617) 726-7938. Providers update this record themselves, so call before visiting.
How can I verify Donald B. Bloch, MD's license?
NPPES lists Massachusetts license number 552004, 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 Donald B. Bloch, MD prescribe under Medicare Part D?
In 2024, Donald B. Bloch, MD had 108 Medicare Part D claims for 26 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.