Benjamin D. Hamar, MD
Maternal & Fetal Medicine Physician · Worcester, MA
Benjamin D. Hamar, MD is a maternal & fetal medicine physician with a practice address in Worcester, Massachusetts, and NPI 1003897877, issued on Nov 9, 2005. Check the license (Massachusetts 227040, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Benjamin D. Hamar
- Credential
- MD
- Primary taxonomy
- Maternal & Fetal Medicine Physician 207VM0101X
- License number
- 227040 MA
Self-reported in NPPES; status is on the state search - Practice location
- 119 Belmont St, Worcester, MA 01605
- Phone
- (508) 334-0550
- Enumerated
- Nov 9, 2005
- Record last updated
- Mar 6, 2025
- Fax
- (508) 334-8412
- Medicaid ID
- 110073416A MA
- Medicare enrollment
- Enrolled (PECOS I20060816000365); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 1999
- Entity
- Type 1 · individual
8 nearest maternal & fetal medicine physician records → All 92 in Massachusetts → Look up another NPI →
Also registered at 119 Belmont St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elisa Abdulhayoglu, MDNeonatal-Perinatal Medicine Physician1053346007
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- Redwan Ahmed, MDFamily Medicine Physician1356830103
- Hashim Al-Ani, MDInternal Medicine Physician1235863358
- Muhammad Albanna, MDInternal Medicine Physician1194404681
- Yury Aleksandrovich, MDInternal Medicine Physician1912469388
Verify Benjamin D. Hamar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 227040Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average maternal & fetal medicine physician in 2024
13 Medicare Part D claims, against an average of 41 among the 353 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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
- Reliant Medical Group IncWorcester, MA
- Umass Memorial Medical Group IncWorcester, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Benjamin D. Hamar among 92 maternal & fetal medicine physician records in Massachusetts
Benjamin D. Hamar, MD is one of 92 maternal & fetal medicine physician records with a practice address in Massachusetts. 89% 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, 84% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 82% of these records are
- Graduated1999 · median 2005 among the 75 with a school on file
- Record last updated2025 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VM0101X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Maternal & Fetal Medicine Physician providers in Massachusetts
There are 92 maternal & fetal medicine physician records in Massachusetts.
All 92 in Massachusetts → Every provider in Worcester → Maternal & Fetal Medicine Physician nationwide →
The 8 maternal & fetal medicine physician records with the nearest ZIP codes
- Petra Belady, M.D.Worcester, MA 016051467485482
- Ellen Delpapa, M.D.Worcester, MA 016051093706202
- Tina Dumont, MD, PHDWorcester, MA 016051902032550
- Karen Green, M.D.Worcester, MA 016051770564726
- Maureen Hamel, MDWorcester, MA 016051730475203
- Yael Hoffman Sage, MDWorcester, MA 016051669647525
- Katherine Johnson, MDWorcester, MA 016051134481880
- David Kanter, M.D.Worcester, MA 016051073781498
Common questions
What is Benjamin D. Hamar, MD's NPI number?
Benjamin D. Hamar, MD's National Provider Identifier (NPI) is 1003897877, issued on Nov 9, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Benjamin D. Hamar, MD located?
The NPPES record lists a practice address at 119 Belmont St, Worcester, MA, 01605. Phone: (508) 334-0550. Providers update this record themselves, so call before visiting.
How can I verify Benjamin D. Hamar, MD's license?
NPPES lists Massachusetts license number 227040, 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 Benjamin D. Hamar, MD prescribe under Medicare Part D?
In 2024, Benjamin D. Hamar, MD had 13 Medicare Part D claims; the average among maternal & fetal medicine physician prescribers was 41. 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.