Mary M. Herlihy, M.D.
Obstetrics Physician · Worcester, MA
Mary M. Herlihy, M.D. is an obstetrics physician with a practice address in Worcester, Massachusetts, and NPI 1679564967, issued on Nov 4, 2005. Check the license (Massachusetts 156223, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mary M. Herlihy
- Credential
- M.D.
- Primary taxonomy
- Obstetrics Physician 207VX0000X
- License number
- 156223 MA
Self-reported in NPPES; status is on the state search - Practice location
- 119 Belmont St, Worcester, MA 01605
- Phone
- (508) 334-6255
- Enumerated
- Nov 4, 2005
- Record last updated
- Oct 26, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicaid ID
- 3183637 MA
- Medicare enrollment
- Enrolled (PECOS I20080326000676); accepts Medicare assignment
- Medical or professional school
- University Of Massachusetts Medical School, 1994
- Entity
- Type 1 · individual
8 nearest obstetrics physician records → All 25 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.
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- Yury Aleksandrovich, MDInternal Medicine Physician1912469388
Verify Mary M. Herlihy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 156223Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average obstetrics physician in 2024
23 Medicare Part D claims for 17 beneficiaries, against an average of 218 among the 863 providers of this specialty who prescribed in Part D.
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
- Beth Israel Deaconess Medical Center IncBoston, MA
- Harvard Medical Faculty Phys AT Beth Israel Deaconess Med Ctr IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary M. Herlihy among 25 obstetrics physician records in Massachusetts
Mary M. Herlihy, M.D. is one of 25 obstetrics physician records with a practice address in Massachusetts. 56% 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, 76% newer
- In a Medicare fileYes · 56% of these records are
- In the CMS Doctors and Clinicians fileYes · 48% of these records are
- Graduated1994 · median 2008 among the 12 with a school on file
- Record last updated2012 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VX0000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics Physician providers in Massachusetts
There are 25 obstetrics physician records in Massachusetts.
All 25 in Massachusetts → Every provider in Worcester → Obstetrics Physician nationwide →
The 8 obstetrics physician records with the nearest ZIP codes
- Patricia Aronson, M.D.Worcester, MA 016051710978085
- Debra Papa, M.D.Worcester, MA 016051053392019
- Edward Peskin, M.D.Worcester, MA 016051982685061
- Amir Mehdizadeh, M.D.Worcester, MA 016041073976932
- Robert DalessandroLeominster, MA 014531295967669
- Melanie Nathan, MDDanvers, MA 019231861655821
- Serena Rosa, WHNP, MPH, CLCDedham, MA 020261215413240
- Debra Disandro, M.D.Springfield, MA 011071043219397
Common questions
What is Mary M. Herlihy, M.D.'s NPI number?
Mary M. Herlihy, M.D.'s National Provider Identifier (NPI) is 1679564967, issued on Nov 4, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mary M. Herlihy, M.D. located?
The NPPES record lists a practice address at 119 Belmont St, Worcester, MA, 01605. Phone: (508) 334-6255. Providers update this record themselves, so call before visiting.
How can I verify Mary M. Herlihy, M.D.'s license?
NPPES lists Massachusetts license number 156223, 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 Mary M. Herlihy, M.D. prescribe under Medicare Part D?
In 2024, Mary M. Herlihy, M.D. had 23 Medicare Part D claims for 17 beneficiaries; the average among obstetrics physician prescribers was 218. 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.