Rosemary Larkin Shay, MD
Maternal & Fetal Medicine Physician · Worcester, MA
Rosemary Larkin Shay, MD is a maternal & fetal medicine physician with a practice address in Worcester, Massachusetts, and NPI 1801392337, issued on Apr 3, 2018. Check the license (Massachusetts 1023545, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Rosemary Larkin Shay
- Credential
- MD
- Primary taxonomy
- Maternal & Fetal Medicine Physician 207VM0101X
- License number
- 1023545 MA
Self-reported in NPPES; status is on the state search - Practice location
- 33 Kendall St, Worcester, MA 01605
- Phone
- (508) 334-1345
- Enumerated
- Apr 3, 2018
- Record last updated
- Nov 10, 2025
- Fax
- (508) 334-9847
- Medicare enrollment
- Enrolled (PECOS I20250923001104); accepts Medicare assignment
- Medical or professional school
- University Of North Carolina At Chapel Hill School Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest maternal & fetal medicine physician records → All 92 in Massachusetts → Look up another NPI →
Also registered at 33 Kendall St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Allocco, M.D.Obstetrics & Gynecology Physician1114313517
- Joshua Altschuler, MDUrology Physician1003471962
- Armando Arroyo, MDReproductive Endocrinology Physician1538188420
- Philip Ayvazian, MDUrology Physician1487654984
- Courtney Barry, ADN, RNDoula1891519526
- Erin Bednarek, N.P.Women's Health Nurse Practitioner1003114794
Verify Rosemary Larkin Shay in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 1023545Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- 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).
Rosemary Larkin Shay among 92 maternal & fetal medicine physician records in Massachusetts
Rosemary Larkin Shay, 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 2018, is newer than 88% of them.
- NPI issued2018 · 88% of these records are older, 8% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 82% of these records are
- Graduated2018 · 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
- Benjamin Hamar, MDWorcester, MA 016051003897877
- Maureen Hamel, MDWorcester, MA 016051730475203
- Yael Hoffman Sage, MDWorcester, MA 016051669647525
- Katherine Johnson, MDWorcester, MA 016051134481880
Common questions
What is Rosemary Larkin Shay, MD's NPI number?
Rosemary Larkin Shay, MD's National Provider Identifier (NPI) is 1801392337, issued on Apr 3, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Rosemary Larkin Shay, MD located?
The NPPES record lists a practice address at 33 Kendall St, Worcester, MA, 01605. Phone: (508) 334-1345. Providers update this record themselves, so call before visiting.
How can I verify Rosemary Larkin Shay, MD's license?
NPPES lists Massachusetts license number 1023545, 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.
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.