Gregory C. Malloy, M.D.
Physical Medicine & Rehabilitation Physician · Westborough, MA
Gregory C. Malloy, M.D. is a physical medicine & rehabilitation physician with a practice address in Westborough, Massachusetts, and NPI 1427164342, issued on Aug 22, 2006. Check the license (Massachusetts 77899, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Gregory C. Malloy
- Credential
- M.D.
- Primary taxonomy
- Physical Medicine & Rehabilitation Physician 208100000X
- License number
- 77899 MA
Self-reported in NPPES; status is on the state search - Practice location
- 150 Flanders RD, Westborough, MA 01581
- Phone
- (508) 870-2222
- Enumerated
- Aug 22, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20050525001235); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1989
- Entity
- Type 1 · individual
8 nearest physical medicine & rehabilitation physician records → All 353 in Massachusetts → Look up another NPI →
Also registered at 150 Flanders RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- William Hartzell, M.D.Pulmonary Disease Physician1417938986
- Michael Hoang, PHARMDPharmacist1770108250
- Jaroslaw Jac, MDHematology & Oncology Physician1326029802
- Samina Khan, MA, CCC-AAudiologist1619116308
- Jennifer Martin, MPTPhysical Therapist1487948766
Verify Gregory C. Malloy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 77899Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 0 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Gregory C. Malloy among 353 physical medicine & rehabilitation physician records in Massachusetts
Gregory C. Malloy, M.D. is one of 353 physical medicine & rehabilitation physician records with a practice address in Massachusetts. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 59% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1989 · median 2006 among the 209 with a school on file
- Record last updated2007 · 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 208100000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Physical Medicine & Rehabilitation Physician providers in Massachusetts
There are 353 physical medicine & rehabilitation physician records in Massachusetts.
All 353 in Massachusetts → Every provider in Westborough → Physical Medicine & Rehabilitation Physician nationwide →
The 8 physical medicine & rehabilitation physician records with the nearest ZIP codes
- John Vincent Turchetta, M.D.Westborough, MA 015811871540047
- Benjamin Gatlin, PT, DPTWest Boylston, MA 015831639847684
- Kristina Murray, PT, DPTSturbridge, MA 015661275170011
- Wiaam Ahmed, M.DWorcester, MA 016021750673299
- Ralph Brutus, MDWorcester, MA 016021073501557
- Daniel Tanenbaum, M.D.Worcester, MA 016021578502662
- Debra Twehous, M.D.Worcester, MA 016021750361150
- Lauren Woo, MDWorcester, MA 016021437689809
Common questions
What is Gregory C. Malloy, M.D.'s NPI number?
Gregory C. Malloy, M.D.'s National Provider Identifier (NPI) is 1427164342, issued on Aug 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory C. Malloy, M.D. located?
The NPPES record lists a practice address at 150 Flanders RD, Westborough, MA, 01581. Phone: (508) 870-2222. Providers update this record themselves, so call before visiting.
How can I verify Gregory C. Malloy, M.D.'s license?
NPPES lists Massachusetts license number 77899, 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.
What is Gregory C. Malloy, M.D.'s MIPS final score?
The 2023 MIPS final score is 0 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.