Thomas C. Greenough, M.D.
Infectious Disease Physician · Worcester, MA
Thomas C. Greenough, M.D. is an infectious disease physician with a practice address in Worcester, Massachusetts, and NPI 1184607665, issued on Nov 29, 2005. Check the license (Massachusetts 77419, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Thomas C. Greenough
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- 77419 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Lake Ave N, Worcester, MA 01655
- Phone
- (774) 441-8230
- Enumerated
- Nov 29, 2005
- Record last updated
- Jan 15, 2026
- Fax
- (508) 334-3428
- Medicaid ID
- 110052966A MA
- Medicare enrollment
- Enrolled (PECOS I20050602000040); accepts Medicare assignment
- Medical or professional school
- University Of Rochester School Of Medicine And Dentistry, 1987
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 487 in Massachusetts → Look up another NPI →
Also registered at 55 Lake Ave N
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nawal Aamir, MDInternal Medicine Physician1588248926
- Amarys Abadie, CRNACertified Registered Nurse Anesthetist1992936843
- Paula Abate, NPNurse Practitioner1336265909
- Aly AbayazeedDiagnostic Radiology Physician1821221946
- Zainab AbbasDermatology Physician1609028000
- Mary-Alice Abbott, MDClinical Genetics (M.D.) Physician1982799417
Verify Thomas C. Greenough in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 77419Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% more Medicare Part D claims than the average infectious disease physician in 2024
966 Medicare Part D claims for 50 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 51% of claims.
Most prescribed
- Tivicay113 claims
- Biktarvy85 claims
- Triumeq63 claims
- Descovy58 claims
- Ketoconazole47 claims
- Prezcobix38 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.
The MIPS final score for 2023 (Medicare payment program): 97 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).
Industry payments in 2024: $20,220.93
2 payments; by number, the most common kind was consulting fee; the largest payer was Gilead Sciences, Inc. The 3,895 providers of this specialty with any payment received $4,362.19 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
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).
Thomas C. Greenough among 487 infectious disease physician records in Massachusetts
Thomas C. Greenough, M.D. is one of 487 infectious disease physician records with a practice address in Massachusetts. 69% 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, 83% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1987 · median 2003 among the 296 with a school on file
- Record last updated2026 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Massachusetts
There are 487 infectious disease physician records in Massachusetts.
All 487 in Massachusetts → Every provider in Worcester → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Neil Blacklow, M.D.Worcester, MA 016551982686028
- Sarah Cheeseman, M.D.Worcester, MA 016551538142112
- Laura Gibson, M.D.Worcester, MA 016551801877535
- Richard Glew, M.D.Worcester, MA 016551063495547
- Douglas Golenbock, M.D.Worcester, MA 016551467435917
- Stuart Levitz, M.D.Worcester, MA 016551982681615
- Daniel Libraty, M.D.Worcester, MA 016551255314100
- Brian Mady, M.D.Worcester, MA 016551346224615
Common questions
What is Thomas C. Greenough, M.D.'s NPI number?
Thomas C. Greenough, M.D.'s National Provider Identifier (NPI) is 1184607665, issued on Nov 29, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Thomas C. Greenough, M.D. located?
The NPPES record lists a practice address at 55 Lake Ave N, Worcester, MA, 01655. Phone: (774) 441-8230. Providers update this record themselves, so call before visiting.
How can I verify Thomas C. Greenough, M.D.'s license?
NPPES lists Massachusetts license number 77419, 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 Thomas C. Greenough, M.D. prescribe under Medicare Part D?
In 2024, Thomas C. Greenough, M.D. had 966 Medicare Part D claims for 50 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is Thomas C. Greenough, M.D.'s MIPS final score?
The 2023 MIPS final score is 97 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.