Catherine Thu Thao Trinh, MD
Family Medicine Physician · Westford, MA
Catherine Thu Thao Trinh, MD is a family medicine physician with a practice address in Westford, Massachusetts, and NPI 1093963407, issued on Aug 28, 2008. Check the license (Massachusetts 257550, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Catherine Thu Thao Trinh
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 257550 MA
26505 NE
Self-reported in NPPES; status is on the state search - Practice location
- 198 Littleton RD, Westford, MA 01886
- Phone
- (978) 323-0312
- Enumerated
- Aug 28, 2008
- Record last updated
- Apr 4, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (978) 323-0344
- Medicare enrollment
- Enrolled (PECOS I20140321001572); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,265 in Massachusetts → Look up another NPI →
Also registered at 198 Littleton RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christen Fragala, M.D.Family Medicine Physician1073570024
- Sherine Hassey, NPFamily Nurse Practitioner1003047473
- Chanliny Lim, FNP-BCFamily Nurse Practitioner1780383208
- Le Santha Naidoo, D.OFamily Medicine Physician1144512179
- Berryzad Ramadan, M.D.Pediatrics Physician1396724449
Verify Catherine Thu Thao Trinh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 257550Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% more Medicare Part D claims than the average family medicine physician in 2024
4,280 Medicare Part D claims for 269 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 312 claims were for opioids.
Most prescribed
- Oxycodone Hcl222 claims
- Atorvastatin Calcium212 claims
- Lisinopril197 claims
- Amlodipine Besylate142 claims
- Levothyroxine Sodium131 claims
- Albuterol Sulfate Hfa115 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 one group practice
- Lgh Medical Group, Inc.Westford, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine Thu Thao Trinh among 2,265 family medicine physician records in Massachusetts
Catherine Thu Thao Trinh, MD is one of 2,265 family medicine physician records with a practice address in Massachusetts. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 53% of them.
- NPI issued2008 · 53% of these records are older, 42% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2008 · median 2006 among the 1,529 with a school on file
- Record last updated2017 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 family medicine physician records list a practice address in Westford
They are 10 of the 349 NPPES records with a practice address in Westford, and 2,265 family medicine physician records in Massachusetts.
All 2,265 in Massachusetts → Every provider in Westford → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Christen Fragala, M.D.Westford, MA 018861073570024
- Stephan Goupil, D.O., PH.D.Westford, MA 018861659767986
- Truong Huynh, M.D.Westford, MA 018861861449126
- Ana Jacobellis, D.O.Westford, MA 018861871753996
- Amy Lee, M.D.Westford, MA 018861952369878
- Kristen McCarthy, D.O.Westford, MA 018861457588162
- Le Santha Naidoo, D.OWestford, MA 018861144512179
- Sangita PillaiWestford, MA 018861588977375
Common questions
What is Catherine Thu Thao Trinh, MD's NPI number?
Catherine Thu Thao Trinh, MD's National Provider Identifier (NPI) is 1093963407, issued on Aug 28, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Thu Thao Trinh, MD located?
The NPPES record lists a practice address at 198 Littleton RD, Westford, MA, 01886. Phone: (978) 323-0312. Providers update this record themselves, so call before visiting.
How can I verify Catherine Thu Thao Trinh, MD's license?
NPPES lists Massachusetts license number 257550, 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 Catherine Thu Thao Trinh, MD prescribe under Medicare Part D?
In 2024, Catherine Thu Thao Trinh, MD had 4,280 Medicare Part D claims for 269 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.