Gerardo Trejo, M.D., M.H.S.
Family Medicine Physician · Norwalk, CT
Gerardo Trejo, M.D., M.H.S. is a family medicine physician with a practice address in Norwalk, Connecticut, and NPI 1932545423, issued on May 11, 2013. Check the license (Connecticut 65347, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Gerardo Trejo
- Credential
- M.D., M.H.S.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 65347 CT
324744 NY
Self-reported in NPPES; status is on the state search - Practice location
- 542 Westport Ave, Norwalk, CT 06851
- Phone
- (203) 845-4800
- Enumerated
- May 11, 2013
- Record last updated
- Feb 29, 2024
- Medicare enrollment
- Enrolled (PECOS I20230906001164); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 958 in Connecticut → Look up another NPI →
Also registered at 542 Westport Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Behnoud Baradaran Noveiry, MDNephrology Physician1699272625
Verify Gerardo Trejo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 65347Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average family medicine physician in 2024
1,193 Medicare Part D claims for 231 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Most prescribed
- Amlodipine Besylate55 claims
- Escitalopram Oxalate41 claims
- Atorvastatin Calcium40 claims
- Valsartan40 claims
- Lisinopril38 claims
- Pantoprazole Sodium36 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
- Westchester Medical Group, P.CNorwalk, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gerardo Trejo among 958 family medicine physician records in Connecticut
Gerardo Trejo, M.D., M.H.S. is one of 958 family medicine physician records with a practice address in Connecticut. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 65% of them.
- NPI issued2013 · 65% of these records are older, 33% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2013 · median 2009 among the 611 with a school on file
- Record last updated2024 · 56% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
24 family medicine physician records list a practice address in Norwalk
They are 24 of the 1,993 NPPES records with a practice address in Norwalk, and 958 family medicine physician records in Connecticut.
All 958 in Connecticut → Every provider in Norwalk → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Stella Arbitman, M.D., CCFPNorwalk, CT 068511467726141
- Trinity BelgraveNorwalk, CT 068511730863481
- Timothy Bookas, D.O.Norwalk, CT 068511750489464
- Abdul Choudhary, MDNorwalk, CT 068511750962221
- Joanna Fabris, M.D.Norwalk, CT 068511184148744
- Enitare Ogula, MDNorwalk, CT 068511548964786
- Bharat Patel, MDNorwalk, CT 068511093906174
- John Svogun, M.D.Norwalk, CT 068511487764445
Common questions
What is Gerardo Trejo, M.D., M.H.S.'s NPI number?
Gerardo Trejo, M.D., M.H.S.'s National Provider Identifier (NPI) is 1932545423, issued on May 11, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Gerardo Trejo, M.D., M.H.S. located?
The NPPES record lists a practice address at 542 Westport Ave, Norwalk, CT, 06851. Phone: (203) 845-4800. Providers update this record themselves, so call before visiting.
How can I verify Gerardo Trejo, M.D., M.H.S.'s license?
NPPES lists Connecticut license number 65347, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gerardo Trejo, M.D., M.H.S. prescribe under Medicare Part D?
In 2024, Gerardo Trejo, M.D., M.H.S. had 1,193 Medicare Part D claims for 231 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.