Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Gerardo Trejo Jr., MD, MHS

Individual provider Family Medicine Physician · NPI 1932545423

Gerardo Trejo Jr., MD, MHS is registered under Family Practice in Norwalk, Connecticut. Qualified in 2013, 13 years ago. Practices with Westchester Medical Group, PC, a 410-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Connecticut and New York.

Years since qualifying
13
Licensed in
CT, NY
In the registry since
2013
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

542 Westport Ave
Norwalk, CT 06851-4431
Phone: (203) 845-4800
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1281 E Main St, Stamford, CT 06902-3544 — (203) 210-2875

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 65347 (CT)
Family Medicine Physician Taxonomy 207Q00000X · Licence 324744 (NY)

Record details

NPI number1932545423
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , MHS
Sole proprietorYes
NPI enumeratedMay 11, 2013
Last updated in NPPESFebruary 29, 2024
Certification dateOctober 10, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice Westchester Medical Group, P.C — 410 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients147
Services billed 681 a service is one billed item, such as a visit, a test or a procedure
Average patient age78

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Westchester Medical Group, PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 410 clinicians in the practice; 12 are shown here.

Other providers in Norwalk