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

Dr. John Christopher Lorenzo Trinidad, MD, MPH

Individual provider Dermatology Physician · NPI 1457785610

Dr. John Christopher Lorenzo Trinidad, MD, MPH practises Dermatology in Boston, Massachusetts. Graduated from University of California, San Francisco School of Medicine in 2013, 13 years ago. Practices with Boston Health Care for the Homeless Program, Inc, a 74-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in California, Massachusetts and Ohio.

Years since qualifying
13
Trained at
University of California, San Francisco School of Medicine
Licensed in
CA, MA, OH
In the registry since
2013
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
MPH — Master of Public Health
A graduate degree in population health.

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Practice location Address checks out

50 Staniford Street Massachusetts General Hospital
Boston, MA 02114
Phone: (617) 643-7972
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 780 Albany St, Boston, MA 02118-2755 — (857) 654-1000
  • 540 Officenter Pl, Gahanna, OH 43230-5317 — (614) 293-1707

Specialties & licences

Dermatology Physician (primary) Taxonomy 207N00000X · Licence 290956 (MA)
Dermatology Physician Taxonomy 207N00000X · Licence A132707 (CA)
Dermatology Physician Taxonomy 207N00000X · Licence 130999 (OH)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1457785610
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , MPH
Sole proprietorYes
NPI enumeratedAugust 23, 2013
Last updated in NPPESOctober 4, 2022
Certification dateOctober 4, 2022

Medicare enrollment

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

Medicare specialtyDERMATOLOGY
Medical schoolUNIVERSITY OF CALIFORNIA, SAN FRANCISCO SCHOOL OF MEDICINE
Graduated 2013 (13 years in practice)
Group practice Boston Health Care For The Homeless Program, Inc. — 74 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of skin lesions 645 times · 89th percentile
Skin biopsy 147 times · 81st percentile
Melanoma (skin cancer) excision 1–10 times
Removal or shaving of skin growth 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients559
Services billed 2,438 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $14 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Boston Health Care for the Homeless Program, Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 74 clinicians in the practice; 12 are shown here.

Other providers in Boston