John Christopher Lorenzo Trinidad, M.D., M.P.H
Dermatology · Boston, MA
At a glance
50 Staniford Street, Boston, MA 02114
Published activity: Melanoma (skin cancer) excision · Removal of skin lesions · Removal or shaving of skin growth. View counts and coverage
NPPES record updated Oct 4, 2022. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
50 Staniford Street Massachusetts General HospitalBoston, MA 02114
Additional reported practice locations
540 Officenter Pl240
Gahanna, OH 432305317
Phone: 6142931707 780 Albany St
Boston, MA 021182755
Phone: 8576541000
Fax: 8576541100
Education & affiliations
- Medical / professional school
- University Of California, San Francisco School Of Medicine
- Graduation year
- 2013
- CMS specialties
- Dermatology
Practice groups
Reported hospital affiliations
- Massachusetts General Hospital Boston, MA
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
| Procedure category | Published Medicare activity |
|---|---|
| Melanoma (skin cancer) excision | 1-10 |
| Removal of skin lesions | 611 |
| Removal or shaving of skin growth | 1-10 |
| Skin biopsy | 141 |
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $13.90 |
Reporting companies
| Company | Amount |
|---|---|
| AMGEN INC. | $13.90 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Dermatology
- Taxonomy code
- 207N00000X
- Enumeration date
- Aug 23, 2013
- Record updated
- Oct 4, 2022
More registry details
- Provider type
- Individual · Type 1
- Other reported name
- JOHN TRINIDAD
- Reported credentials
- M.D., M.P.H
Reported taxonomies and licenses
207N00000X
License reported: A132707 CA
207N00000X
License reported: 130999 OH
390200000X
207N00000X · Primary
License reported: 290956 MA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
50 Staniford StreetMassachusetts General Hospital
Boston, MA 02114
- Phone
- (617) 643-7972
Mailing address
50 STANIFORD STBOSTON, MA 021142517
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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