Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Peter Chansky, MD

Individual provider Dermatology Physician · NPI 1356846588

Peter Chansky, MD practises Dermatology in San Francisco, California. Graduated from Perelman School of Med at the University of Pennsylvania in 2018, 8 years ago. Practices with Csi Medical Group, a 104-clinician group, works from 5 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
8
Trained at
Perelman School of Med at the University of Pennsylvania
Licensed in
CA
In the registry since
2018
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

3838 California St Rm 610
San Francisco, CA 94118-1508
Phone: (415) 387-8007
Fax: (415) 387-8008
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (4)

  • 1800 Sullivan Ave Rm 403, Daly City, CA 94015-2224 — (650) 994-3238
  • 45 Castro St Ste 332, San Francisco, CA 94114-1019 — (415) 861-2600
  • 2001 Union St Ste 520, San Francisco, CA 94123-4110 — (415) 922-3344
  • 2555 Ocean Ave Ste 203, San Francisco, CA 94132-1645 — (415) 921-3322

Specialties & licences

Dermatology Physician (primary) Taxonomy 207N00000X · Licence A178808 (CA)

Record details

NPI number1356846588
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 28, 2018
Last updated in NPPESMarch 8, 2024
Certification dateMarch 8, 2024

Medicare enrollment

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

Medicare specialtyDERMATOLOGY
Medical schoolPERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA
Graduated 2018 (8 years in practice)
Group practice Csi Medical Group — 104 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 673 times · 89th percentile
Skin biopsy 156 times · 81st percentile
Melanoma (skin cancer) excision 12 times · 66th percentile
Removal of nail tissue 1–10 times
Removal of tissue 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 patients236
Services billed 1,668 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.

Compensation for serving as faculty or as a speaker for a medical education program $8,664 2 payments
Food and Beverage $8,457 285 payments · a meal or drink at a meeting or visit, not a fee
Compensation for services other than consulting , including serving as faculty or as a speaker at a venue other than a continuing education program $4,899 2 payments
Consulting Fee $3,006 2 payments
Travel and Lodging $1,414 12 payments · travel or lodging paid or reimbursed, such as to attend a conference
Education $99 1 payment · educational material or training, 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. Those with a page here are linked.

Colleagues at Csi Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 104 clinicians in the practice; 12 are shown here.

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