NPPES file of Aug 9, 2026

Sandy Sharon Tsao, MD

Dermatology Physician · Boston, MA

Sandy Sharon Tsao, MD is a dermatology physician with a practice address in Boston, Massachusetts, and NPI 1942279740, issued on Mar 15, 2006. Check the license (Massachusetts 156422, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1942279740
Name
Sandy Sharon Tsao
Credential
MD
Primary taxonomy
Dermatology Physician 207N00000X
License number
156422 MA
Self-reported in NPPES; status is on the state search
Practice location
50 Staniford St, Boston, MA 02114
Phone
(617) 724-6960
Enumerated
Mar 15, 2006
Record last updated
Nov 5, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(617) 724-6970
Medicaid ID
3186211 MA
Medicare enrollment
Enrolled (PECOS I20091223000287); accepts Medicare assignment
Medical or professional school
Harvard Medical School, 1994
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 50 Staniford St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Mary Ahn, M.D.Child & Adolescent Psychiatry Physician1952429532
  2. Robert Amrhein, M.D.Specialist1972676781
  3. Richard Anderson, MDDermatology Physician1700869831
  4. Anjum Ansari, D.M.D.General Practice Dentistry1578783346
  5. Alison Avram, M.D.Dermatology Physician1083721781
  6. Mathew Avram, MDDermatology Physician1295717296

Verify Sandy Sharon Tsao in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 156422
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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79% fewer Medicare Part D claims than the average dermatology physician in 2024

165 Medicare Part D claims for 79 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.

  1. Sandy Tsao165
  2. Specialty average797

Most prescribed

  1. Ketoconazole25 claims
  2. Metronidazole21 claims
  3. Fluorouracil17 claims
  4. Clindamycin Phosphate13 claims
  5. Mometasone Furoate11 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

  1. Massachusetts General Physicians Organization IncBoston, MA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Sandy Sharon Tsao among 627 dermatology physician records in Massachusetts

Sandy Sharon Tsao, MD is one of 627 dermatology physician records with a practice address in Massachusetts. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.

  • NPI issued2006 · 11% of these records are older, 61% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated1994 · median 2008 among the 445 with a school on file
  • Record last updated2012 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Dermatology Physician providers in Massachusetts

There are 627 dermatology physician records in Massachusetts.

The 8 dermatology physician records with the nearest ZIP codes

  1. Richard Anderson, MDBoston, MA 021141700869831
  2. Mathew Avram, MDBoston, MA 021141295717296
  3. Howard Baden, MDBoston, MA 021141427048636
  4. Melissa Burnett, MDBoston, MA 021141407837818
  5. Ernesto Gonzalez-Martinez, MDBoston, MA 021141821070806
  6. Anita Grassi, MDBoston, MA 021141831189513
  7. Joannes Grevelink, MD PHDBoston, MA 021141538150982
  8. Joseph Kvedar, MDBoston, MA 021141043200223

Common questions

What is Sandy Sharon Tsao, MD's NPI number?

Sandy Sharon Tsao, MD's National Provider Identifier (NPI) is 1942279740, issued on Mar 15, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Sandy Sharon Tsao, MD located?

The NPPES record lists a practice address at 50 Staniford St, Boston, MA, 02114. Phone: (617) 724-6960. Providers update this record themselves, so call before visiting.

How can I verify Sandy Sharon Tsao, MD's license?

NPPES lists Massachusetts license number 156422, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Sandy Sharon Tsao, MD prescribe under Medicare Part D?

In 2024, Sandy Sharon Tsao, MD had 165 Medicare Part D claims for 79 beneficiaries; the average among dermatology physician prescribers was 797. 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.