Yiyin Erin Chen, MD, PHD
Dermatology Physician · Boston, MA
Yiyin Erin Chen, MD, PHD is a dermatology physician with a practice address in Boston, Massachusetts, and NPI 1457799439, issued on Jun 12, 2013. Check the license (Massachusetts A134773, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Yiyin Erin Chen
- Credential
- MD, PHD
- Primary taxonomy
- Dermatology Physician 207N00000X
- License numbers
- A134773 MA
A134773 CA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fruit St, Bul-2, Boston, MA 02114
- Phone
- (864) 380-9034
- Enumerated
- Jun 12, 2013
- Record last updated
- Apr 17, 2023
- Medicare enrollment
- Enrolled (PECOS I20230510001757); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 2013
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 627 in Massachusetts → Look up another NPI →
Verify Yiyin Erin Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license A134773Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average dermatology physician in 2024
167 Medicare Part D claims for 62 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.
Most prescribed
- Ketoconazole27 claims
- Triamcinolone Acetonide23 claims
- Permethrin13 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
- 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).
Yiyin Erin Chen among 627 dermatology physician records in Massachusetts
Yiyin Erin Chen, MD, PHD 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 2013, is newer than 63% of them.
- NPI issued2013 · 63% of these records are older, 33% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2013 · median 2008 among the 445 with a school on file
- Record last updated2023 · 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.
All 627 in Massachusetts → Every provider in Boston → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Richard Anderson, MDBoston, MA 021141700869831
- Mathew Avram, MDBoston, MA 021141295717296
- Howard Baden, MDBoston, MA 021141427048636
- Melissa Burnett, MDBoston, MA 021141407837818
- Ernesto Gonzalez-Martinez, MDBoston, MA 021141821070806
- Anita Grassi, MDBoston, MA 021141831189513
- Joannes Grevelink, MD PHDBoston, MA 021141538150982
- Joseph Kvedar, MDBoston, MA 021141043200223
Common questions
What is Yiyin Erin Chen, MD, PHD's NPI number?
Yiyin Erin Chen, MD, PHD's National Provider Identifier (NPI) is 1457799439, issued on Jun 12, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Yiyin Erin Chen, MD, PHD located?
The NPPES record lists a practice address at 55 Fruit St, Bul-2, Boston, MA, 02114. Phone: (864) 380-9034. Providers update this record themselves, so call before visiting.
How can I verify Yiyin Erin Chen, MD, PHD's license?
NPPES lists Massachusetts license number A134773, 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 Yiyin Erin Chen, MD, PHD prescribe under Medicare Part D?
In 2024, Yiyin Erin Chen, MD, PHD had 167 Medicare Part D claims for 62 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.