Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Wei-Che Ko, MD

Individual provider Dermatology Physician · NPI 1821523606

Wei-Che Ko, MD practises Dermatology in Worcester, Massachusetts. Graduated from University of Massachusetts Medical School in 2017, 9 years ago. Practices with Umass Memorial Medical Group Inc, a 2,467-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
9
Trained at
University of Massachusetts Medical School
Licensed in
MA
In the registry since
2017
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

281 Lincoln St
Worcester, MA 01605-2138
Phone: (508) 334-5979
Fax: (508) 334-5232
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 50 Staniford St, Boston, MA 02114-2517 — (617) 726-2914

Specialties & licences

Dermatology Physician (primary) Taxonomy 207N00000X · Licence 287348 (MA)

Record details

NPI number1821523606
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 28, 2017
Last updated in NPPESJune 30, 2026
Certification dateJune 30, 2026

Medicare enrollment

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

Medicare specialtyDERMATOLOGY
Medical schoolUNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL
Graduated 2017 (9 years in practice)
Group practice Umass Memorial Medical Group Inc — 2467 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.

Skin biopsy 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 patients39
Services billed 1,869 a service is one billed item, such as a visit, a test or a procedure
Average patient age69

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Umass Memorial Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2467 clinicians in the practice; 12 are shown here.

Other providers in Worcester