Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

William C Liaw, MD

Individual provider Internal Medicine Physician · NPI 1912954611

William C Liaw, MD is an Internal Medicine in Wellesley, Massachusetts. Graduated from University of Virginia School of Medicine in 1994, 32 years ago. Practices with Newton Wellesley Primary Care P C, an 8-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
32
Trained at
University of Virginia School of Medicine
Licensed in
MA
In the registry since
2006
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

40 Walnut St Ste 102
Wellesley, MA 02481-2175
Phone: (781) 943-3000
Fax: (781) 943-3001
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 154021 (MA)

Record details

NPI number1912954611
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 28, 2006
Last updated in NPPESJune 26, 2019
Mailing address40 Walnut Street, Suite 102, Wellesley, MA 02481-2102

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF VIRGINIA SCHOOL OF MEDICINE
Graduated 1994 (32 years in practice)
Group practice Newton Wellesley Primary Care P C — 8 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Wellesley