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

Frank Chau, MD

Individual provider Internal Medicine Physician · NPI 1003840315

Frank Chau, MD is an Internal Medicine in Southborough, Massachusetts. Graduated from New York University School of Medicine in 1997, 29 years ago. Practices with Reliant Medical Group Inc, a 638-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
29
Trained at
New York University 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

24 Newton St
Southborough, MA 01772-1215
Phone: (508) 460-3250
Fax: (508) 460-3223
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 203693 (MA)

Record details

NPI number1003840315
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 10, 2006
Last updated in NPPESJanuary 27, 2011
Mailing address24 Newton St, Southborough, MA 01772-1215

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolNEW YORK UNIVERSITY SCHOOL OF MEDICINE
Graduated 1997 (29 years in practice)
Group practice Reliant Medical Group Inc — 638 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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