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

Dr. Shirley Pak So, MD

Individual provider Geriatric Medicine (Internal Medicine) Physician · NPI 1639466592

Dr. Shirley Pak So, MD is a Geriatric Medicine in Worcester, Massachusetts. Qualified in 2004, 22 years ago. Practices with Umass Memorial Medical Group Inc, a 2,467-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
22
Licensed in
MA
In the registry since
2011
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

291 Lincoln St
Worcester, MA 01605-3643
Phone: (508) 334-6251
Fax: (508) 334-6906
Show map & directions

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

Specialties & licences

Geriatric Medicine (Internal Medicine) Physician (primary) Taxonomy 207RG0300X · Licence 249041 (MA)

Record details

NPI number1639466592
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 29, 2011
Last updated in NPPESMay 1, 2022
Certification dateMay 1, 2022

Medicare enrollment

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

Medicare specialtyGERIATRIC MEDICINE
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice Umass Memorial Medical Group Inc — 2467 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Worcester