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

Dr. Gregory William Ruhnke, MD

Individual provider Internal Medicine Physician · NPI 1679541395

Dr. Gregory William Ruhnke, MD is an Internal Medicine in Boston, Massachusetts. Graduated from Stanford University School of Medicine in 1998, 28 years ago. Practices with University of Chicago, a 1,681-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
28
Trained at
Stanford 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.

See every abbreviation used in this directory →

Practice location Address checks out

15 Parkman Street Wac 108 Medical Walk In Unit
Boston, MA 02114-3117
Phone: (617) 726-2707
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 210234 (MA)

Record details

NPI number1679541395
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 9, 2006
Last updated in NPPESSeptember 2, 2008

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolSTANFORD UNIVERSITY SCHOOL OF MEDICINE
Graduated 1998 (28 years in practice)
Group practice University Of Chicago — 1681 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Boston