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

Ruth A. Ross-McCormack, MD

Individual provider Gastroenterology Physician · NPI 1295835833

Ruth A. Ross-McCormack, MD is an Internal Medicine in Arlington, Massachusetts. Graduated from Wake Forest University School of Medicine in 1990, 36 years ago. Practices with Beth Israel Lahey Health Primary Care, Inc, a 353-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
36
Trained at
Wake Forest 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

37 Broadway Lahey Arlington
Arlington, MA 02474-5552
Phone: (781) 641-0100
Fax: (781) 744-7132
Show map & directions

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

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 77649 (MA)

Record details

NPI number1295835833
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 24, 2006
Last updated in NPPESOctober 30, 2012
Mailing addressLahey Clinic, 41 Mall Road, Burlington, MA 01805-0001

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesGASTROENTEROLOGY
Medical schoolWAKE FOREST UNIVERSITY SCHOOL OF MEDICINE
Graduated 1990 (36 years in practice)
Group practice Beth Israel Lahey Health Primary Care, Inc — 353 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare