Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Dr. Nancy Ryan Petersen, MD

Individual provider Gynecology Physician · NPI 1972604791

Dr. Nancy Ryan Petersen, MD practises Obstetrics/Gynecology in Burlington, Massachusetts. Graduated from Albany Medical College of Union University in 1979, 47 years ago. Practices with Mass General Brigham Medical Group Northern Massachusetts Inc, a 819-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
47
Trained at
Albany Medical College of Union University
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

41 Mall Rd Lahey Clinic Inc
Burlington, MA 01805-0001 Not confirmed with CMS for 15 years — call before visiting
Phone: (781) 744-8000
Fax: (781) 744-8988
Show map & directions

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

Specialties & licences

Gynecology Physician (primary) Taxonomy 207VG0400X · Licence 50947 (MA)

Record details

NPI number1972604791
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 26, 2006
Last updated in NPPESOctober 24, 2011

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolALBANY MEDICAL COLLEGE OF UNION UNIVERSITY
Graduated 1979 (47 years in practice)
Group practice Mass General Brigham Medical Group Northern Massachusetts Inc — 819 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients441
Services billed 793 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Mass General Brigham Medical Group Northern Massachusetts Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 819 clinicians in the practice; 12 are shown here.

Other providers in Burlington