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

Gregory Lines, MD

Individual provider Internal Medicine Physician · NPI 1053842773

Gregory Lines, MD is an Internal Medicine in Cambridge, Massachusetts. Qualified in 2017, 9 years ago. Practices with Cambridge Public Health Commission, a 649-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
9
Licensed in
MA
In the registry since
2017
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

1493 Cambridge St
Cambridge, MA 02139-1047
Phone: (617) 665-1000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 282252 (MA)

Record details

NPI number1053842773
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 23, 2017
Last updated in NPPESJune 9, 2022
Certification dateJune 9, 2022
Mailing address1493 Cambridge St, Cambridge, MA 02139-1047

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice Cambridge Public Health Commission — 649 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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