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

Rachel Elizabeth Hainline, MD

Individual provider Internal Medicine Physician · NPI 1841870565

Rachel Elizabeth Hainline, MD practises Internal Medicine in Boston, Massachusetts. Qualified in 2021, 5 years ago. Practices with Legacy Healthcare Services Inc, a 3,624-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
5
Licensed in
MA
In the registry since
2021
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

800 Washington St
Boston, MA 02111-1552
Phone: (617) 636-5000
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 289031 (MA)

Record details

NPI number1841870565
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 8, 2021
Last updated in NPPESJune 20, 2021
Certification dateJune 20, 2021

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Group practice Legacy Healthcare Services Inc — 3624 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 patients11
Services billed 35 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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. Those with a page here are linked.

Colleagues at Legacy Healthcare Services Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3624 clinicians in the practice; 12 are shown here.

Other providers in Boston