LILLIAN MESERET ZERIHUN
NPI 1093391740
Internal Medicine in Boston, MA
About Lillian Meseret Zerihun NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LILLIAN MESERET ZERIHUN (NPI 1093391740) is an individual internal medicine provider in Boston, Massachusetts, licensed in Massachusetts (1026648) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 4
Secondary Practice Locations 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Lillian Meseret Zerihun is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Lillian Zerihun reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 4,574 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Massachusetts General Hospital
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02115 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BOSTON, MA 02115
BOSTON, MA 02115
BOSTON, MA 02115
BOSTON, MA 02115
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Lillian Zerihun's NPI number?
The NPI number for Lillian Zerihun is 1093391740. It was assigned to this individual provider in the NPPES registry on March 23, 2021.
Where is Lillian Zerihun located?
Lillian Zerihun practices at 75 Francis St, Boston, MA 02115. The listed phone number is (617) 983-7025.
What is Lillian Zerihun's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Lillian Zerihun enrolled in Medicare?
Yes. Lillian Zerihun is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Lillian Zerihun's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lillian Zerihun reassigns Medicare benefits to 3 organizations: Brigham & Womens Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA) and Massachusetts General Physicians Organization Inc (Boston, MA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Lillian Zerihun's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Lillian Zerihun accept?
Health plans from Taro Health list Lillian Zerihun as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Lillian Zerihun affiliated with any hospitals?
According to CMS data, Lillian Zerihun is affiliated with Massachusetts General Hospital.
When was this NPI record last updated?
The NPPES record for Lillian Zerihun was last updated on July 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Lillian Meseret Zerihun · NPI 1093391740
Internal Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since March 23, 2021.
## Identity
- **NPI:** 1093391740 (Entity type: Individual)
- **Enumerated:** March 23, 2021
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 1026648 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 75 FRANCIS ST, Boston, MA 02115-6106
- **Phone:** (617) 983-7025
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA); Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** July 27, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1093391740) · Data from the CMS NPPES public registry.