DR. AARON HAKIM MD
NPI 1538729330
Internal Medicine - Transplant Hepatology in Boston, MA
About Dr. Aaron Hakim Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. AARON HAKIM MD (NPI 1538729330) is an individual transplant hepatology provider in Boston, Massachusetts, licensed in Massachusetts (1027566) and active in the NPI registry since June 2019. He is enrolled in Medicare PECOS, is affiliated with Beth Israel Deaconess Medical Center, and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses 3
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
Dr. Aaron Hakim Md 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 Reassignment
Medicare enrollment records show Aaron Hakim reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 2,579 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.
Beth Israel Deaconess Medical Center
Acute Care Hospitals · Boston, MAOther 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 02215
BOSTON, MA 02215
BOSTON, MA 02215
BOSTON, MA 02215
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 Aaron Hakim's NPI number?
The NPI number for Aaron Hakim is 1538729330. It was assigned to this individual provider in the NPPES registry on June 14, 2019.
Where is Aaron Hakim located?
Aaron Hakim practices at 330 Brookline Ave, Boston, MA 02215. The listed phone number is (617) 667-7000.
What is Aaron Hakim's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Transplant Hepatology, with taxonomy code 207RT0003X.
Is Aaron Hakim enrolled in Medicare?
Yes. Aaron Hakim 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 organization bills Medicare for Aaron Hakim's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Aaron Hakim reassigns Medicare benefits to Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (Boston, MA). The 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 Aaron Hakim's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Aaron Hakim accept?
Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Aaron Hakim 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 Aaron Hakim affiliated with any hospitals?
According to CMS data, Aaron Hakim is affiliated with Beth Israel Deaconess Medical Center.
When was this NPI record last updated?
The NPPES record for Aaron Hakim was last updated on July 8, 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.
# Dr. Aaron Hakim, MD · NPI 1538729330
Transplant Hepatology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since June 14, 2019.
## Identity
- **NPI:** 1538729330 (Entity type: Individual)
- **Enumerated:** June 14, 2019
- **Primary specialty:** Internal Medicine - Transplant Hepatology · taxonomy 207RT0003X
- **State license:** 1027566 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 330 BROOKLINE AVE, Boston, MA 02215-5400
- **Phone:** (617) 667-7000
## 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:** Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (NPI 1194765438, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** July 8, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1538729330) · Data from the CMS NPPES public registry.