ANDREW C AHN M.D.
NPI 1730291402
Internal Medicine in Boston, MA
About Andrew C Ahn M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANDREW C AHN M.D. (NPI 1730291402) is an individual internal medicine provider in Boston, Massachusetts, licensed in Massachusetts (206819) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Andrew C Ahn M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Andrew Ahn reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 346 clinicians in this Medicare group
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 1,477 clinicians in this Medicare group
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02215 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 7
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
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 Andrew Ahn's NPI number?
The NPI number for Andrew Ahn is 1730291402. It was assigned to this individual provider in the NPPES registry on August 31, 2006.
Where is Andrew Ahn located?
Andrew Ahn practices at 401 Park Dr Suite 22A West, Boston, MA 02215. The listed phone number is (617) 384-8581.
What is Andrew Ahn's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Andrew Ahn enrolled in Medicare?
Yes. Andrew Ahn is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Andrew Ahn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Ahn reassigns Medicare benefits to 3 organizations: Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is (Boston, MA), Beth Israel Deaconess Medical Center, Inc. (Boston, MA) and Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr 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 Andrew Ahn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Andrew Ahn was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.
# Andrew C Ahn, M.D. · NPI 1730291402
Internal Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since August 31, 2006.
## Identity
- **NPI:** 1730291402 (Entity type: Individual)
- **Enumerated:** August 31, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 206819 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 401 PARK DR, SUITE 22A WEST, Boston, MA 02215-3325
- **Phone:** (617) 384-8581
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is (NPI 1497151773, Boston, MA); Beth Israel Deaconess Medical Center, Inc. (NPI 1548202641, Boston, MA); Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (NPI 1194765438, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 8, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1730291402) · Data from the CMS NPPES public registry.