DR. AMIR AMERI MD
NPI 1164089843
Internal Medicine - Medical Oncology in Baltimore, MD
About Dr. Amir Ameri Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. AMIR AMERI MD (NPI 1164089843) is an individual medical oncology provider in Baltimore, Maryland, licensed in Maryland (D0096808) and active in the NPI registry since May 2019. He is enrolled in Medicare PECOS, is affiliated with Union Hospital Inc, and is a graduate of Harvard Medical School (2019).
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 and accepts Medicare assignment
Dr. Amir Ameri 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 Reassignments
2Medicare enrollment records show Amir Ameri reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Towson, MD 21204
- Reassigned Medicare billing, Maryland enrollment
- 501 clinicians in this Medicare group
Terre Haute, IN 47807
- Reassigned Medicare billing, Indiana enrollment
- 306 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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Union Hospital Inc
Acute Care Hospitals · Terre Haute, INUniversity Of MD St Joseph Medical Center
Acute Care Hospitals · Towson, MDNorthern Montana Hospital
Critical Access Hospitals · Havre, MTPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21287 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.
BALTIMORE, MD 21287
BALTIMORE, MD 21287
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 Amir Ameri's NPI number?
The NPI number for Amir Ameri is 1164089843. It was assigned to this individual provider in the NPPES registry on May 29, 2019.
Where is Amir Ameri located?
Amir Ameri practices at 1800 Orleans St, Baltimore, MD 21287. The listed phone number is (410) 955-5000.
What is Amir Ameri's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.
Is Amir Ameri enrolled in Medicare?
Yes. Amir Ameri 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 Amir Ameri's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Amir Ameri reassigns Medicare benefits to 2 organizations: University Of Maryland St. Joseph Medical Group, LLC (Towson, MD) and Union Associated Physicians Clinic, LLC (Terre Haute, IN). 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 Amir Ameri's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Amir Ameri affiliated with any hospitals?
According to CMS data, Amir Ameri is affiliated with Union Hospital Inc, University Of MD St Joseph Medical Center and Northern Montana Hospital.
When was this NPI record last updated?
The NPPES record for Amir Ameri was last updated on February 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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. Amir Ameri, MD · NPI 1164089843
Medical Oncology physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since May 29, 2019.
## Identity
- **NPI:** 1164089843 (Entity type: Individual)
- **Enumerated:** May 29, 2019
- **Primary specialty:** Internal Medicine - Medical Oncology · taxonomy 207RX0202X
- **State license:** D0096808 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 1800 ORLEANS ST, Baltimore, MD 21287-0010
- **Phone:** (410) 955-5000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): University Of Maryland St. Joseph Medical Group, LLC (NPI 1053816074, Towson, MD); Union Associated Physicians Clinic, LLC (NPI 1891028379, Terre Haute, IN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Harvard Medical School, class of 2019
## Record status
- **NPPES last updated:** February 12, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1164089843) · Data from the CMS NPPES public registry.