DR. AHMAD ALI KARIM M.D.
NPI 1831416940
Internal Medicine in New York, NY
About Dr. Ahmad Ali Karim M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. AHMAD ALI KARIM M.D. (NPI 1831416940) is an individual internal medicine provider in New York, New York, licensed in New York (329930-01) and active in the NPI registry since April 2010. He is enrolled in Medicare PECOS, is affiliated with Suny/downstate University Hospital Of Brooklyn, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
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. Ahmad Ali Karim M.d. 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
10Medicare enrollment records show Ahmad Karim reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New Hyde Park, NY 11040
- Reassigned Medicare billing, New York enrollment
- 9,353 clinicians in this Medicare group
East Patchogue, NY 11772
- Reassigned Medicare billing, New York enrollment
- 640 clinicians in this Medicare group
Philadelphia, PA 19152
- Reassigned Medicare billing, New York enrollment
- 11 clinicians in this Medicare group
Arlington, VA 22207
- Reassigned Medicare billing, District of Columbia enrollment
- 436 clinicians in this Medicare group
Vienna, VA 22182
- Reassigned Medicare billing, District of Columbia enrollment
- 19 clinicians in this Medicare group
Waldorf, MD 20603
- Reassigned Medicare billing, District of Columbia and Virginia enrollments
- 2,618 clinicians in this Medicare group
Fishersville, VA 22939
- Reassigned Medicare billing, Virginia enrollment
- 434 clinicians in this Medicare group
Low Moor, VA 24457
- Reassigned Medicare billing, Virginia enrollment
- 88 clinicians in this Medicare group
Salem, VA 24153
- Reassigned Medicare billing, Virginia enrollment
- 181 clinicians in this Medicare group
West Memphis, AR 72301
- Reassigned Medicare billing, Virginia enrollment
- 528 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.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Suny/Downstate University Hospital Of Brooklyn
Acute Care Hospitals · Brooklyn, NYAugusta Health
Acute Care Hospitals · Fishersville, VALewisgale Medical Center
Acute Care Hospitals · Salem, VAVirginia Hospital Center
Acute Care Hospitals · Arlington, VALewisgale Hospital Alleghany
Acute Care Hospitals · Low Moor, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10075 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
NEW YORK, NY 10075
NEW YORK, NY 10075
NEW YORK, NY 10075
NEW YORK, NY 10075
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 Ahmad Karim's NPI number?
The NPI number for Ahmad Karim is 1831416940. It was assigned to this individual provider in the NPPES registry on April 28, 2010.
Where is Ahmad Karim located?
Ahmad Karim practices at 100 E 77th St, New York, NY 10075. The listed phone number is (212) 434-2142.
What is Ahmad Karim's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Ahmad Karim enrolled in Medicare?
Yes. Ahmad Karim 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 Ahmad Karim's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ahmad Karim reassigns Medicare benefits to 10 organizations: North Shore - Lij Medical PC (New Hyde Park, NY), Cogent Medical Care PC (East Patchogue, NY), Inhospital Physicians Corp (Philadelphia, PA), Virginia Hospital Center Physician Group LLC (Arlington, VA), Fairfax Internal Medicine Associates, PC (Vienna, VA) and 5 more organizations, listed in the Medicare section above. 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 Ahmad Karim's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Ahmad Karim affiliated with any hospitals?
According to CMS data, Ahmad Karim is affiliated with Suny/Downstate University Hospital Of Brooklyn, Augusta Health, Lewisgale Medical Center, Virginia Hospital Center and Lewisgale Hospital Alleghany.
When was this NPI record last updated?
The NPPES record for Ahmad Karim was last updated on February 11, 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. Ahmad Ali Karim, M.D. · NPI 1831416940
Internal Medicine physician in New York, New York. Individual provider, active in the CMS NPPES registry since April 28, 2010.
## Identity
- **NPI:** 1831416940 (Entity type: Individual)
- **Enumerated:** April 28, 2010
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 329930-01 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 E 77TH ST, New York, NY 10075-1850
- **Phone:** (212) 434-2142 · **Fax:** (212) 434-2446
## 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:** 10 organizations under Medicare reassignment (form CMS-855R): North Shore - Lij Medical PC (NPI 1790043479, New Hyde Park, NY); Cogent Medical Care PC (NPI 1912941238, East Patchogue, NY); Inhospital Physicians Corp (NPI 1073971750, Philadelphia, PA); Virginia Hospital Center Physician Group LLC (NPI 1043617889, Arlington, VA); Fairfax Internal Medicine Associates, PC (NPI 1790987352, Vienna, VA); and 5 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Eastern Virginia Medical School, class of 2010
## Record status
- **NPPES last updated:** February 11, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1831416940) · Data from the CMS NPPES public registry.