JOHN I NWANKWO M.D.
NPI 1831400498
Radiology - Diagnostic Radiology in New York, NY
About John I Nwankwo M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN I NWANKWO M.D. (NPI 1831400498) is an individual diagnostic radiology provider in New York, New York, licensed in New York (257635) and active in the NPI registry since June 2010. He is enrolled in Medicare PECOS, is affiliated with Hackensack Meridian Health, Mountainside Medical, and is a graduate of Johns Hopkins University School Of Medicine (2005).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
John I Nwankwo M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
24Medicare enrollment records show John Nwankwo reassigns Medicare billing to 24 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- 623 clinicians in this Medicare group
New York, NY 10037
- Reassigned Medicare billing, New York enrollment
- 2,094 clinicians in this Medicare group
New York, NY 10037
- Reassigned Medicare billing, New York enrollment
- 676 clinicians in this Medicare group
Bronx, NY 10451
- Reassigned Medicare billing, New York enrollment
- 971 clinicians in this Medicare group
Brooklyn, NY 11235
- Reassigned Medicare billing, New York enrollment
- 638 clinicians in this Medicare group
West Islip, NY 11795
- Reassigned Medicare billing, New York enrollment
- 356 clinicians in this Medicare group
Hamilton, NJ 08691
- Reassigned Medicare billing, New York enrollment
- 51 clinicians in this Medicare group
Poughkeepsie, NY 12601
- Reassigned Medicare billing, New York enrollment
- 638 clinicians in this Medicare group
Buffalo, NY 14214
- Reassigned Medicare billing, New York enrollment
- 27 clinicians in this Medicare group
Lewiston, NY 14092
- Reassigned Medicare billing, New York enrollment
- 19 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 8
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.
Hackensack Meridian Health, Mountainside Medical
Acute Care Hospitals · Montclair, NJVassar Brothers Medical Center
Acute Care Hospitals · Poughkeepsie, NYNorthern Dutchess Hospital
Acute Care Hospitals · Rhinebeck, NYSouth Brooklyn Health
Acute Care Hospitals · Brooklyn, NYMercy Hospital Of Buffalo
Acute Care Hospitals · Buffalo, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10016 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 John Nwankwo's NPI number?
The NPI number for John Nwankwo is 1831400498. It was assigned to this individual provider in the NPPES registry on June 29, 2010.
Where is John Nwankwo located?
John Nwankwo practices at 160 Madison Ave Apt 18E, New York, NY 10016. The listed phone number is (952) 595-1100.
What is John Nwankwo's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is John Nwankwo enrolled in Medicare?
Yes. John Nwankwo is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for John Nwankwo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Nwankwo reassigns Medicare benefits to 24 organizations: Metropolitan Medical Practice Plan PC (New York, NY), Physician Affiliate Group Of New York PC (New York, NY), Harlem Medical Associates PC (New York, NY), Downtown Bronx Medical Associates PC (Bronx, NY), Coney Island Medical Practice Plan, P.C. (Brooklyn, NY) and 19 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 John Nwankwo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Nwankwo accept?
Health plans from CareSource, Cigna Healthcare, HMO Louisiana, Imperial Health Plan of the Southwest, Inc. and Oscar Health and 1 other insurer list John Nwankwo 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 John Nwankwo affiliated with any hospitals?
According to CMS data, John Nwankwo is affiliated with Hackensack Meridian Health, Mountainside Medical, Vassar Brothers Medical Center, Northern Dutchess Hospital, South Brooklyn Health and Mercy Hospital Of Buffalo.
When was this NPI record last updated?
The NPPES record for John Nwankwo was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# John I Nwankwo, M.D. · NPI 1831400498
Diagnostic Radiology physician in New York, New York. Individual provider, active in the CMS NPPES registry since June 29, 2010.
## Identity
- **NPI:** 1831400498 (Entity type: Individual)
- **Enumerated:** June 29, 2010
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** 257635 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 160 MADISON AVE APT 18E, New York, NY 10016-5496
- **Phone:** (952) 595-1100 · **Fax:** (612) 294-4903
## 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:** 24 organizations under Medicare reassignment (form CMS-855R): Metropolitan Medical Practice Plan PC (NPI 1306138383, New York, NY); Physician Affiliate Group Of New York PC (NPI 1013375526, New York, NY); Harlem Medical Associates PC (NPI 1487957692, New York, NY); Downtown Bronx Medical Associates PC (NPI 1689618407, Bronx, NY); Coney Island Medical Practice Plan, P.C. (NPI 1386951762, Brooklyn, NY); and 19 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Johns Hopkins University School Of Medicine, class of 2005
## Record status
- **NPPES last updated:** July 21, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1831400498) · Data from the CMS NPPES public registry.