MR. ERNEST OKWUONU M.D.
NPI 1639735665
Student in an Organized Health Care Education/Training Program in Rockaway, NY
About Mr. Ernest Okwuonu M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. ERNEST OKWUONU M.D. (NPI 1639735665) is an individual student in an organized health care education/training program in Rockaway, New York and active in the NPI registry since May 2019. He is enrolled in Medicare PECOS, maintains a secondary practice location in Palo Alto, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Mr. Ernest Okwuonu 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
5Medicare enrollment records show Ernest Okwuonu reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Sioux Falls, SD 57104
- Reassigned Medicare billing, California enrollment
- 41 clinicians in this Medicare group
Bismarck, ND 58504
- Reassigned Medicare billing, North Dakota enrollment
- 779 clinicians in this Medicare group
Vancouver, WA 98686
- Reassigned Medicare billing, Washington enrollment
- 754 clinicians in this Medicare group
Gilroy, CA 95020
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1629301346 (California), NPI 1043354020 (California)
- 2,460 clinicians in this Medicare group
Walnut Creek, CA 94597
- Reassigned Medicare billing, California enrollment
- 149 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.
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 Ernest Okwuonu's NPI number?
The NPI number for Ernest Okwuonu is 1639735665. It was assigned to this individual provider in the NPPES registry on May 15, 2019.
Where is Ernest Okwuonu located?
Ernest Okwuonu practices at 327 Beach 19th St., Rockaway, NY 11691. The listed phone number is (718) 869-7772.
What is Ernest Okwuonu's specialty?
The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.
Is Ernest Okwuonu enrolled in Medicare?
Yes. Ernest Okwuonu 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 Ernest Okwuonu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ernest Okwuonu reassigns Medicare benefits to 5 organizations: Asana Integrated Medical Group PC (Sioux Falls, SD), Sanford Bismarck (Bismarck, ND), Legacy Salmon Creek Hospital (Vancouver, WA), County Of Santa Clara (Gilroy, CA) and Comprehensive Psychiatric Services, A Medical Group (Walnut Creek, CA). 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 Ernest Okwuonu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ernest Okwuonu accept?
Health plans from Security Health Plan list Ernest Okwuonu 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.
When was this NPI record last updated?
The NPPES record for Ernest Okwuonu was last updated on April 3, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Mr. Ernest Okwuonu, M.D. · NPI 1639735665
Student in an Organized Health Care Education/Training Program provider in Rockaway, New York. Individual provider, active in the CMS NPPES registry since May 15, 2019.
## Identity
- **NPI:** 1639735665 (Entity type: Individual)
- **Enumerated:** May 15, 2019
- **Primary specialty:** Student in an Organized Health Care Education/Training Program · taxonomy 390200000X
- **Sole proprietor:** Yes
## Practice location
- **Address:** 327 BEACH 19TH ST., Rockaway, NY 11691
- **Phone:** (718) 869-7772
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Asana Integrated Medical Group PC (NPI 1396783379, Sioux Falls, SD); Sanford Bismarck (NPI 1811941172, Bismarck, ND); Legacy Salmon Creek Hospital (NPI 1356357784, Vancouver, WA); County Of Santa Clara (NPI 1922093533, Gilroy, CA); Comprehensive Psychiatric Services, A Medical Group (NPI 1184785834, Walnut Creek, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** April 3, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1639735665) · Data from the CMS NPPES public registry.