MARIA J GAINES-ONWUKWE NURSE PRACTITIONER
NPI 1154009173
Nurse Practitioner - Acute Care in Aberdeen, MD
About Maria J Gaines-onwukwe Nurse Practitioner NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARIA J GAINES-ONWUKWE NURSE PRACTITIONER (NPI 1154009173) is an individual acute care provider in Aberdeen, Maryland, licensed in Maryland (R183361) and active in the NPI registry since July 2023. She is enrolled in Medicare PECOS, is affiliated with Umd Upper Chesapeake Medical Center, and is a graduate of Other (2022).
NPPES Registry Identity
Specialties & Licenses 10
Group Practice 1
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
Maria J Gaines-onwukwe Nurse Practitioner 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 Maria Gaines-onwukwe reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Aberdeen, MD 21001
- Reassigned Medicare billing, Maryland enrollment
- 97 clinicians in this Medicare group
Havre De Grace, MD 21078
- Reassigned Medicare billing, Maryland enrollment
- 102 clinicians in this Medicare group
Baltimore, MD 21239
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 3,530 clinicians in this Medicare group
Towson, MD 21204
- Reassigned Medicare billing, Maryland enrollment
- 501 clinicians in this Medicare group
Cumberland, MD 21502
- Reassigned Medicare billing, Maryland enrollment
- 96 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 3
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Umd Upper Chesapeake Medical Center
Acute Care Hospitals · Bel Air, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21001 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ABERDEEN, MD 21001
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 Maria Gaines-onwukwe's NPI number?
The NPI number for Maria Gaines-onwukwe is 1154009173. It was assigned to this individual provider in the NPPES registry on July 10, 2023.
Where is Maria Gaines-onwukwe located?
Maria Gaines-onwukwe practices at 1013 Beards Hill Rd Ste 101M, Aberdeen, MD 21001. The listed phone number is (443) 655-3262.
What is Maria Gaines-onwukwe's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.
Is Maria Gaines-onwukwe enrolled in Medicare?
Yes. Maria Gaines-onwukwe 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 Maria Gaines-onwukwe's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Maria Gaines-onwukwe reassigns Medicare benefits to 5 organizations: Adfinitas Health At Upper Chesapeake Aberdeen LLC (Aberdeen, MD), Adfinitas Health At Upper Chesapeake Harford Memorial LLC (Havre De Grace, MD), Medstar Medical Group II LLC (Baltimore, MD), University Of Maryland St. Joseph Medical Group, LLC (Towson, MD) and Mep Observation Services LLC (Cumberland, MD). 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 Maria Gaines-onwukwe's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Maria Gaines-onwukwe affiliated with any hospitals?
According to CMS data, Maria Gaines-onwukwe is affiliated with Umd Upper Chesapeake Medical Center.
When was this NPI record last updated?
The NPPES record for Maria Gaines-onwukwe was last updated on August 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Maria J Gaines-Onwukwe, NURSE PRACTITIONER · NPI 1154009173
Acute Care physician in Aberdeen, Maryland. Individual provider, active in the CMS NPPES registry since July 10, 2023.
## Identity
- **NPI:** 1154009173 (Entity type: Individual)
- **Enumerated:** July 10, 2023
- **Primary specialty:** Nurse Practitioner - Acute Care · taxonomy 363LA2100X
- **State license:** R183361 (Maryland)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1013 BEARDS HILL RD STE 101M, Aberdeen, MD 21001-2295
- **Phone:** (443) 655-3262
## 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): Adfinitas Health At Upper Chesapeake Aberdeen LLC (NPI 1346941010, Aberdeen, MD); Adfinitas Health At Upper Chesapeake Harford Memorial LLC (NPI 1457051724, Havre De Grace, MD); Medstar Medical Group II LLC (NPI 1184046187, Baltimore, MD); University Of Maryland St. Joseph Medical Group, LLC (NPI 1053816074, Towson, MD); Mep Observation Services LLC (NPI 1093003550, Cumberland, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** August 6, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1154009173) · Data from the CMS NPPES public registry.