MRS. NGONACK JOAN NGEMBUS MD
NPI 1891436325
Internal Medicine in Upper Marlboro, MD
About Mrs. Ngonack Joan Ngembus Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. NGONACK JOAN NGEMBUS MD (NPI 1891436325) is an individual internal medicine provider in Upper Marlboro, Maryland, licensed in Maryland (D0103106) and active in the NPI registry since April 2022. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of State University Of Ny Upstate Medical University (2025).
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
Mrs. Ngonack Joan Ngembus 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 Reassignment
Medicare enrollment records show Ngonack Ngembus reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Upper Marlboro, MD 20774
- Reassigned Medicare billing, District of Columbia enrollment
- 15 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20774 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 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
UPPER MARLBORO, MD 20774
UPPER MARLBORO, MD 20774
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 Ngonack Ngembus's NPI number?
The NPI number for Ngonack Ngembus is 1891436325. It was assigned to this individual provider in the NPPES registry on April 6, 2022.
Where is Ngonack Ngembus located?
Ngonack Ngembus practices at 950 Harry S Truman Dr N Ste 550, Upper Marlboro, MD 20774. The listed phone number is (301) 627-3500.
What is Ngonack Ngembus's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Ngonack Ngembus enrolled in Medicare?
Yes. Ngonack Ngembus 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 organization bills Medicare for Ngonack Ngembus's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ngonack Ngembus reassigns Medicare benefits to Maryland Primary Care And Wellness (Upper Marlboro, MD). The 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 Ngonack Ngembus's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Ngonack Ngembus was last updated on August 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Mrs. Ngonack Joan Ngembus, MD · NPI 1891436325
Internal Medicine physician in Upper Marlboro, Maryland. Individual provider, active in the CMS NPPES registry since April 6, 2022.
## Identity
- **NPI:** 1891436325 (Entity type: Individual)
- **Enumerated:** April 6, 2022
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** D0103106 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 950 HARRY S TRUMAN DR N STE 550, Upper Marlboro, MD 20774-5485
- **Phone:** (301) 627-3500
## 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:** Maryland Primary Care And Wellness (NPI 1568075737, Upper Marlboro, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of Ny Upstate Medical University, class of 2025
## Record status
- **NPPES last updated:** August 20, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1891436325) · Data from the CMS NPPES public registry.