MRS. NGONACK JOAN NGEMBUS MD
NPI 1891436325
Internal Medicine in Upper Marlboro, MD

Active since April 06, 2022PECOS EnrolledAccepts Medicare Assignment
14314 OLD MARLBORO PIKE, UPPER MARLBORO, MD 20772(301) 627-3500 Get Directions Write a Review

NPPES record last updated: December 11, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Dec 11, 2025, May 11, 2022, Apr 6, 2022 (3 updates tracked since 2022).

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 a secondary practice location in Silver Spring, and is a graduate of State University Of Ny Upstate Medical University (2025).

NPPES Registry Identity

NPI1891436325
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameMRS. NGONACK JOAN NGEMBUSCredential: MD
Location Address14314 OLD MARLBORO PIKEUpper Marlboro, MD 20772-2840
Mailing Address14314 Old Marlboro PikeUpper Marlboro, MD 20772-2840 · (301) 627-3500 · Fax (833) 559-0865
Sole ProprietorNo
Medical School CMSState University Of Ny Upstate Medical UniversityGraduated 2025
Enumeration DateApril 6, 2022
Last NPPES UpdateDecember 11, 20253 updates tracked since enumeration
NPPES CertifiedDecember 11, 2025
NPI 1891436325 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License Licensed in MD · D0103106
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
14314 OLD MARLBORO PIKE, Upper Marlboro, MD 20772

Secondary Practice Location 1

Location 13921 Ferrara DrSilver Spring, MD 20906-4709 · Phone (301) 946-6420

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

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.

PECOS PAC ID5597271288
PECOS Enrollment IDI20250721000897
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20772 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$147.85 typical visit price
range $65.18 – $194.86
Typical copayment $36.96 (range $16.29 – $48.71)
Most-billed visit code 99204
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 7

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Clinic/Center (Rehabilitation, Substance Use Disorder)
14314 OLD MARLBORO PIKE
UPPER MARLBORO, MD 20772
Internal Medicine
14314 OLD MARLBORO PIKE
UPPER MARLBORO, MD 20772
Internal Medicine
14314 OLD MARLBORO PIKE
UPPER MARLBORO, MD 20772
Family Medicine
14314 OLD MARLBORO PIKE
UPPER MARLBORO, MD 20772
Internal Medicine
14314 OLD MARLBORO PIKE
UPPER MARLBORO, MD 20772
Clinic/Center (Mental Health (Including Community Mental Health Center))
14314 OLD MARLBORO PIKE
UPPER MARLBORO, MD 20772
Community/Behavioral Health
14314 OLD MARLBORO PIKE
UPPER MARLBORO, MD 20772

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 14314 Old Marlboro Pike, Upper Marlboro, MD 20772. 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.

When was this NPI record last updated?

The NPPES record for Ngonack Ngembus was last updated on December 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.