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MRS. PROMISE LUM NGONGWASHI MSN-PMHNP
NPI 1336815802
Nurse Practitioner - Psychiatric/Mental Health in Clinton, MD

Active since August 17, 2021PECOS Enrolled
9314 PISCATAWAY RD STE 250, CLINTON, MD 20735(240) 965-1715(240) 965-1716 Get Directions Write a Review

NPPES record last updated: December 16, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 16, 2024, Aug 17, 2021 (2 updates tracked since 2021).

About Mrs. Promise Lum Ngongwashi Msn-pmhnp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MRS. PROMISE LUM NGONGWASHI MSN-PMHNP (NPI 1336815802) is an individual psychiatric/mental health provider in Clinton, Maryland, licensed in Maryland (R236187) and active in the NPI registry since August 2021. She is enrolled in Medicare PECOS and maintains a secondary practice location in Upper Marlboro.

NPPES Registry Identity

NPI1336815802
Entity TypeIndividualFemale
Primary Taxonomy363LP0808X
Provider Legal NameMRS. PROMISE LUM NGONGWASHICredential: MSN-PMHNP
Location Address9314 PISCATAWAY RD STE 250Clinton, MD 20735-3630
Mailing Address9314 Piscataway Rd Ste 250Clinton, MD 20735-3630 · (240) 965-1715 · Fax (240) 965-1716
Phone(240) 965-1715
Fax(240) 965-1716
Sole ProprietorNo
Enumeration DateAugust 17, 2021
Last NPPES UpdateDecember 16, 20242 updates tracked since enumeration
NPPES CertifiedDecember 16, 2024
✔ NPI 1336815802 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
Licenses✔ Licensed in MD · R236187✔ Licensed in DC · NP1044901
9314 PISCATAWAY RD STE 250, Clinton, MD 20735
Open in Google Maps ↗

Secondary Practice Location 1

Location 19701 Meadow Lark AveUpper Marlboro, MD 20772-3877 · Phone (240) 701-9785

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. Promise Lum Ngongwashi Msn-pmhnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignment

Medicare enrollment records show Promise Ngongwashi reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

D & d Healthcare LLC
9.6 mi
Mental Health (Including Community Mental Health Center)
4503 GRANT ST NE
Washington, DC 20019
  • Reassigned Medicare billing, District of Columbia enrollment
  • 5 clinicians in this Medicare group
NPI 1164261517 (304) 208-2908

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 20735 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
$100.31 typical visit price
range $65.18 – $194.86
Typical copayment $25.07 (range $16.29 – $48.71)
Most-billed visit code 99203
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

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

RECOVERY INNOVATIONS, INC
Community/Behavioral Health
9314 PISCATAWAY RD STE 250
CLINTON, MD 20735
Prince George's County (240) 965-1715

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 Promise Ngongwashi's NPI number?

The NPI number for Promise Ngongwashi is 1336815802. It was assigned to this individual provider in the NPPES registry on August 17, 2021.

Where is Promise Ngongwashi located?

Promise Ngongwashi practices at 9314 Piscataway Rd Ste 250, Clinton, MD 20735. The listed phone number is (240) 965-1715.

What is Promise Ngongwashi's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Promise Ngongwashi enrolled in Medicare?

Yes. Promise Ngongwashi is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Promise Ngongwashi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Promise Ngongwashi reassigns Medicare benefits to D & d Healthcare LLC (Washington, DC). 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 Promise Ngongwashi'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 Promise Ngongwashi was last updated on December 16, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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.