PATRICK LESTER DY ONG
NPI 1538974563
Nurse Practitioner in Fort Washington, MD
About Patrick Lester Dy Ong NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PATRICK LESTER DY ONG (NPI 1538974563) is an individual nurse practitioner in Fort Washington, Maryland, licensed in Maryland (R271503) and active in the NPI registry since February 2025. He is enrolled in Medicare PECOS and is a graduate of Other (2024).
NPPES Registry Identity
Specialties & Licenses
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
Patrick Lester Dy Ong 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 Patrick Lester Ong reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Fort Washington, MD 20744
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- Also billed through NPI 1598435059 (Maryland)
- 105 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 20744 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 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FORT WASHINGTON, MD 20744
FORT WASHINGTON, MD 20744
FORT WASHINGTON, MD 20744
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 Patrick Lester Ong's NPI number?
The NPI number for Patrick Lester Ong is 1538974563. It was assigned to this individual provider in the NPPES registry on February 7, 2025.
Where is Patrick Lester Ong located?
Patrick Lester Ong practices at 9550 Livingston Rd Ste 102, Fort Washington, MD 20744. The listed phone number is (240) 253-6312.
What is Patrick Lester Ong's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Patrick Lester Ong enrolled in Medicare?
Yes. Patrick Lester Ong 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 Patrick Lester Ong's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Patrick Lester Ong reassigns Medicare benefits to Crh MD Management, LLC (Fort Washington, 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 Patrick Lester Ong'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 Patrick Lester Ong was last updated on July 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Patrick Lester Dy Ong · NPI 1538974563
Nurse Practitioner physician in Fort Washington, Maryland. Individual provider, active in the CMS NPPES registry since February 7, 2025.
## Identity
- **NPI:** 1538974563 (Entity type: Individual)
- **Enumerated:** February 7, 2025
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** R271503 (Maryland)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 9550 LIVINGSTON RD STE 102, Fort Washington, MD 20744-4975
- **Phone:** (240) 253-6312
## 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:** Crh MD Management, LLC (NPI 1841072477, Fort Washington, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2024
## Record status
- **NPPES last updated:** July 3, 2025
---
Source: [NPI Profile](https://npiprofile.com/npi/1538974563) · Data from the CMS NPPES public registry.