ANN LI
NPI 1578423570
Physician Assistant in Germantown, MD
About Ann Li NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANN LI (NPI 1578423570) is an individual physician assistant in Germantown, Maryland, licensed in Maryland (C0010194) and active in the NPI registry since November 2025. She is enrolled in Medicare PECOS, is affiliated with Holy Cross Germantown Hospital, and is a graduate of Other (2025).
NPPES Registry Identity
Specialties & Licenses
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
Ann Li 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Holy Cross Germantown Hospital
Acute Care Hospitals · Germantown, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20876 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GERMANTOWN, MD 20876
GERMANTOWN, MD 20876
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 Ann Li's NPI number?
The NPI number for Ann Li is 1578423570. It was assigned to this individual provider in the NPPES registry on November 13, 2025.
Where is Ann Li located?
Ann Li practices at 19801 Observation Dr, Germantown, MD 20876. The listed phone number is (301) 557-6000.
What is Ann Li's specialty?
The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.
Is Ann Li enrolled in Medicare?
Yes. Ann Li 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.
Is Ann Li affiliated with any hospitals?
According to CMS data, Ann Li is affiliated with Holy Cross Germantown Hospital.
When was this NPI record last updated?
The NPPES record for Ann Li was last updated on March 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Ann Li · NPI 1578423570
Physician Assistant physician in Germantown, Maryland. Individual provider, active in the CMS NPPES registry since November 13, 2025.
## Identity
- **NPI:** 1578423570 (Entity type: Individual)
- **Enumerated:** November 13, 2025
- **Primary specialty:** Physician Assistant · taxonomy 363A00000X
- **State license:** C0010194 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 19801 OBSERVATION DR, Germantown, MD 20876-4070
- **Phone:** (301) 557-6000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** Other, class of 2025
## Record status
- **NPPES last updated:** March 31, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1578423570) · Data from the CMS NPPES public registry.