What is Ann Li's NPI number?

Ann Li's National Provider Identifier (NPI) is 1578423570, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Ann Li's specialty?

Ann Li is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).

Where is Ann Li located?

Ann Li's practice location on file with NPPES is 19801 Observation Dr, Germantown, MD 20876-4070.

What is Ann Li's phone number?

The practice phone number listed in the NPPES registry for Ann Li is (301) 557-6000.

Is Ann Li's NPI active?

Yes — Ann Li's NPI (1578423570) is active in the NPPES registry as of the last update on 2026-03-31.

IndividualActive

Ann Li

NPI 1578423570 · Physician Assistant · Germantown, MD

Ann Li is a Physician Assistant provider in Germantown, MD (NPI 1578423570).

Provider details

NPI number: 1578423570
Entity type: Individual
Primary specialty: Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Sex: Female
Sole proprietor: No
License: C0010194 (MD)

Specialties & taxonomies

Physician AssistantPrimary363A00000XLicense C0010194 (MD)
Physician Assistants & Advanced Practice Nursing Providers

Profile Score

Established profile(53/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
Under 1 yr in registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

19801 Observation Dr

Germantown, MD 20876-4070

Phone: (301) 557-6000

Street-level locationGet directions

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Mailing address