Jack Liu, MD
NPI 1821218843 · Emergency Medicine Physician · New York, NY
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jack Liu, MD is a Emergency Medicine Physician provider in New York, NY (NPI 1821218843).
Provider details
- NPI number
- 1821218843
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 243263-1 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES 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
Mailing address
Registry dates
- Enumerated
- 2007-05-01
- Last updated
- 2013-02-18
Frequently asked questions
- What is Jack Liu's NPI number?
- Jack Liu's National Provider Identifier (NPI) is 1821218843, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jack Liu's specialty?
- Jack Liu is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jack Liu located?
- Jack Liu's practice location on file with NPPES is 37 West 23rd Street, New York, NY 10010.
- What is Jack Liu's phone number?
- The practice phone number listed in the NPPES registry for Jack Liu is (646) 596-9267.
- Does Jack Liu accept Medicare?
- Jack Liu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jack Liu's NPI active?
- Yes — Jack Liu's NPI (1821218843) is active in the NPPES registry as of the last update on 2013-02-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.