Grace Gu, M.D
NPI 1114454899 · Addiction Medicine (Family Medicine) Physician · New York, NY
Enrolled with Medicare as Practitioner - Addiction Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grace Gu, M.D is a Addiction Medicine (Family Medicine) Physician provider in New York, NY (NPI 1114454899).
Provider details
- NPI number
- 1114454899
- Entity type
- Individual
- Primary specialty
- Addiction Medicine (Family Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Female
- Sole proprietor
- No
- License
- 307602 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 23621 Main StCarson, CA 90745-5743Phone: (310) 513-6707
Registry dates
- Enumerated
- 2017-05-12
- Last updated
- 2023-10-30
- Certified
- 2023-10-30
Frequently asked questions
- What is Grace Gu's NPI number?
- Grace Gu's National Provider Identifier (NPI) is 1114454899, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grace Gu's specialty?
- Grace Gu is listed in the NPPES registry with a primary specialty of Addiction Medicine (Family Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Grace Gu located?
- Grace Gu's practice location on file with NPPES is 45 Rivington St, New York, NY 10002-1304.
- What is Grace Gu's phone number?
- The practice phone number listed in the NPPES registry for Grace Gu is (332) 243-1000.
- Does Grace Gu accept Medicare?
- Grace Gu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grace Gu's NPI active?
- Yes — Grace Gu's NPI (1114454899) is active in the NPPES registry as of the last update on 2023-10-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.