Larissa Tan, MD
NPI 1033280912 · Surgery Physician · Anaheim, CA
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Larissa Tan, MD is a Surgery Physician provider in Anaheim, CA (NPI 1033280912).
Provider details
- NPI number
- 1033280912
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G71354 (CA)
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
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
- 2006-11-13
- Last updated
- 2021-12-03
Frequently asked questions
- What is Larissa Tan's NPI number?
- Larissa Tan's National Provider Identifier (NPI) is 1033280912, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Larissa Tan's specialty?
- Larissa Tan is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Larissa Tan located?
- Larissa Tan's practice location on file with NPPES is 441 N Lakeview Ave, Anaheim, CA 92807-3028.
- What is Larissa Tan's phone number?
- The practice phone number listed in the NPPES registry for Larissa Tan is (888) 988-2800.
- Does Larissa Tan accept Medicare?
- Larissa Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Larissa Tan's NPI active?
- Yes — Larissa Tan's NPI (1033280912) is active in the NPPES registry as of the last update on 2021-12-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.