Christina Tan, MD
NPI 1245421254 · Pediatrics Physician · San Mateo, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christina Tan, MD is a Pediatrics Physician provider in San Mateo, CA (NPI 1245421254).
Provider details
- NPI number
- 1245421254
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G739220 (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
18 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
- 2007-08-05
- Last updated
- 2023-03-07
- Certified
- 2020-06-19
Frequently asked questions
- What is Christina Tan's NPI number?
- Christina Tan's National Provider Identifier (NPI) is 1245421254, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christina Tan's specialty?
- Christina Tan is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Christina Tan located?
- Christina Tan's practice location on file with NPPES is 123 S San Mateo Dr, San Mateo, CA 94401-3804.
- What is Christina Tan's phone number?
- The practice phone number listed in the NPPES registry for Christina Tan is (650) 343-4200.
- Does Christina Tan accept Medicare?
- Christina Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christina Tan's NPI active?
- Yes — Christina Tan's NPI (1245421254) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.