Merrick Tan, MD
NPI 1154825156 · Anesthesiology Physician · Oakland, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Merrick Tan, MD is a Anesthesiology Physician provider in Oakland, CA (NPI 1154825156).
Provider details
- NPI number
- 1154825156
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A165891 (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
8 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
- 2018-03-23
- Last updated
- 2023-10-14
- Certified
- 2023-10-14
Frequently asked questions
- What is Merrick Tan's NPI number?
- Merrick Tan's National Provider Identifier (NPI) is 1154825156, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Merrick Tan's specialty?
- Merrick Tan is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Merrick Tan located?
- Merrick Tan's practice location on file with NPPES is 3600 Broadway, Oakland, CA 94611-5730.
- What is Merrick Tan's phone number?
- The practice phone number listed in the NPPES registry for Merrick Tan is (510) 406-3759.
- Does Merrick Tan accept Medicare?
- Merrick Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Merrick Tan's NPI active?
- Yes — Merrick Tan's NPI (1154825156) is active in the NPPES registry as of the last update on 2023-10-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.