Jason Warren, M.D.
NPI 1114279080 · Internal Medicine Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jason Warren, M.D. is a Internal Medicine Physician provider in Stanford, CA (NPI 1114279080).
Provider details
- NPI number
- 1114279080
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A117866 (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
13 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
- 2012-10-02
- Last updated
- 2021-12-08
Frequently asked questions
- What is Jason Warren's NPI number?
- Jason Warren's National Provider Identifier (NPI) is 1114279080, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jason Warren's specialty?
- Jason Warren is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jason Warren located?
- Jason Warren's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Jason Warren's phone number?
- The practice phone number listed in the NPPES registry for Jason Warren is (650) 723-4000.
- Does Jason Warren accept Medicare?
- Jason Warren is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jason Warren's NPI active?
- Yes — Jason Warren's NPI (1114279080) is active in the NPPES registry as of the last update on 2021-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.