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Robert Spears, M.D.
NPI 1578572897 · Anesthesiology Physician · Fremont, CA
Robert Spears, M.D. is a Anesthesiology Physician provider in Fremont, CA (NPI 1578572897).
Provider details
- NPI number
- 1578572897
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G65777 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
2000 Mowry Ave
Fremont, CA 94538-1716
Phone: (510) 797-1111
Street-level locationGet directions
Mailing address
Po Box V
Mountain View, CA 94040-0150
Registry dates
- Enumerated
- 2006-08-05
- Last updated
- 2008-05-29
Frequently asked questions
- What is Robert Spears's NPI number?
- Robert Spears's National Provider Identifier (NPI) is 1578572897, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Spears's specialty?
- Robert Spears is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Spears located?
- Robert Spears's practice location on file with NPPES is 2000 Mowry Ave, Fremont, CA 94538-1716.
- What is Robert Spears's phone number?
- The practice phone number listed in the NPPES registry for Robert Spears is (510) 797-1111.
- Is Robert Spears's NPI active?
- Yes — Robert Spears's NPI (1578572897) is active in the NPPES registry as of the last update on 2008-05-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.