John Hirshleifer, M.D
NPI 1407893621 · Internal Medicine Physician · Oakland, CA
John Hirshleifer, M.D is a Internal Medicine Physician provider in Oakland, CA (NPI 1407893621).
Provider details
- NPI number
- 1407893621
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- Yes
- License
- G32352 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2006-05-31
- Last updated
- 2016-09-29
Frequently asked questions
- What is John Hirshleifer's NPI number?
- John Hirshleifer's National Provider Identifier (NPI) is 1407893621, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Hirshleifer's specialty?
- John Hirshleifer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Hirshleifer located?
- John Hirshleifer's practice location on file with NPPES is 1221 Broadway, Oakland, CA 94612-1837.
- What is John Hirshleifer's phone number?
- The practice phone number listed in the NPPES registry for John Hirshleifer is (510) 662-5894.
- Is John Hirshleifer's NPI active?
- Yes — John Hirshleifer's NPI (1407893621) is active in the NPPES registry as of the last update on 2016-09-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.