John Lang, PHD
NPI 1588756704 · Clinical Neuropsychologist · San Francisco, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Lang, PHD is a Clinical Neuropsychologist provider in San Francisco, CA (NPI 1588756704).
Provider details
- NPI number
- 1588756704
- Entity type
- Individual
- Primary specialty
- Clinical NeuropsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY 20276 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2006-09-28
- Last updated
- 2013-05-03
Frequently asked questions
- What is John Lang's NPI number?
- John Lang's National Provider Identifier (NPI) is 1588756704, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Lang's specialty?
- John Lang is listed in the NPPES registry with a primary specialty of Clinical Neuropsychologist (Behavioral Health & Social Service Providers).
- Where is John Lang located?
- John Lang's practice location on file with NPPES is 4200 18th St, San Francisco, CA 94114-2470.
- What is John Lang's phone number?
- The practice phone number listed in the NPPES registry for John Lang is (415) 252-7522.
- Does John Lang accept Medicare?
- John Lang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Lang's NPI active?
- Yes — John Lang's NPI (1588756704) is active in the NPPES registry as of the last update on 2013-05-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.