Ronald Ruff, PH.D.
NPI 1487718235 · Clinical Neuropsychologist · San Francisco, CA
Ronald Ruff, PH.D. is a Clinical Neuropsychologist provider in San Francisco, CA (NPI 1487718235).
Provider details
- NPI number
- 1487718235
- Entity type
- Individual
- Primary specialty
- Clinical NeuropsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY 7059 (CA)
Specialties & taxonomies
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
- 2006-12-19
- Last updated
- 2007-07-08
Frequently asked questions
- What is Ronald Ruff's NPI number?
- Ronald Ruff's National Provider Identifier (NPI) is 1487718235, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ronald Ruff's specialty?
- Ronald Ruff is listed in the NPPES registry with a primary specialty of Clinical Neuropsychologist (Behavioral Health & Social Service Providers).
- Where is Ronald Ruff located?
- Ronald Ruff's practice location on file with NPPES is 909 Hyde St, San Francisco, CA 94109-4822.
- What is Ronald Ruff's phone number?
- The practice phone number listed in the NPPES registry for Ronald Ruff is (415) 771-7833.
- Is Ronald Ruff's NPI active?
- Yes — Ronald Ruff's NPI (1487718235) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.