IndividualActive
Jonathan Mahrer, PH.D.
NPI 1053341677 · Psychologist · Mill Valley, CA
Jonathan Mahrer, PH.D. is a Psychologist provider in Mill Valley, CA (NPI 1053341677).
Provider details
- NPI number
- 1053341677
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY 14351 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
61 Camino Alto Ste 106
Mill Valley, CA 94941-2910
Phone: (415) 567-7751
Fax: (866) 295-5532
Street-level locationGet directions
Mailing address
61 Camino Alto Ste 106
Mill Valley, CA 94941-2910
Registry dates
- Enumerated
- 2006-07-03
- Last updated
- 2012-04-18
Frequently asked questions
- What is Jonathan Mahrer's NPI number?
- Jonathan Mahrer's National Provider Identifier (NPI) is 1053341677, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Mahrer's specialty?
- Jonathan Mahrer is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Jonathan Mahrer located?
- Jonathan Mahrer's practice location on file with NPPES is 61 Camino Alto Ste 106, Mill Valley, CA 94941-2910.
- What is Jonathan Mahrer's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Mahrer is (415) 567-7751.
- Is Jonathan Mahrer's NPI active?
- Yes — Jonathan Mahrer's NPI (1053341677) is active in the NPPES registry as of the last update on 2012-04-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.