Marilyn Ruth Friesen, PH.D.
Psychologist · San Diego, CA
Marilyn Ruth Friesen, PH.D. is a psychologist with a practice address in San Diego, California, and NPI 1699876540, issued on Sep 25, 2006. Check the license (California PSY8986, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Marilyn Ruth Friesen
- Credential
- PH.D.
- Primary taxonomy
- Psychologist 103T00000X
- License number
- PSY8986 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3111 Camino Del Rio N, San Diego, CA 92108
- Phone
- (619) 641-7090
- Enumerated
- Sep 25, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (619) 463-2463
- Medicaid ID
- PMOO8986 CA
- Entity
- Type 1 · individual
Also registered at 3111 Camino Del Rio N
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Marilyn Ruth Friesen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY8986Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Psychologist providers in California
There are 7,304 psychologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
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Common questions
What is Marilyn Ruth Friesen, PH.D.'s NPI number?
Marilyn Ruth Friesen, PH.D.'s National Provider Identifier (NPI) is 1699876540, issued on Sep 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marilyn Ruth Friesen, PH.D. located?
The NPPES record lists a practice address at 3111 Camino Del Rio N, San Diego, CA, 92108. Phone: (619) 641-7090. Providers update this record themselves, so call before visiting.
How can I verify Marilyn Ruth Friesen, PH.D.'s license?
NPPES lists California license number PSY8986, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.