Karen Hempel Naifeh, PHD
Psychologist · San Mateo, CA
Karen Hempel Naifeh, PHD is a psychologist with a practice address in San Mateo, California, and NPI 1427171453, issued on Apr 6, 2007. Check the license (California PSY14597, 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
- Karen Hempel Naifeh
- Credential
- PHD
- Primary taxonomy
- Psychologist 103T00000X
- License number
- PSY14597 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1 Baywood Ave, San Mateo, CA 94402
- Phone
- (650) 571-5212
- Enumerated
- Apr 6, 2007
- Record last updated
- Oct 20, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (650) 577-9505
- Medicare enrollment
- Enrolled (PECOS I20111202000258); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
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Verify Karen Hempel Naifeh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY14597Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Karen Hempel Naifeh among 7,304 psychologist records in California
Karen Hempel Naifeh, PHD is one of 7,304 psychologist records with a practice address in California. 6% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 18% of them.
- NPI issued2007 · 18% of these records are older, 64% newer
- In a Medicare fileNo · 6% of these records are
- In the CMS Doctors and Clinicians fileYes · 14% of these records are
- Graduated1993 · median 2005 among the 1,058 with a school on file
- Record last updated2011 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
40 psychologist records list a practice address in San Mateo
They are 40 of the 3,909 NPPES records with a practice address in San Mateo, and 7,304 psychologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 7,304 in California → Every provider in San Mateo → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Rose-Anne Donner, PH.DSan Mateo, CA 944021215027354
- Arnell Etherington, PH.D.San Mateo, CA 944021043336746
- Lorena Hernandez, PSYDSan Mateo, CA 944021841694056
- Laurie Leung, PH.D.San Mateo, CA 944021598957193
- Nancy Marx, PH.D.San Mateo, CA 944021700835923
- Caitlin Metcalf, PHDSan Mateo, CA 944021578025748
- Mi ParkSan Mateo, CA 944021013140268
- Renee Schneider, PH.D.San Mateo, CA 944021285904979
Common questions
What is Karen Hempel Naifeh, PHD's NPI number?
Karen Hempel Naifeh, PHD's National Provider Identifier (NPI) is 1427171453, issued on Apr 6, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Karen Hempel Naifeh, PHD located?
The NPPES record lists a practice address at 1 Baywood Ave, San Mateo, CA, 94402. Phone: (650) 571-5212. Providers update this record themselves, so call before visiting.
How can I verify Karen Hempel Naifeh, PHD's license?
NPPES lists California license number PSY14597, 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.