Walker Gregory De Witt, LMFT
Marriage & Family Therapist · San Diego, CA
Walker Gregory De Witt, LMFT is a marriage & family therapist with a practice address in San Diego, California, and NPI 1578604732, issued on Feb 9, 2007. Check the license (California 78003, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Walker Gregory De Witt
- Credential
- LMFT
- Primary taxonomy
- Marriage & Family Therapist 106H00000X
- License number
- 78003 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11515 EL Camino Real Ste 100, San Diego, CA 92130
- Phone
- (858) 279-1223
- Enumerated
- Feb 9, 2007
- Record last updated
- Feb 21, 2025
- Medicare enrollment
- Enrolled (PECOS I20250227003381); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest marriage & family therapist records → All 59,889 in California → Look up another NPI →
Also registered at 11515 EL Camino Real Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Karen Alvarenga, LMFTMarriage & Family Therapist1720608516
- Christine Calix, PHD, LPClinical Psychologist1740226331
- Elizabeth Duvall, PSYDClinical Psychologist1093948119
- Laura Easler, LCSWClinical Social Worker1528645827
- Azad Matari, MDPsychiatry Physician1154929289
- Tara Mauro, D.O.Psychiatry Physician1962508903
Verify Walker Gregory De Witt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 78003Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Pacific Coast Psychiatric Associates IncSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Walker Gregory De Witt among 59,889 marriage & family therapist records in California
Walker Gregory De Witt, LMFT is one of 59,889 marriage & family therapist records with a practice address in California. 4% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 7% of them.
- NPI issued2007 · 7% of these records are older, 77% newer
- In a Medicare fileYes · 4% of these records are
- In the CMS Doctors and Clinicians fileYes · 8% of these records are
- Graduated2007 · median 2013 among the 4,574 with a school on file
- Record last updated2025 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 106H00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2,738 marriage & family therapist records list a practice address in San Diego
They are 2,738 of the 52,937 NPPES records with a practice address in San Diego, and 59,889 marriage & family therapist records in California.
All 59,889 in California → Every provider in San Diego → Marriage & Family Therapist nationwide →
The 8 marriage & family therapist records with the nearest ZIP codes
- George BlanternSan Diego, CA 921301326256652
- Christine Block, LMFTSan Diego, CA 921301942486121
- Helena Dow, LMFTSan Diego, CA 921301992807168
- Lorraine Lawrence, MFTSan Diego, CA 921301164462271
- Emily Lindley, LMFTSan Diego, CA 921301467509265
- Marjorie Morrison, MFTSan Diego, CA 921301962552570
- Ron Muchnick, MFT PH.D.San Diego, CA 921301184846040
- Sherri Muchnick, MFT PH.D.San Diego, CA 921301609098573
Common questions
What is Walker Gregory De Witt, LMFT's NPI number?
Walker Gregory De Witt, LMFT's National Provider Identifier (NPI) is 1578604732, issued on Feb 9, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Walker Gregory De Witt, LMFT located?
The NPPES record lists a practice address at 11515 EL Camino Real Ste 100, San Diego, CA, 92130. Phone: (858) 279-1223. Providers update this record themselves, so call before visiting.
How can I verify Walker Gregory De Witt, LMFT's license?
NPPES lists California license number 78003, 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. Medicare files from data.cms.gov. 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.