NPPES file of Aug 9, 2026

Ilka Louise De Gast, PSYD

Psychologist · Santa Rosa, CA

Ilka Louise De Gast, PSYD is a psychologist with a practice address in Santa Rosa, California, and NPI 1649576851, issued on Feb 4, 2011. Check the license (California PSY24409, 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.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1649576851
Name
Ilka Louise De Gast
Credential
PSYD
Primary taxonomy
Psychologist 103T00000X
License numbers
PSY24409 CA
PSB33686 CA
Self-reported in NPPES; status is on the state search
Practice location
3569 Round Barn Cir, Santa Rosa, CA 95403
Phone
(707) 547-2222
Enumerated
Feb 4, 2011
Record last updated
May 13, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(707) 527-0472
Medicare enrollment
Enrolled (PECOS I20140627000211); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest psychologist records → All 7,304 in California → Look up another NPI →

Also registered at 3569 Round Barn Cir

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Khuzeman Abbasi, MDFamily Medicine Physician1841979952
  2. Allison Bacon, M.D.Family Medicine Physician1720254584
  3. Irene Baluyut, MDPediatrics Physician1629281662
  4. Kalanete Baruch, NPNurse Practitioner1184958696
  5. Amanda Bemis, FNPFamily Nurse Practitioner1225817935
  6. Francesca Cecchini, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1093636748

Verify Ilka Louise De Gast in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license PSY24409    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

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Ilka Louise De Gast among 7,304 psychologist records in California

Ilka Louise De Gast, PSYD 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 2011, is newer than 50% of them.

  • NPI issued2011 · 50% of these records are older, 47% newer
  • In a Medicare fileNo · 6% of these records are
  • In the CMS Doctors and Clinicians fileYes · 14% of these records are
  • Graduated2007 · median 2005 among the 1,058 with a school on file
  • Record last updated2014 · 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).

92 psychologist records list a practice address in Santa Rosa

They are 92 of the 6,884 NPPES records with a practice address in Santa Rosa, 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 Santa Rosa → Psychologist nationwide →

The 8 psychologist records with the nearest ZIP codes

  1. Daniela Baker, PSYDSanta Rosa, CA 954031427112408
  2. Edward Biggs, EDDSanta Rosa, CA 954031093852758
  3. Maryellen Curran, PH.D.Santa Rosa, CA 954031528120342
  4. Veronica Decicco, PH.D.Santa Rosa, CA 954031366597346
  5. Jennifer Dragonette, PSY.D.Santa Rosa, CA 954031770644387
  6. Julie Fennimore, PSY.DSanta Rosa, CA 954031073670246
  7. Eva Gratzinger, PH.D.Santa Rosa, CA 954031194899047
  8. Kate Gustin, PHDSanta Rosa, CA 954031396803714

Common questions

What is Ilka Louise De Gast, PSYD's NPI number?

Ilka Louise De Gast, PSYD's National Provider Identifier (NPI) is 1649576851, issued on Feb 4, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Ilka Louise De Gast, PSYD located?

The NPPES record lists a practice address at 3569 Round Barn Cir, Santa Rosa, CA, 95403. Phone: (707) 547-2222. Providers update this record themselves, so call before visiting.

How can I verify Ilka Louise De Gast, PSYD's license?

NPPES lists California license number PSY24409, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.