Mark Sidney Castillo
Counselor · Greenfield, CA
Mark Sidney Castillo is a counselor with a practice address in Greenfield, California, and NPI 1184845786, issued on May 1, 2007. Check the license with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mark Sidney Castillo
- Primary taxonomy
- Counselor 101Y00000X
- Practice location
- 215 Huerta Ave, Greenfield, CA 93927
- Phone
- (831) 674-2180
- Enumerated
- May 1, 2007
- Record last updated
- Jun 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Also registered at 215 Huerta Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Eryne AlvaresCase Manager/Care Coordinator1629559406
- Ma Cindy Aquino, LVNLicensed Vocational Nurse1043684095
- David Dummar, MFT, LADCMarriage & Family Therapist1861693145
- Michelle Kane, CMT CAP RYTStudent in an Organized Health Care Education/Training Program1578136503
- Haley KirzyLicensed Vocational Nurse1437801446
- Ronald Mackenzie, LCSWClinical Social Worker1629227780
Verify Mark Sidney Castillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2 counselor records list a practice address in Greenfield
They are 2 of the 62 NPPES records with a practice address in Greenfield, and 13,723 counselor records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2 in Greenfield → All 13,723 in California → Every provider in Greenfield →
Other counselor records in California
- Brandi AagesonSan Diego, CA1316085426
- Ted AamesFort Bragg, CA1447500988
- Crystal AanderudRichmond, CA1083841761
- Cedric Aaron, MSW, ASWEureka, CA1245461268
- Regina AbadajosOakland, CA1851856488
- Erica AbaraCamarillo, CA1104099282
- Jennifer AbarcaOakland, CA1760955926
- Marina AbbottPetaluma, CA1669592184
- Robert Abbott-Florez, M.A.Petaluma, CA1568617280
- Sofia AbbushiSan Carlos, CA1154974301
Common questions
What is Mark Sidney Castillo's NPI number?
Mark Sidney Castillo's National Provider Identifier (NPI) is 1184845786, issued on May 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark Sidney Castillo located?
The NPPES record lists a practice address at 215 Huerta Ave, Greenfield, CA, 93927. Phone: (831) 674-2180. Providers update this record themselves, so call before visiting.
How can I verify Mark Sidney Castillo's license?
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.