Rex Sagayaga
Mental Health Counselor · Castro Valley, CA
Rex Sagayaga is a mental health counselor with a practice address in Castro Valley, California, and NPI 1588839716, issued on Apr 29, 2008. 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
- Rex Sagayaga
- Primary taxonomy
- Mental Health Counselor 101YM0800X
- Practice location
- 5248 Crane Ave, Castro Valley, CA 94546
- Phone
- (510) 538-3060
- Enumerated
- Apr 29, 2008
- Record last updated
- May 8, 2008 (not updated in 18 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest mental health counselor records → All 28,617 in California → Look up another NPI →
Also registered at 5248 Crane Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alicia CardonaMental Health Counselor1134435118
- David Gordon, M.S.S.A.Counselor1124323811
- Marcus LoganCounselor1053577148
- Matthew MaleleCounselor1114246931
- Jeffery PittsMental Health Counselor1619202389
- Jessica SanchezCounselor1710111745
Verify Rex Sagayaga 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
Rex Sagayaga among 28,617 mental health counselor records in California
Rex Sagayaga is one of 28,617 mental health counselor records with a practice address in California. 1% 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 2008, is newer than 19% of them.
- NPI issued2008 · 19% of these records are older, 75% newer
- In a Medicare fileNo · 1% of these records are
- In the CMS Doctors and Clinicians fileNo · 3% of these records are
- Record last updated2008 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101YM0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 mental health counselor records list a practice address in Castro Valley
They are 19 of the 999 NPPES records with a practice address in Castro Valley, and 28,617 mental health counselor records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 28,617 in California → Every provider in Castro Valley → Mental Health Counselor nationwide →
The 8 mental health counselor records with the nearest ZIP codes
- Sophora AchesonCastro Valley, CA 945461649839770
- Johann BautistaCastro Valley, CA 945461235778028
- Alicia CardonaCastro Valley, CA 945461134435118
- Emily ChavezCastro Valley, CA 945461336618610
- James Kelly, PSY.D.Castro Valley, CA 945461710183892
- Jacqueline Klippenes, LMFTCastro Valley, CA 945461417213976
- Yvette Kumar, LMFTCastro Valley, CA 945461356772164
- Chris LeeCastro Valley, CA 945461043345507
Common questions
What is Rex Sagayaga's NPI number?
Rex Sagayaga's National Provider Identifier (NPI) is 1588839716, issued on Apr 29, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Rex Sagayaga located?
The NPPES record lists a practice address at 5248 Crane Ave, Castro Valley, CA, 94546. Phone: (510) 538-3060. Providers update this record themselves, so call before visiting.
How can I verify Rex Sagayaga'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.