Mark Westley McGregor
Clinical Social Worker · Colusa, CA
Mark Westley McGregor is a clinical social worker with a practice address in Colusa, California, and NPI 1881845386, issued on Oct 2, 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
- Mark Westley McGregor
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- Practice location
- 162 E Carson St, Colusa, CA 95932
- Phone
- (530) 458-0520
- Enumerated
- Oct 2, 2008
- Record last updated
- Mar 16, 2017 (not updated in 9 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 36,261 in California → Look up another NPI →
Also registered at 162 E Carson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maira AcevesCase Manager/Care Coordinator1619608502
- Graciela AlvernazHealth Educator1538824032
- Haley AmundsonCase Manager/Care Coordinator1609554880
- Shaneen Bayless, MENTAL HEALTH WORKERMental Health Counselor1275661035
- Paul BilleciPeer Specialist1952060725
- Curtis Boewer, MFTIMarriage & Family Therapist1366638991
Verify Mark Westley McGregor 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
Mark Westley McGregor among 36,261 clinical social worker records in California
Mark Westley McGregor is one of 36,261 clinical social worker 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 2008, is newer than 24% of them.
- NPI issued2008 · 24% of these records are older, 72% newer
- In a Medicare fileNo · 6% of these records are
- In the CMS Doctors and Clinicians fileNo · 11% of these records are
- Record last updated2017 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 clinical social worker records list a practice address in Colusa
They are 8 of the 171 NPPES records with a practice address in Colusa, and 36,261 clinical social worker records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 36,261 in California → Every provider in Colusa → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Margaret Crahan, ACSWColusa, CA 959321508055955
- Angelica Gomez, MSWColusa, CA 959321699052373
- Ivan Martinez Gonzalez, LCSWColusa, CA 959321497250351
- Janet Morgan, LCSWColusa, CA 959321538270863
- Bessie Rojas, LCSWColusa, CA 959321518009646
- Brizia Tafolla Martinez, LCSWColusa, CA 959321134261183
- Gemma Velazquez, BAColusa, CA 959321659526275
- James Mace, D.S.W., L.C.S.WChico, CA 959291326105982
Common questions
What is Mark Westley McGregor's NPI number?
Mark Westley McGregor's National Provider Identifier (NPI) is 1881845386, issued on Oct 2, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Mark Westley McGregor located?
The NPPES record lists a practice address at 162 E Carson St, Colusa, CA, 95932. Phone: (530) 458-0520. Providers update this record themselves, so call before visiting.
How can I verify Mark Westley McGregor'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.