Mark Mcgregor
NPI 1881845386 · Clinical Social Worker · Colusa, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Mcgregor is a Clinical Social Worker provider in Colusa, CA (NPI 1881845386).
Provider details
- NPI number
- 1881845386
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-10-02
- Last updated
- 2017-03-16
Frequently asked questions
- What is Mark Mcgregor's NPI number?
- Mark Mcgregor's National Provider Identifier (NPI) is 1881845386, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Mcgregor's specialty?
- Mark Mcgregor is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mark Mcgregor located?
- Mark Mcgregor's practice location on file with NPPES is 162 E Carson St, Colusa, CA 95932-2866.
- What is Mark Mcgregor's phone number?
- The practice phone number listed in the NPPES registry for Mark Mcgregor is (530) 458-0520.
- Does Mark Mcgregor accept Medicare?
- Mark Mcgregor is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Mcgregor's NPI active?
- Yes — Mark Mcgregor's NPI (1881845386) is active in the NPPES registry as of the last update on 2017-03-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.