DR. GREGORY M SIMS PHD
NPI 1114067618
Psychologist - Counseling in Philo, CA

Active since February 07, 2007
18025 BLATTNER ROAD, PHILO, CA 95466(707) 895-2304(707) 895-2537 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Gregory M Sims Phd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GREGORY M SIMS PHD (NPI 1114067618) is an individual counseling provider in Philo, California, licensed in California (PSY4045) and active in the NPI registry since February 2007.

NPPES Registry Identity

NPI1114067618
Entity TypeIndividualMale
Primary Taxonomy103TC1900X
Provider Legal NameDR. GREGORY M SIMSCredential: PHD
Location Address18025 BLATTNER ROADPhilo, CA 95466
Mailing AddressPo Box 1Boonville, CA 95415 · (707) 895-2304 · Fax (707) 895-2537
Fax(707) 895-2537
Sole ProprietorNo
Enumeration DateFebruary 7, 2007
Last NPPES UpdateSeptember 11, 2025
NPI 1114067618 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

Primary SpecialtyPsychologist · CounselingBehavioral Health & Social Service Providers
Taxonomy Code103TC1900X
License Licensed in CA · PSY4045
Definition
A psychologist who specializes in general practice and health service. It focuses on how people function both personally and in their relationships at all ages. Counseling psychology addresses the emotional, social, work, school and physical health concerns people may have at different stages in their lives, focusing on typical life stresses and more severe issues with which people may struggle as individuals and as a part of families, groups and organizations. Counseling psychologists help people with physical, emotional and mental health issues improve their sense of well-being, alleviate feelings of distress and resolve crises. They also provide assessment, diagnosis, and treatment of more severe psychological symptoms.
Also ListedPsychologistTaxonomy 103T00000X · License CA LIC NO PSY4045 (CA)
Also ListedPsychologist · ClinicalTaxonomy 103TC0700X · License PSY4045 (CA)
18025 BLATTNER ROAD, Philo, CA 95466

Other Names 1

Former Name (1)Dr. Gregory Knox Sims

Other Identifiers 1

Medicaid00PL40451CA

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gregory Sims's NPI number?

The NPI number for Gregory Sims is 1114067618. It was assigned to this individual provider in the NPPES registry on February 7, 2007. The provider is also known as Dr. Gregory Knox Sims.

Where is Gregory Sims located?

Gregory Sims practices at 18025 Blattner Road, Philo, CA 95466. The listed phone number is (707) 895-2304.

What is Gregory Sims's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Counseling, with taxonomy code 103TC1900X.

When was this NPI record last updated?

The NPPES record for Gregory Sims was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.