Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1093234056 Individual Practitioner Male Practitioner

James David Garrett Simpson

Social Worker • Fairfield, CA

Professional Overview & Biography Verified Profile Summary

James Simpson is a registered healthcare professional specializing in Social Worker in Fairfield, CA. Practice services are available at 275 BECK AVE under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

275 Beck Ave

Fairfield, CA 945336804

Telephone 5555555555
Associated Practice Facility / Clinic

Specialty Benchmarks & Practice Insights

Comparative analytics for Social Worker in Fairfield, CA

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 14.1 Yrs
State Avg: 16.2 Yrs
Regional Practice Density
107 Specialists

Practicing in Fairfield, CA (10507 Statewide)

Telehealth Adoption Rate
0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Medical Specialties & State Licenses

CMS Verified: 2026-08-04
Social Worker Primary Specialty

NUCC Taxonomy Code: 104100000X

State License CA 138161

A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

40 Associated Practitioners
Neema Modi

Pharmacist

NPI 1003085010
Timothy Freriks

Registered Nurse - Critical Care Medicine

NPI 1003788894
Simon Gensterblum

Social Worker - Clinical

NPI 1023793254
Breanna Mease

Community Health Worker

NPI 1033701966
Mallory Soto , FNP-C

Family Medicine

NPI 1033855978

Family Nurse Practitioner (Certified)

Kyante Britton

Behavior Technician

NPI 1033998992

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

19 Historical Events
📍
Updated Practice Location August 04, 2026

Registered at 275 BECK AVE, FAIRFIELD, CA 945336804 (Tel: 5555555555)

📍
Updated Business Mailing Address August 04, 2026

Registered at 275 BECK AVE, FAIRFIELD, CA 945336804 (Tel: 5555555555)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) August 04, 2026

Social Worker (License #138161 in CA)

📍
Updated Practice Location June 05, 2026

Registered at 7171 BOWLING DR STE 300, SACRAMENTO, CA 958232043 (Tel: 9162706994)

📍
Updated Business Mailing Address June 05, 2026

Registered at 7171 BOWLING DR STE 300, SACRAMENTO, CA 958232043 (Tel: 9168755881)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) June 05, 2026

Social Worker (License #138161 in CA)

📍
Updated Practice Location June 23, 2023

Registered at 7001A EAST PKWY, SACRAMENTO, CA 958232501 (Tel: 9168755881)

📍
Updated Business Mailing Address June 23, 2023

Registered at 7001A EAST PKWY, SACRAMENTO, CA 958232501 (Tel: 9168755881)

👤
Provider Name / Credentials Updated June 23, 2023

Recorded as JAMES SIMPSON

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) June 23, 2023

Social Worker (License #105260 in CA)

📍
Updated Business Mailing Address January 05, 2022

Registered at PO BOX 99, MARIPOSA, CA 953380099 (Tel: 2099662000)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) January 05, 2022

Case Manager/Care Coordinator

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) August 24, 2021

Student in an Organized Health Care Education/Training Program

NPI Profile Active September 11, 2017

NPI status registered as active in NPPES database

📍
Updated Practice Location September 11, 2017

Registered at 5362 LEMEE LN, MARIPOSA, CA 953389556 (Tel: (209) 966-2000)

📍
Updated Business Mailing Address September 11, 2017

Registered at 5362 LEMEE LN, MARIPOSA, CA 953389556 (Tel: 2099662000)

👤
Provider Name / Credentials Updated September 11, 2017

Recorded as JAMES DAVID SIMPSON

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) September 11, 2017

Case Manager/Care Coordinator

🟢
Initial NPI Registration & Enumeration September 11, 2017

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1093234056
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: September 11, 2017
Last Update: August 04, 2026
Sole Proprietor: Yes

Mailing Address

275 Beck Ave

Fairfield, CA 945336804

Phone: 5555555555

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.