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SIERRA OCCUPATIONAL SERVICES
NPI 1306990015
Preventive Medicine - Occupational Medicine in Stockton, CA

Active since January 22, 2007
1429 W FREMONT ST, STOCKTON, CA 95203(209) 546-7767(209) 546-7785 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Sep 11, 2025, Aug 22, 2020 (2 updates tracked since 2020).

About Sierra Occupational Services NPPES

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

SIERRA OCCUPATIONAL SERVICES (NPI 1306990015) is a healthcare organization registered as an occupational medicine in Stockton, California and active in the NPI registry since January 2007. The organization lists James Leonard Sepiol, Preident, as its authorized official.

NPPES Registry Identity

NPI1306990015
Entity TypeOrganization
Primary Taxonomy2083X0100X
Legal Business NameSIERRA OCCUPATIONAL SERVICES
Location Address1429 W FREMONT STStockton, CA 95203-2627
Mailing Address1429 W Fremont StStockton, CA 95203-2627 · (209) 546-7767 · Fax (209) 546-7785
Phone(209) 546-7767
Fax(209) 546-7785
Organization SubpartNo
Authorized OfficialJames Leonard SepiolPreident · (209) 546-7767
Enumeration DateJanuary 22, 2007
Last NPPES UpdateSeptember 11, 20252 updates tracked since enumeration
✔ NPI 1306990015 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPreventive Medicine · Occupational MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2083X0100X
Definition

Occupational medicine focuses on the health of workers, including the ability to perform work; the physical, chemical, biological, and social environments of the workplace; and the health outcomes of environmental exposures. Practitioners in this field address the promotion of health in the work place, and the prevention and management of occupational and environmental injury, illness, and disability.

Also ListedFamily MedicineTaxonomy 207Q00000X
1429 W FREMONT ST, Stockton, CA 95203
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X MULTIPLE SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES 14

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MATTHEW ALLEN
Physical Therapist
1429 W FREMONT ST
STOCKTON, CA 95203
San Joaquin County (732) 740-6815
RICHARD CRISP
Physical Therapist
1429 W FREMONT ST
STOCKTON, CA 95203
San Joaquin County (209) 546-0944
MRS. TYREINA BENISHA AMEY PTA
Physical Therapy Assistant
1429 W FREMONT ST
STOCKTON, CA 95203
San Joaquin County (209) 546-0944
ALLEN STRZELCZYK
Physical Therapist
1429 W FREMONT ST
STOCKTON, CA 95203
San Joaquin County (209) 546-7767
DR. KEVIN SCOTT DUNN PT, DPT
Physical Therapist
1429 W FREMONT ST
STOCKTON, CA 95203
San Joaquin County (510) 427-5706
DIANE SAMS PAUL NURSE PRACTITIONER
Nurse Practitioner (Family)
1429 W FREMONT ST
STOCKTON, CA 95203
San Joaquin County (209) 546-7764
OCCUPATIONAL HEALTH CENTERS OF CALIFORNIA, A MEDICAL CORPORATION
Clinic/Center (Occupational Medicine)
1429 W FREMONT ST
STOCKTON, CA 95203
San Joaquin County (209) 546-7767
U.S. HEALTHWORKS MEDICAL GROUP, PC
Clinic/Center (Urgent Care)
1429 W FREMONT ST
STOCKTON, CA 95203
San Joaquin County (209) 546-7767

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 Sierra Occupational Services's NPI number?

The NPI number for Sierra Occupational Services is 1306990015. It was assigned to this organization in the NPPES registry on January 22, 2007.

Where is Sierra Occupational Services located?

Sierra Occupational Services is located at 1429 W Fremont St, Stockton, CA 95203. The listed phone number is (209) 546-7767.

What is Sierra Occupational Services's specialty?

The primary specialty registered for this NPI is Preventive Medicine, specializing in Occupational Medicine, with taxonomy code 2083X0100X.

When was this NPI record last updated?

The NPPES record for Sierra Occupational Services was last updated on September 11, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.