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SIERRA EMERGENCY MEDICAL GROUP INC.
NPI 1871732933
Emergency Medicine in Sonora, CA

Active since February 13, 2009
1000 GREENLEY RD, SONORA, CA 95370(209) 263-0803(209) 532-3216 Get Directions Write a Review

NPPES record last updated: February 21, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Sierra Emergency Medical Group Inc. NPPES

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

SIERRA EMERGENCY MEDICAL GROUP INC. (NPI 1871732933) is a healthcare organization registered as an emergency medicine in Sonora, California and active in the NPI registry since February 2009. The organization lists Stephanie F Stuart, President, as its authorized official.

NPPES Registry Identity

NPI1871732933
Entity TypeOrganization
Primary Taxonomy207P00000X
Legal Business NameSIERRA EMERGENCY MEDICAL GROUP INC.
Location Address1000 GREENLEY RDSonora, CA 95370-5200
Mailing AddressPo Box 4685Sonora, CA 95370-1685 · (209) 263-0803 · Fax (209) 532-3216
Phone(209) 263-0803
Fax(209) 532-3216
Organization SubpartNo
Authorized OfficialStephanie F StuartPresident · (209) 532-1326
Enumeration DateFebruary 13, 2009
Last NPPES UpdateFebruary 21, 2018
✔ NPI 1871732933 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Also ListedEmergency Medical Technician, IntermediateTaxonomy 146M00000X
1000 GREENLEY RD, Sonora, CA 95370
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Sierra Emergency Medical Group Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

35

Medicare enrollment records show 35 clinicians reassign Medicare billing to Sierra Emergency Medical Group Inc., which bills Medicare for the services they deliver. Of these, 13 practice at this address and 18 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 2

Emergency Medicine26
Nurse Practitioner9

Nearest to this location (20)

See all 35
Donald Dudley, M.D.
Emergency Medicine
NPI 1497727952
1000 GREENLEY RD
Sonora, CA 95370
(209) 536-3460
✔ PECOSSame address
Steven Joye, DO
Emergency Medicine
NPI 1497916498
1000 GREENLEY RD
Sonora, CA 95370
(209) 532-5000
✔ PECOS✔ Accepts MedicareSame address
Mary Laughlin, NP
Nurse Practitioner
NPI 1760406607
1000 GREENLEY RD
Sonora, CA 95370
(209) 536-3460
✔ PECOS✔ Accepts MedicareSame address
Robert Lyons, M.D.
Emergency Medicine
NPI 1609846146
1000 GREENLEY RD.
Sonora, CA 95370
(209) 536-5000
✔ PECOSSame address
Melanie Patton
Nurse Practitioner
NPI 1295215630
1000 GREENLEY RD
Sonora, CA 95370
(209) 536-5000
✔ PECOS✔ Accepts MedicareSame address
Stephanie Stuart, M.D.
Emergency Medicine
NPI 1205094141
1000 GREENLEY RD DEPARTMENT OF EMERGENCY MEDICINE
Sonora, CA 95370
(209) 532-5000
✔ PECOS✔ Accepts MedicareSame address
Susan Zuniga
Nurse Practitioner
NPI 1952894883
1000 GREENLEY RD
Sonora, CA 95370
(209) 536-5000
✔ PECOS✔ Accepts MedicareSame address
Donald Klatt, M.D.
Emergency Medicine
NPI 1902878556
1000 GREENLEY RD
Sonora, CA 95370
(209) 536-3460
✔ PECOS✔ Accepts MedicareSame address
Ryan Pappal
Emergency Medicine
NPI 1578144986
1000 GREENLEY RD
Sonora, CA 95370
(209) 536-5000
✔ PECOS✔ Accepts MedicareSame address
Kelsey Callahan
Nurse Practitioner
NPI 1770288532
1000 GREENLEY RD
Sonora, CA 95370
(951) 294-0601
✔ PECOS✔ Accepts MedicareSame address
Daniel Tupy
Emergency Medicine
NPI 1730509134
1000 GREENLEY RD
Sonora, CA 95370
(209) 263-0803
✔ PECOS✔ Accepts MedicareSame address
Travis Wassermann, MD
Emergency Medicine
NPI 1518428994
1000 GREENLEY RD
Sonora, CA 95370
(209) 536-5000
✔ PECOS✔ Accepts MedicareSame address
William Wu, D.O.
Emergency Medicine
NPI 1558567826
1000 GREENLEY RD
Sonora, CA 95370
(209) 263-0803
✔ PECOSSame address
Deborah Goreham, FNP-C
Nurse Practitioner
NPI 1083014559
690 GUZZI LN STE C
Sonora, CA 95370
(209) 533-0333
✔ PECOS✔ Accepts Medicare0.1 mi
Krysta Wolken, NP-C
Nurse Practitioner
NPI 1073914347
900 GREENLEY RD STE 922
Sonora, CA 95370
(209) 536-3750
✔ PECOS✔ Accepts Medicare0.2 mi
Blake Cleveland, M.D.
Emergency Medicine
NPI 1124311253
39 N WASHINGTON ST
Sonora, CA 95370
(209) 532-1326
✔ PECOS✔ Accepts Medicare0.9 mi
Andrew Skokan, FNP
Nurse Practitioner
NPI 1245800416
13975 MONO WAY SUITE G
Sonora, CA 95370
(209) 533-9600
✔ PECOS✔ Accepts Medicare1.7 mi
Kimberly Freeman, M.D
Emergency Medicine
NPI 1801830070
18144 SECO ST
Jamestown, CA 95327
(209) 984-4820
✔ PECOS3.3 mi
Sarah Dunn, M.D.
Emergency Medicine
NPI 1215170956
1441 FLORIDA AVE
Modesto, CA 95350
(209) 578-1211
✔ PECOS✔ Accepts Medicare40 mi
Lisa Banke, NP
Nurse Practitioner
NPI 1275048159
6999 ARROYO RD
Livermore, CA 94550
(925) 784-9253
✔ PECOS80 mi
See all 35 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Emergency Medical Group Inc.'s NPI number?

The NPI number for Sierra Emergency Medical Group Inc. is 1871732933. It was assigned to this organization in the NPPES registry on February 13, 2009.

Where is Sierra Emergency Medical Group Inc. located?

Sierra Emergency Medical Group Inc. is located at 1000 Greenley Rd, Sonora, CA 95370. The listed phone number is (209) 263-0803.

What is Sierra Emergency Medical Group Inc.'s specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Sierra Emergency Medical Group Inc. enrolled in Medicare?

Yes. Sierra Emergency Medical Group Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Sierra Emergency Medical Group Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 35 clinicians in 2 Medicare specialties reassign their Medicare billing to Sierra Emergency Medical Group Inc.. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Emergency Medicine (26) and Nurse Practitioner (9). Of these, 13 practice at this address and 18 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Sierra Emergency Medical Group Inc. was last updated on February 21, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.