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DR. JESSICA ELAINE SIEMINSKI DO/MPH
NPI 1982455937
Student in an Organized Health Care Education/Training Program in Stockton, CA

Active since March 28, 2024PECOS EnrolledAccepts Medicare Assignment
1800 N CALIFORNIA ST, STOCKTON, CA 95204(209) 547-7146 Get Directions Write a Review

NPPES record last updated: July 12, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Jessica Elaine Sieminski Do/mph NPPES

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

DR. JESSICA ELAINE SIEMINSKI DO/MPH (NPI 1982455937) is an individual student in an organized health care education/training program in Stockton, California and active in the NPI registry since March 2024. She is enrolled in Medicare PECOS and is a graduate of Touro Un College Of Osteopathic Medicine, Vallejo (2024).

NPPES Registry Identity

NPI1982455937
Entity TypeIndividualFemale
Primary Taxonomy390200000X
Provider Legal NameDR. JESSICA ELAINE SIEMINSKICredential: DO/MPH
Location Address1800 N CALIFORNIA STStockton, CA 95204-6019
Mailing Address1800 N California StStockton, CA 95204-6019 · (209) 547-7146
Phone(209) 547-7146
Sole ProprietorNo
Medical School CMSTouro Un College Of Osteopathic Medicine, VallejoGraduated 2024
Enumeration DateMarch 28, 2024
Last NPPES UpdateJuly 12, 2026
NPPES CertifiedJuly 12, 2026
✔ NPI 1982455937 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyStudent in an Organized Health Care Education/Training ProgramStudent, Health Care
Taxonomy Code390200000X
Definition
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Also ListedEmergency MedicineTaxonomy 207P00000X · License 20A24620 (CA)
1800 N CALIFORNIA ST, Stockton, CA 95204
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Jessica Elaine Sieminski Do/mph is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3476024126
PECOS Enrollment IDI20260604000070
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Jessica Sieminski reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Cep America - California
5.8 mi
Emergency Medicine
500 W HOSPITAL RD
French Camp, CA 95231
  • Reassigned Medicare billing, California enrollment
  • 2,323 clinicians in this Medicare group
NPI 1467863290 (209) 468-6000
San Joaquin Emergency Medical Associates
63 mi
Emergency Medicine
333 MERCY AVE
Merced, CA 95340
  • Reassigned Medicare billing, California enrollment
  • 141 clinicians in this Medicare group
NPI 1588960413 (844) 474-4019

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

Other Providers at the Same Location NPPES 20

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

DEEPAK GIR MD
Student in an Organized Health Care Education/Training Program
1800 N CALIFORNIA ST
STOCKTON, CA 95204
San Joaquin County (209) 547-7177
PRIYADEEP KANG MD
Student in an Organized Health Care Education/Training Program
1800 N CALIFORNIA ST
STOCKTON, CA 95204
San Joaquin County (209) 547-7181
NANCY THI NGUYEN CF-SLP
Speech-Language Pathologist
1800 N CALIFORNIA ST
STOCKTON, CA 95204
San Joaquin County (209) 943-2000
DR. VALERIE DEJESUS MD
Anesthesiology
1800 N CALIFORNIA ST
STOCKTON, CA 95204
San Joaquin County (209) 547-5716
LARRY GEORGE OTTERSTETTER DO
Student in an Organized Health Care Education/Training Program
1800 N CALIFORNIA ST
STOCKTON, CA 95204
San Joaquin County (209) 547-7181
SHUBHPREET KAUR SOHAL
Nurse Practitioner (Family)
1800 N CALIFORNIA ST
STOCKTON, CA 95204
San Joaquin County (209) 466-0456
RONLI LEVI RD
Dietitian, Registered
1800 N CALIFORNIA ST
STOCKTON, CA 95204
San Joaquin County (209) 467-5356
JOSEPH HOWARD HOFFMAN DO
Emergency Medicine
1800 N CALIFORNIA ST
STOCKTON, CA 95204
San Joaquin County (209) 943-2000

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 Jessica Sieminski's NPI number?

The NPI number for Jessica Sieminski is 1982455937. It was assigned to this individual provider in the NPPES registry on March 28, 2024.

Where is Jessica Sieminski located?

Jessica Sieminski practices at 1800 N California St, Stockton, CA 95204. The listed phone number is (209) 547-7146.

What is Jessica Sieminski's specialty?

The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.

Is Jessica Sieminski enrolled in Medicare?

Yes. Jessica Sieminski is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Jessica Sieminski's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jessica Sieminski reassigns Medicare benefits to 2 organizations: Cep America - California (French Camp, CA) and San Joaquin Emergency Medical Associates (Merced, CA). Each 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 Jessica Sieminski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Jessica Sieminski was last updated on July 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.