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JENNIFER LEONIAK D.O., INC
NPI 1235510710
Internal Medicine - Infectious Disease in Turlock, CA

Active since June 10, 2015
920 DELBON AVE, TURLOCK, CA 95382(209) 208-0923(209) 748-4850 Get Directions Write a Review

NPPES record last updated: March 27, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Jennifer Leoniak D.o., Inc NPPES

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

JENNIFER LEONIAK D.O., INC (NPI 1235510710) is a healthcare organization registered as an infectious disease in Turlock, California and active in the NPI registry since June 2015. The organization lists Jamie Dole, Manger, as its authorized official.

NPPES Registry Identity

NPI1235510710
Entity TypeOrganization
Primary Taxonomy207RI0200X
Legal Business NameJENNIFER LEONIAK D.O., INC
Location Address920 DELBON AVETurlock, CA 95382-2019
Mailing AddressPo Box 4978Modesto, CA 95352-4978 · (209) 575-4575 · Fax (209) 575-4598
Phone(209) 208-0923
Fax(209) 748-4850
Organization SubpartNo
Authorized OfficialJamie DoleManger · (209) 575-4575
Enumeration DateJune 10, 2015
Last NPPES UpdateMarch 27, 2025
NPPES CertifiedMarch 27, 2025
✔ NPI 1235510710 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in CA · 13410
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
920 DELBON AVE, Turlock, CA 95382
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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 SINGLE 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)

Jennifer Leoniak D.o., Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Jennifer Leoniak D.O., Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Jennifer Leoniak, D.O., M.S.
Internal Medicine
NPI 1588808703
920 DELBON AVE
Turlock, CA 95382
(209) 208-0923
✔ PECOSSame address

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 Jennifer Leoniak D.O., Inc's NPI number?

The NPI number for Jennifer Leoniak D.O., Inc is 1235510710. It was assigned to this organization in the NPPES registry on June 10, 2015.

Where is Jennifer Leoniak D.O., Inc located?

Jennifer Leoniak D.O., Inc is located at 920 Delbon Ave, Turlock, CA 95382. The listed phone number is (209) 208-0923.

What is Jennifer Leoniak D.O., Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Jennifer Leoniak D.O., Inc enrolled in Medicare?

Yes. Jennifer Leoniak D.O., Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Jennifer Leoniak D.O., Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Jennifer Leoniak D.O., 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Jennifer Leoniak D.O., Inc was last updated on March 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.