DR. JASON PHILLIP WILLIAMS M.D.
NPI 1598052953
Hospitalist in Los Angeles, CA

Q: What is Jason Williams's NPI number?

The NPI number for Jason Williams is 1598052953. It was assigned to this individual provider in the NPPES registry on July 6, 2011.

Q: What is Jason Williams's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Q: When was this NPI record last updated?

The NPPES record for Jason Williams was last updated on May 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.

Active since July 06, 2011PECOS Enrolled

757 WESTWOOD PLZ, SUITE 7501, LOS ANGELES, CA 90095(310) 319-4908 Get Directions Write a Review

NPPES record last updated: May 29, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 29, 2026, Feb 21, 2017 (2 updates tracked since 2017).

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About Dr. Jason Phillip Williams M.d. NPPES

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

DR. JASON PHILLIP WILLIAMS M.D. (NPI 1598052953) is an individual hospitalist provider in Los Angeles, California, licensed in Georgia (86490) and active in the NPI registry since July 2011. He is enrolled in Medicare PECOS and is a graduate of University Of California, Geffen School Of Medicine (2011).

NPPES Registry Identity

NPI1598052953

Entity TypeIndividualMale

Primary Taxonomy208M00000X

Provider Legal NameDR. JASON PHILLIP WILLIAMSCredential: M.D.

Location Address757 WESTWOOD PLZ, SUITE 7501Los Angeles, CA 90095-8358

Mailing Address757 Westwood Plz, Suite 7501Los Angeles, CA 90095-8358 · (310) 319-4698

Phone(310) 319-4908

Sole ProprietorNo

Medical School CMSUniversity Of California, Geffen School Of MedicineGraduated 2011

Enumeration DateJuly 6, 2011

Last NPPES UpdateMay 29, 20262 updates tracked since enumeration

NPPES CertifiedMay 29, 2026

✔ NPI 1598052953 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians

Taxonomy Code208M00000X

Licenses✔ Licensed in GA · 86490✔ Licensed in CA · A123159

Definition

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

757 WESTWOOD PLZ, Los Angeles, CA 90095

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Jason Phillip Williams M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9830313204

PECOS Enrollment IDI20260702004617

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 Reassignment

Medicare enrollment records show Jason Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Emory Specialty Associates, LLC

1,921 mi

Anesthesiology

303 SMITH ST
Lagrange, GA 30240

Reassigned Medicare billing, Georgia enrollment
1,506 clinicians in this Medicare group

NPI 1407864168 (404) 778-4888

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90095 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$142.39 typical visit price

range $62.96 – $187.60

Typical copayment $35.59 (range $15.74 – $46.90)

Most-billed visit code 99204

Established Patient

$109.96 typical visit price

range $20.84 – $153.61

Typical copayment $27.49 (range $5.21 – $38.40)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

CATHERINE CHA MD

Anesthesiology

757 WESTWOOD PLZ
LOS ANGELES, CA 90095

Los Angeles County (310) 825-8041

DR. TIFFANY PRUGPICHAILERS PEDIGO M.D.

Pediatrics

757 WESTWOOD PLZ, B711 RRUMC
LOS ANGELES, CA 90095

Los Angeles County (310) 267-9129

SAMRAWIT ABRAHA

Anesthesiology

757 WESTWOOD PLZ
LOS ANGELES, CA 90095

Los Angeles County (310) 267-6629

KEN DEKITANI

Internal Medicine

757 WESTWOOD PLZ
LOS ANGELES, CA 90095

Los Angeles County (310) 267-7849

JACQUELINE LABINS MD

Student in an Organized Health Care Education/Training Program

757 WESTWOOD PLZ
LOS ANGELES, CA 90095

Los Angeles County (310) 267-0903

JYODI DINESH MOHOLE MD

Student in an Organized Health Care Education/Training Program

757 WESTWOOD PLZ
LOS ANGELES, CA 90095

Los Angeles County (310) 267-9132

JASON THAMES HUYNH MD

Student in an Organized Health Care Education/Training Program

757 WESTWOOD PLZ
LOS ANGELES, CA 90095

Los Angeles County (310) 825-7375

BRITTANY CHY MD

Student in an Organized Health Care Education/Training Program

757 WESTWOOD PLZ
LOS ANGELES, CA 90095

Los Angeles County (310) 267-8655

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 Jason Williams's NPI number?

The NPI number for Jason Williams is 1598052953. It was assigned to this individual provider in the NPPES registry on July 6, 2011.

Where is Jason Williams located?

Jason Williams practices at 757 Westwood Plz Suite 7501, Los Angeles, CA 90095. The listed phone number is (310) 319-4908.

What is Jason Williams's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Jason Williams enrolled in Medicare?

Yes. Jason Williams is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Jason Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jason Williams reassigns Medicare benefits to Emory Specialty Associates, LLC (Lagrange, GA). The 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 Jason Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Jason Williams accept?

Health plans from Oscar Health list Jason Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Jason Williams was last updated on May 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.