WILLIAM E. PROBST MD
NPI 1407934391
Obstetrics & Gynecology in Tracy, CA

Q: What is William Probst's NPI number?

The NPI number for William Probst is 1407934391. It was assigned to this individual provider in the NPPES registry on November 1, 2006.

Q: What is William Probst's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Q: When was this NPI record last updated?

The NPPES record for William Probst was last updated on December 2, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since November 01, 2006PECOS Enrolled

2185 W GRANT LINE RD, TRACY, CA 95377(209) 839-3200 Get Directions Write a Review

NPPES record last updated: December 2, 2021. Verified against the NPPES registry weekly; last sync: August 09, 2026.

On this page

About William E. Probst Md NPPES

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

WILLIAM E. PROBST MD (NPI 1407934391) is an individual obstetrics & gynecology provider in Tracy, California, licensed in California (G75094) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1407934391

Entity TypeIndividualMale

Primary Taxonomy207V00000X

Provider Legal NameWILLIAM E. PROBSTCredential: MD

Location Address2185 W GRANT LINE RDTracy, CA 95377-7309

Mailing Address1800 Harrison St Fl 7Oakland, CA 94612-3466 · (510) 625-6262

Phone(209) 839-3200

Sole ProprietorNo

Enumeration DateNovember 1, 2006

Last NPPES UpdateDecember 2, 2021

✔ NPI 1407934391 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

License✔ Licensed in CA · G75094

Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

2185 W GRANT LINE RD, Tracy, CA 95377

Open in Google Maps ↗

Other Identifiers 1

Medicaid00G750940CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William E. Probst Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95377 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

$133.94 typical visit price

range $58.87 – $176.60

Typical copayment $33.48 (range $14.71 – $44.15)

Most-billed visit code 99204

Established Patient

$73.16 typical visit price

range $19.28 – $144.60

Typical copayment $18.29 (range $4.82 – $36.15)

Most-billed visit code 99213

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.

ELENA GALLARDO COSTA NP

Nurse Practitioner