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STEPHEN C WALKER MD
NPI 1518989805
Obstetrics & Gynecology in Monterey, CA

Active since July 24, 2006PECOS Enrolled
337 EL DORADO ST, SUITE B4, MONTEREY, CA 93940(831) 373-2486(831) 373-6519 Get Directions Write a Review

NPPES record last updated: March 7, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Stephen C Walker Md NPPES

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

STEPHEN C WALKER MD (NPI 1518989805) is an individual obstetrics & gynecology provider in Monterey, California, licensed in California (G34927) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1518989805
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameSTEPHEN C WALKERCredential: MD
Location Address337 EL DORADO ST, SUITE B4Monterey, CA 93940-4647
Mailing Address337 El Dorado St, Suite B4Monterey, CA 93940-4647 · (831) 373-2486 · Fax (831) 373-6519
Phone(831) 373-2486
Fax(831) 373-6519
Sole ProprietorNo
Enumeration DateJuly 24, 2006
Last NPPES UpdateMarch 7, 2023
✔ NPI 1518989805 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 · G34927
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.
337 EL DORADO ST, Monterey, CA 93940
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Other Identifiers 1

Medicaid00G349270CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Stephen C Walker 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.

Medicare Billing Reassignment

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

Obhg California, P.C.
2,210 mi
Obstetrics & Gynecology
777 LOWNDES HILL RD BLDG 1
Greenville, SC 29607
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Obhg California PC
  • 711 clinicians in this Medicare group
NPI 1215258892 (800) 967-2289

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 93940 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
$139.84 typical visit price
range $61.69 – $184.30
Typical copayment $34.96 (range $15.42 – $46.07)
Most-billed visit code 99204
Established Patient
$76.53 typical visit price
range $20.34 – $151.02
Typical copayment $19.13 (range $5.08 – $37.75)
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 16

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

JOHN H STEEL D.D.S.
Dentist (Oral and Maxillofacial Surgery)
337 EL DORADO ST, SUITE 3A
MONTEREY, CA 93940
Monterey County (831) 373-2967
THOMAS E ZEWERT MD
Plastic Surgery
337 EL DORADO ST, A-1
MONTEREY, CA 93940
Monterey County (831) 644-9800
MICHAEL K LEWIS D.D.S.
Dentist (Oral and Maxillofacial Surgery)
337 EL DORADO ST, SUITE 3A
MONTEREY, CA 93940
Monterey County (831) 373-2967
DR. BRADLEY J KEITH MD
Obstetrics & Gynecology
337 EL DORADO ST, STE A3
MONTEREY, CA 93940
Monterey County (831) 649-4202
SUNDERPAL S DAIL, DDS, INC
Dentist (Prosthodontics)
337 EL DORADO ST, B-2
MONTEREY, CA 93940
Monterey County (831) 373-2055
DR. WILLIAM C VOGELPOHL MD
Obstetrics & Gynecology
337 EL DORADO ST, STE A3
MONTEREY, CA 93940
Monterey County (831) 649-4202
DR. SUNDERPAL SINGH DAIL DDS
Dentist (Prosthodontics)
337 EL DORADO ST, SUITE B-2
MONTEREY, CA 93940
Monterey County (831) 373-2055
WILLIAM C VOGELPOHL MD AND BRADLEY J KEITH MD INC
Obstetrics & Gynecology
337 EL DORADO ST, SUITE A3
MONTEREY, CA 93940
Monterey County (831) 649-4202

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 Stephen Walker's NPI number?

The NPI number for Stephen Walker is 1518989805. It was assigned to this individual provider in the NPPES registry on July 24, 2006.

Where is Stephen Walker located?

Stephen Walker practices at 337 El Dorado St Suite B4, Monterey, CA 93940. The listed phone number is (831) 373-2486.

What is Stephen Walker's specialty?

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

Is Stephen Walker enrolled in Medicare?

Yes. Stephen Walker is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Stephen Walker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Walker reassigns Medicare benefits to Obhg California, P.C. (Greenville, SC). 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 Stephen Walker'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 Stephen Walker was last updated on March 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.