JOHN VAUGHN SIEBEL M.D.
NPI 1780741306
Internal Medicine - Medical Oncology in San Mateo, CA

Active since January 02, 2007PECOS Enrolled
218 DE ANZA BLVD, SAN MATEO, CA 94402(650) 341-9131(650) 341-9135 Get Directions Write a Review

NPPES record last updated: November 7, 2018. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About John Vaughn Siebel M.d. NPPES

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

JOHN VAUGHN SIEBEL M.D. (NPI 1780741306) is an individual medical oncology provider in San Mateo, California, licensed in Idaho (M-13451) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1780741306
Entity TypeIndividualMale
Primary Taxonomy207RX0202X
Provider Legal NameJOHN VAUGHN SIEBELCredential: M.D.
Location Address218 DE ANZA BLVDSan Mateo, CA 94402-3913
Mailing Address2925 Debarr Rd 300Anchorage, AK 99508-2974 · (907) 279-3155 · Fax (907) 257-9856
Fax(650) 341-9135
Sole ProprietorNo
Enumeration DateJanuary 2, 2007
Last NPPES UpdateNovember 7, 2018
NPI 1780741306 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License Licensed in ID · M-13451
Definition
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
Also ListedInternal Medicine · Hematology & OncologyTaxonomy 207RH0003X · License G26383 (CA)
218 DE ANZA BLVD, San Mateo, CA 94402

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

John Vaughn Siebel M.d. 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 94402 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
$202.35 typical visit price
range $69.00 – $202.35
Typical copayment $50.58 (range $17.25 – $50.58)
Most-billed visit code 99205
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
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 17

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

Internal Medicine (Hematology & Oncology)
218 DE ANZA BLVD
SAN MATEO, CA 94402
Internal Medicine (Gastroenterology)
218 DE ANZA BLVD
SAN MATEO, CA 94402
Social Worker (Clinical)
218 DE ANZA BLVD
SAN MATEO, CA 94402
Internal Medicine (Hematology & Oncology)
218 DE ANZA BLVD
SAN MATEO, CA 94402
Nurse Practitioner (Family)
218 DE ANZA BLVD
SAN MATEO, CA 94402
Internal Medicine (Medical Oncology)
218 DE ANZA BLVD
SAN MATEO, CA 94402
Internal Medicine (Medical Oncology)
218 DE ANZA BLVD
SAN MATEO, CA 94402
Nurse Practitioner
218 DE ANZA BLVD
SAN MATEO, CA 94402

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 John Siebel's NPI number?

The NPI number for John Siebel is 1780741306. It was assigned to this individual provider in the NPPES registry on January 2, 2007.

Where is John Siebel located?

John Siebel practices at 218 De Anza Blvd, San Mateo, CA 94402. The listed phone number is (650) 341-9131.

What is John Siebel's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Is John Siebel enrolled in Medicare?

Yes. John Siebel is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for John Siebel was last updated on November 7, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.