DR. MARK HARRISON SHOWEN M.D.
NPI 1477576817
Pediatrics in San Mateo, CA

Q: What is Mark Showen's NPI number?

The NPI number for Mark Showen is 1477576817. It was assigned to this individual provider in the NPPES registry on July 26, 2006.

Q: What is Mark Showen's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Q: When was this NPI record last updated?

The NPPES record for Mark Showen was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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 July 26, 2006PECOS Enrolled

50 S SAN MATEO DR, SUITE 180, SAN MATEO, CA 94401(650) 342-4145(650) 342-2070 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. Mark Harrison Showen M.d. NPPES

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

DR. MARK HARRISON SHOWEN M.D. (NPI 1477576817) is an individual pediatrics provider in San Mateo, California, licensed in California (G052160) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1477576817

Entity TypeIndividualMale

Primary Taxonomy208000000X

Provider Legal NameDR. MARK HARRISON SHOWENCredential: M.D.

Location Address50 S SAN MATEO DR, SUITE 180San Mateo, CA 94401-3857

Mailing Address50 S San Mateo Dr, Suite 180San Mateo, CA 94401-3857 · (650) 342-4145 · Fax (650) 342-2070

Phone(650) 342-4145

Fax(650) 342-2070

Sole ProprietorNo

Enumeration DateJuly 26, 2006

Last NPPES UpdateJuly 8, 2007

✔ NPI 1477576817 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

License✔ Licensed in CA · G052160

Definition

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

50 S SAN MATEO DR, San Mateo, CA 94401

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mark Harrison Showen 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 94401 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

$104.51 typical visit price

range $69.00 – $202.35

Typical copayment $26.12 (range $17.25 – $50.58)

Most-billed visit code 99203

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 20

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

SOMYA JALAN MD

Pediatrics

50 S SAN MATEO DR
SAN MATEO, CA 94401

San Mateo County (650) 652-8353

DR. STEPHEN BUCHNER MD

Pediatrics

50 S SAN MATEO DR, STE 180
SAN MATEO, CA 94401

San Mateo County (650) 342-4145

DR. GEORGE WILLIAM SHORAGO M.D.

Otolaryngology

50 S SAN MATEO DR, SUITE 320
SAN MATEO, CA 94401

San Mateo County (650) 340-7200

JULIAN HARDY MCLAIN MD

Internal Medicine (Hematology & Oncology)

50 S SAN MATEO DR
SAN MATEO, CA 94401

San Mateo County (650) 696-5420

HOWARD K CHOW MD

Pediatrics

50 S SAN MATEO DR, SUITE 260
SAN MATEO, CA 94401

San Mateo County (650) 579-6500

DENISE MARY ROS

Physician Assistant

50 S SAN MATEO DR
SAN MATEO, CA 94401

San Mateo County (650) 652-8788

JEANNE V BEYMER MD

Pediatrics

50 S SAN MATEO DR, STE 260
SAN MATEO, CA 94401

San Mateo County (650) 579-6500

DR. JOHN ROBERT GRIFFIN M.D.

Surgery (Plastic and Reconstructive Surgery)

50 S SAN MATEO DR, STE 470
SAN MATEO, CA 94401

San Mateo County (650) 652-8239

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 Mark Showen's NPI number?

The NPI number for Mark Showen is 1477576817. It was assigned to this individual provider in the NPPES registry on July 26, 2006.

Where is Mark Showen located?

Mark Showen practices at 50 S San Mateo Dr Suite 180, San Mateo, CA 94401. The listed phone number is (650) 342-4145.

What is Mark Showen's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Mark Showen enrolled in Medicare?

Yes. Mark Showen is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mark Showen was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.