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MARK P. CLARK MD
NPI 1891874665
Internal Medicine in Glendale, CA

Active since November 03, 2006PECOS EnrolledAccepts Medicare Assignment
3746 FOOTHILL BLVD # B140, GLENDALE, CA 91214(310) 445-5999(323) 544-4248 Get Directions Write a Review

NPPES record last updated: November 18, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Mark P. Clark Md NPPES

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

MARK P. CLARK MD (NPI 1891874665) is an individual internal medicine provider in Glendale, California, licensed in California (G50527) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS and is a graduate of Loyola University Of Chicago, Stritch School Of Medicine (1982).

NPPES Registry Identity

NPI1891874665
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameMARK P. CLARKCredential: MD
Location Address3746 FOOTHILL BLVD # B140Glendale, CA 91214-1740
Mailing Address3746 Foothill Blvd # B140Glendale, CA 91214-1740 · (310) 445-5999 · Fax (323) 544-4248
Phone(310) 445-5999
Fax(323) 544-4248
Sole ProprietorNo
Medical School CMSLoyola University Of Chicago, Stritch School Of MedicineGraduated 1982
Enumeration DateNovember 3, 2006
Last NPPES UpdateNovember 18, 2025
NPPES CertifiedNovember 18, 2025
✔ NPI 1891874665 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · G50527
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedHospitalistTaxonomy 208M00000X · License G50527 (CA)
3746 FOOTHILL BLVD # B140, Glendale, CA 91214
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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 and accepts Medicare assignment

Mark P. Clark Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2163610205
PECOS Enrollment IDI20160323001860
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 91214 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 5

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

GERALD LANE SEARLE D.O.
General Practice
3746 FOOTHILL BLVD # B140
GLENDALE, CA 91214
Los Angeles County (310) 445-5999
DR. DANIEL KUANYU LEE M.D.
Internal Medicine
3746 FOOTHILL BLVD # B140
GLENDALE, CA 91214
Los Angeles County (310) 445-5999
BRIAN ALEXANDER FIGUEROA MD
Surgery
3746 FOOTHILL BLVD # B140
GLENDALE, CA 91214
Los Angeles County (310) 445-5999
DR. SHANICKA N SCARBROUGH M.D.
General Practice
3746 FOOTHILL BLVD # B140
GLENDALE, CA 91214
Los Angeles County (310) 445-5999
HAYDEN GABRIEL SCHULTZ MD
Surgery
3746 FOOTHILL BLVD # B140
GLENDALE, CA 91214
Los Angeles County (310) 445-5999

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 Clark's NPI number?

The NPI number for Mark Clark is 1891874665. It was assigned to this individual provider in the NPPES registry on November 3, 2006.

Where is Mark Clark located?

Mark Clark practices at 3746 Foothill Blvd # B140, Glendale, CA 91214. The listed phone number is (310) 445-5999.

What is Mark Clark's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Mark Clark enrolled in Medicare?

Yes. Mark Clark is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Mark Clark was last updated on November 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.