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DR. MARY KATHLEEN MAZEL M.D.
NPI 1043416621
Pediatrics - Pediatric Critical Care Medicine in Chatsworth, CA

Active since June 21, 2007PECOS Enrolled
10606 JORDAN AVE, CHATSWORTH, CA 91311(310) 956-2078 Get Directions Write a Review

NPPES record last updated: April 2, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Mary Kathleen Mazel M.d. NPPES

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

DR. MARY KATHLEEN MAZEL M.D. (NPI 1043416621) is an individual pediatric critical care medicine provider in Chatsworth, California, licensed in California (A95634) and active in the NPI registry since June 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1043416621
Entity TypeIndividualFemale
Primary Taxonomy2080P0203X
Provider Legal NameDR. MARY KATHLEEN MAZELCredential: M.D.
Location Address10606 JORDAN AVEChatsworth, CA 91311-2133
Mailing Address10606 Jordan AveChatsworth, CA 91311-2133 · (818) 917-0534
Phone(310) 956-2078
Sole ProprietorNo
Enumeration DateJune 21, 2007
Last NPPES UpdateApril 2, 2015
✔ NPI 1043416621 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080P0203X
License✔ Licensed in CA · A95634
Definition
A pediatrician expert in advanced life support for children from the term or near-term neonate to the adolescent. This competence extends to the critical care management of life-threatening organ system failure from any cause in both medical and surgical patients and to the support of vital physiological functions. This specialist may have administrative responsibilities for intensive care units and also facilitates patient care among other specialists.
Also ListedPediatricsTaxonomy 208000000X · License A95634 (CA)
10606 JORDAN AVE, Chatsworth, CA 91311
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Other Identifiers 1

Medicare PINCA121409CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mary Kathleen Mazel 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.

Medicare Billing Reassignment

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

County Of Los Angeles
2.7 mi
Primary Care
20151 NORDHOFF ST
Chatsworth, CA 91311
  • Reassigned Medicare billing, California enrollment
  • 1,939 clinicians in this Medicare group
NPI 1306334222 (818) 407-3200

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Mary Mazel's NPI number?

The NPI number for Mary Mazel is 1043416621. It was assigned to this individual provider in the NPPES registry on June 21, 2007.

Where is Mary Mazel located?

Mary Mazel practices at 10606 Jordan Ave, Chatsworth, CA 91311. The listed phone number is (310) 956-2078.

What is Mary Mazel's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Critical Care Medicine, with taxonomy code 2080P0203X.

Is Mary Mazel enrolled in Medicare?

Yes. Mary Mazel is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mary Mazel's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Mazel reassigns Medicare benefits to County Of Los Angeles (Chatsworth, CA). 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 Mary Mazel'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 Mary Mazel was last updated on April 2, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.