Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Cathleen Noel Bairey Merz, MD

Individual provider Cardiovascular Disease Physician · NPI 1447238324

Dr. Cathleen Noel Bairey Merz, MD is registered under Cardiovascular Disease (Cardiology) in Los Angeles, California. Graduated from Harvard Medical School in 1981, 45 years ago. Practices with Cedars-Sinai Medical Center, a 795-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
45
Trained at
Harvard Medical School
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

444 S San Vicente Blvd Ste 600
Los Angeles, CA 90048-4165 Not confirmed with CMS for 12 years — call before visiting
Phone: (310) 423-9680
Fax: (310) 423-9681
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence G49670 (CA)

Record details

NPI number1447238324
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 3, 2006
Last updated in NPPESAugust 12, 2014

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolHARVARD MEDICAL SCHOOL
Graduated 1981 (45 years in practice)
Group practice Cedars-Sinai Medical Center — 795 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients188
Services billed 315 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Cedars-Sinai Medical Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 795 clinicians in the practice; 12 are shown here.

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