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DR. CATHLEEN NOEL BAIREY MERZ M.D.
NPI 1447238324
Internal Medicine - Cardiovascular Disease in Los Angeles, CA

Active since January 03, 2006PECOS EnrolledAccepts Medicare Assignment
87.67/100
CMS Quality Rating
444 S SAN VICENTE BLVD, SUITE 600, LOS ANGELES, CA 90048(310) 423-9680(310) 423-9681 Get Directions Write a Review

NPPES record last updated: August 12, 2014. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Cathleen Noel Bairey Merz M.d. NPPES

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

DR. CATHLEEN NOEL BAIREY MERZ M.D. (NPI 1447238324) is an individual cardiovascular disease provider in Los Angeles, California, licensed in California (G49670) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS and is a graduate of Harvard Medical School (1981).

NPPES Registry Identity

NPI1447238324
Entity TypeIndividualFemale
Primary Taxonomy207RC0000X
Provider Legal NameDR. CATHLEEN NOEL BAIREY MERZCredential: M.D.
Location Address444 S SAN VICENTE BLVD, SUITE 600Los Angeles, CA 90048-4165
Mailing Address444 S San Vicente Boulevard, Suite 600Los Angeles, CA 90048 · (310) 423-9680 · Fax (310) 423-9681
Phone(310) 423-9680
Fax(310) 423-9681
Sole ProprietorNo
Medical School CMSHarvard Medical SchoolGraduated 1981
Enumeration DateJanuary 3, 2006
Last NPPES UpdateAugust 12, 2014
✔ NPI 1447238324 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in CA · G49670
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
444 S SAN VICENTE BLVD, Los Angeles, CA 90048
Open in Google Maps ↗

Other Identifiers 1

Medicare UPINE49271CA

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

Dr. Cathleen Noel Bairey Merz M.d. 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 ID5799728937
PECOS Enrollment IDI20050608000356
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.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
246 services157 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
38 services36 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
27 services27 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90048 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
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

87.67/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality80.86
Promoting Interoperability99
Improvement Activities40
Cost49.42

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.

LA SPINE, LLC
Specialist
444 S SAN VICENTE BLVD, SUITE 901
LOS ANGELES, CA 90048
Los Angeles County (310) 248-7322
DR. JASON A BERKLEY D.O.
Pain Medicine (Interventional Pain Medicine)
444 S SAN VICENTE BLVD, 800
LOS ANGELES, CA 90048
Los Angeles County (310) 423-9900
SRINATH SAMUDRALA MD INC
Neurological Surgery
444 S SAN VICENTE BLVD, SUITE 800
LOS ANGELES, CA 90048
Los Angeles County (310) 423-8972
DR. SANG DO KIM MD
Orthopaedic Surgery (Orthopaedic Surgery of the Spine)
444 S SAN VICENTE BLVD, SUITE 901
LOS ANGELES, CA 90048
Los Angeles County (310) 248-7322
DR. CAROLYN J. ALEXANDER M.D.
Obstetrics & Gynecology
444 S SAN VICENTE BLVD, #1002
LOS ANGELES, CA 90048
Los Angeles County (310) 423-9964
NEEL ANAND M.D.
Orthopaedic Surgery (Orthopaedic Surgery of the Spine)
444 S SAN VICENTE BLVD, SUITE 800
LOS ANGELES, CA 90048
Los Angeles County (310) 423-9779
MS. JOANNA CAZDEN MS-CCC
Speech-Language Pathologist
444 S SAN VICENTE BLVD, # 701
LOS ANGELES, CA 90048
Los Angeles County (310) 423-9229
AVROM GART MD INC
Physical Medicine & Rehabilitation (Pain Medicine)
444 S SAN VICENTE BLVD, SUITE #800
LOS ANGELES, CA 90048
Los Angeles County (310) 423-9900

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 Cathleen Bairey Merz's NPI number?

The NPI number for Cathleen Bairey Merz is 1447238324. It was assigned to this individual provider in the NPPES registry on January 3, 2006.

Where is Cathleen Bairey Merz located?

Cathleen Bairey Merz practices at 444 S San Vicente Blvd Suite 600, Los Angeles, CA 90048. The listed phone number is (310) 423-9680.

What is Cathleen Bairey Merz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Cathleen Bairey Merz enrolled in Medicare?

Yes. Cathleen Bairey Merz 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 Cathleen Bairey Merz was last updated on August 12, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.