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DR. ROBERT A RUELAZ M.D.
NPI 1881749026
Internal Medicine - Clinical Cardiac Electrophysiology in Los Angeles, CA

Active since January 25, 2007PECOS EnrolledAccepts Medicare Assignment
4525 E CESAR E CHAVEZ AVE, LOS ANGELES, CA 90022(818) 660-0778(855) 578-3529 Get Directions Write a Review

NPPES record last updated: October 28, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Robert A Ruelaz M.d. NPPES

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

DR. ROBERT A RUELAZ M.D. (NPI 1881749026) is an individual clinical cardiac electrophysiology provider in Los Angeles, California, licensed in California (A78097) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, is affiliated with Mercyone North Iowa Medical Center, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1881749026
Entity TypeIndividualMale
Primary Taxonomy207RC0001X
Provider Legal NameDR. ROBERT A RUELAZCredential: M.D.
Location Address4525 E CESAR E CHAVEZ AVELos Angeles, CA 90022-1116
Mailing Address4525 E Cesar E Chavez AveLos Angeles, CA 90022-1116 · (818) 660-0778 · Fax (855) 578-3529
Phone(818) 660-0778
Fax(855) 578-3529
Sole ProprietorYes
Medical School CMSHarvard Medical SchoolGraduated 2000
Enumeration DateJanuary 25, 2007
Last NPPES UpdateOctober 28, 2024
NPPES CertifiedOctober 28, 2024
✔ NPI 1881749026 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Clinical Cardiac ElectrophysiologyAllopathic & Osteopathic Physicians
Taxonomy Code207RC0001X
Licenses✔ Licensed in CA · A78097✔ Licensed in TX · U0052
Definition
A field of special interest within the subspecialty of cardiovascular disease, specialty of Internal Medicine, which involves intricate technical procedures to evaluate heart rhythms and determine appropriate treatment for them.
Also ListedInternal MedicineTaxonomy 207R00000X · License U0052 (TX)
Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License U0052 (TX), A78097 (CA)
4525 E CESAR E CHAVEZ AVE, Los Angeles, CA 90022
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Secondary Practice Locations 2

Location 1707 E Marshall AveLongview, TX 75601-5545 · Phone (903) 315-4880
Location 22000 S Thompson StFlagstaff, AZ 86001-8759 · Phone (928) 226-6400

Other Identifiers 1

Medicaid1942505490CA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Blue Cross Blue Shield of Arizona, Cigna HealthCare of Arizona, Inc and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Robert A Ruelaz 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 ID5597847723
PECOS Enrollment IDI20080128000319, I20170531000058, I20241107001803
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 Reassignments

5

Medicare enrollment records show Robert Ruelaz reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Long Life Cardiac Center Medical Corporation
4.4 mi
Cardiovascular Disease
35 S GARFIELD AVE
Alhambra, CA 91801
  • Reassigned Medicare billing, California enrollment
  • 5 clinicians in this Medicare group
NPI 1720098171 (626) 458-8818
Robert A. Ruelaz, MD PC
7.8 mi
Clinical Cardiac Electrophysiology
801 S CHEVY CHASE DR, SUITE 108
Glendale, CA 91205
  • Reassigned Medicare billing, California enrollment
NPI 1942505490 (818) 246-2456
Northern Arizona Healthcare Corporation
380 mi
Family Medicine
1200 N. BEAVER STREET, ATTN: PAYER CREDENTIALING
Flagstaff, AZ 86001
  • Reassigned Medicare billing, Arizona enrollment
  • 552 clinicians in this Medicare group
NPI 1669914552 (928) 773-2546
Alegent Creighton Clinic
1,303 mi
Internal Medicine
12809 W DODGE ROAD
Omaha, NE 68154
  • Reassigned Medicare billing, Iowa enrollment
  • 482 clinicians in this Medicare group
NPI 1518227859 (402) 398-6255
North Iowa Mercy Clinics
1,464 mi
Family Medicine
635 E US HIGHWAY 9
Forest City, IA 50436
  • Reassigned Medicare billing, Iowa enrollment
  • 420 clinicians in this Medicare group
NPI 1811003015 (641) 585-2904

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

Areas of Expertise CMS Part B claims 7

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.
78 services61 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
58 services24 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
56 services54 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.
44 services44 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
44 services11 patients
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306
This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.
36 services35 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mercyone North Iowa Medical Center

Acute Care Hospitals · Mason City, IA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number160064
Location1000 Fourth Street SWMason City, IA 50401 · Cerro Gordo County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90022 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.

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 Robert Ruelaz's NPI number?

The NPI number for Robert Ruelaz is 1881749026. It was assigned to this individual provider in the NPPES registry on January 25, 2007.

Where is Robert Ruelaz located?

Robert Ruelaz practices at 4525 E Cesar E Chavez Ave, Los Angeles, CA 90022. The listed phone number is (818) 660-0778.

What is Robert Ruelaz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Clinical Cardiac Electrophysiology, with taxonomy code 207RC0001X.

Is Robert Ruelaz enrolled in Medicare?

Yes. Robert Ruelaz 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.

Which organizations bill Medicare for Robert Ruelaz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Robert Ruelaz reassigns Medicare benefits to 5 organizations: Long Life Cardiac Center Medical Corporation (Alhambra, CA), Robert A. Ruelaz, MD PC (Glendale, CA), Northern Arizona Healthcare Corporation (Flagstaff, AZ), Alegent Creighton Clinic (Omaha, NE) and North Iowa Mercy Clinics (Forest City, IA). Each 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 Robert Ruelaz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Robert Ruelaz accept?

Health plans from Blue Cross Blue Shield of Arizona, Blue Cross and Blue Shield of Texas, Cigna HealthCare of Arizona, Inc, Oscar Health and Oscar Insurance Company and 1 other insurer list Robert Ruelaz as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Robert Ruelaz affiliated with any hospitals?

According to CMS data, Robert Ruelaz is affiliated with Mercyone North Iowa Medical Center.

When was this NPI record last updated?

The NPPES record for Robert Ruelaz was last updated on October 28, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.