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DR. MARCUS D O'BRIEN M.D.
NPI 1215944772
Pediatrics in Little Rock, AR

Active since August 01, 2006PECOS Enrolled
1 CHILDRENS WAY #653, LITTLE ROCK, AR 72202(501) 364-1100(501) 364-2963 Get Directions Write a Review

NPPES record last updated: May 30, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Marcus D O'brien M.d. NPPES

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

DR. MARCUS D O'BRIEN M.D. (NPI 1215944772) is an individual pediatrics provider in Little Rock, Arkansas, licensed in Arkansas (C-6643) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1215944772
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameDR. MARCUS D O'BRIENCredential: M.D.
Location Address1 CHILDRENS WAY #653Little Rock, AR 72202
Mailing Address1 Childrens Way # 653Little Rock, AR 72202-3500 · (501) 364-1100 · Fax (501) 364-2963
Phone(501) 364-1100
Fax(501) 364-2963
Sole ProprietorNo
Enumeration DateAugust 1, 2006
Last NPPES UpdateMay 30, 2018
✔ NPI 1215944772 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in AR · C-6643
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
1 CHILDRENS WAY #653, Little Rock, AR 72202
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Other Identifiers 4

Medicaid113022001AR
Other51068AR · Bluecross Blueshield
Other13317000000Qualchoice
Other536103YJBYAR · Medicare

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Arkansas Blue Cross and Blue Shield, Health Advantage, Octave.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Marcus D O'brien 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 Reassignments

2

Medicare enrollment records show Marcus O'brien reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of Arkansas For Medical Sciences
1,330 mi
Developmental - Behavioral Pediatrics
519 LATHAM DR
Lowell, AR 72745
  • Reassigned Medicare billing, Arkansas enrollment
  • 1,246 clinicians in this Medicare group
NPI 1407021280 (479) 750-0125
Arkansas Childrens Hospital
1,437 mi
Pediatrics
1 CHILDRENS WAY # 664
Little Rock, AR 72202
  • Reassigned Medicare billing, Arkansas enrollment
  • 944 clinicians in this Medicare group
NPI 1598773079 (501) 364-2526

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 72202 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
$79.72 typical visit price
range $51.36 – $157.74
Typical copayment $19.93 (range $12.84 – $39.43)
Most-billed visit code 99203
Established Patient
$91.63 typical visit price
range $16.16 – $128.77
Typical copayment $22.90 (range $4.04 – $32.19)
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 3

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

SHELLEY ELAINE WETSELL CRARY MD
Pediatrics (Pediatric Hematology-Oncology)
1 CHILDRENS WAY #653
LITTLE ROCK, AR 72202
Pulaski County (501) 364-1100
DR. TONYA MARIE THOMPSON MD
Emergency Medicine
1 CHILDRENS WAY #653
LITTLE ROCK, AR 72202
Pulaski County (501) 364-1598
MARY HUCKABEE MD
Pediatrics
1 CHILDRENS WAY #653
LITTLE ROCK, AR 72202
Pulaski County (501) 364-1100

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 Marcus O'brien's NPI number?

The NPI number for Marcus O'brien is 1215944772. It was assigned to this individual provider in the NPPES registry on August 1, 2006.

Where is Marcus O'brien located?

Marcus O'brien practices at 1 Childrens Way #653, Little Rock, AR 72202. The listed phone number is (501) 364-1100.

What is Marcus O'brien's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Marcus O'brien enrolled in Medicare?

Yes. Marcus O'brien is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Marcus O'brien's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marcus O'brien reassigns Medicare benefits to 2 organizations: University Of Arkansas For Medical Sciences (Lowell, AR) and Arkansas Childrens Hospital (Little Rock, AR). 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 Marcus O'brien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Marcus O'brien accept?

Health plans from Arkansas Blue Cross and Blue Shield, Health Advantage and Octave list Marcus O'brien 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.

When was this NPI record last updated?

The NPPES record for Marcus O'brien was last updated on May 30, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.