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MICHAEL O'HALLERAN MD
NPI 1043672835
Pediatrics in Brooklyn, NY

Active since March 22, 2016PECOS Enrolled
121 DEKALB AVE, BROOKLYN, NY 11201(718) 250-6917 Get Directions Write a Review

NPPES record last updated: April 30, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Oct 29, 2022, Sep 17, 2022, Jun 16, 2021 and 5 more (8 updates tracked since 2016).

About Michael O'halleran Md NPPES

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

MICHAEL O'HALLERAN MD (NPI 1043672835) is an individual pediatrics provider in Brooklyn, New York, licensed in New York (323856) and active in the NPI registry since March 2016. He is enrolled in Medicare PECOS and is a graduate of Loyola University Of Chicago, Stritch School Of Medicine (2016).

NPPES Registry Identity

NPI1043672835
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameMICHAEL O'HALLERANCredential: MD
Location Address121 DEKALB AVEBrooklyn, NY 11201-5425
Mailing Address121 Dekalb AveBrooklyn, NY 11201-5425
Phone(718) 250-6917
Sole ProprietorYes
Medical School CMSLoyola University Of Chicago, Stritch School Of MedicineGraduated 2016
Enumeration DateMarch 22, 2016
Last NPPES UpdateApril 30, 20258 updates tracked since enumeration
NPPES CertifiedApril 30, 2025
✔ NPI 1043672835 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in NY · 323856
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.
121 DEKALB AVE, Brooklyn, NY 11201
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Other Identifiers 1

Medicaid110435200FL

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Michael O'halleran Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID2062845720
PECOS Enrollment IDI20260507004164
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11201 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
$105.06 typical visit price
range $67.40 – $203.53
Typical copayment $26.26 (range $16.85 – $50.88)
Most-billed visit code 99203
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
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 20

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

EVANGELIA DAVANOS PHARMD, CNSC
Pharmacist (Nutrition Support)
121 DEKALB AVE, B231
BROOKLYN, NY 11201
Kings County (718) 250-8211
MR. KWONG LAU
Student in an Organized Health Care Education/Training Program
121 DEKALB AVE
BROOKLYN, NY 11201
Kings County (718) 250-8000
SAISREE KONDA M.D.
Student in an Organized Health Care Education/Training Program
121 DEKALB AVE
BROOKLYN, NY 11201
Kings County (718) 250-8000
DR. UZOMA N UKOMADU M.D.
Orthopaedic Surgery (Hand Surgery)
121 DEKALB AVE, ORTHOSUITE
BROOKLYN, NY 11201
Kings County (718) 250-7700
DR. MARIANA AVELAR FALCONE DE MELO
Student in an Organized Health Care Education/Training Program
121 DEKALB AVE, HOUSE STAFF ADMINISTRATION
BROOKLYN, NY 11201
Kings County (718) 250-6604
SIMONE CARDOSO PT,DPT
Physical Therapist
121 DEKALB AVE
BROOKLYN, NY 11201
Kings County (718) 250-8143
MARIE METILAINE ALEXANDRE NURSE PRACTITIONER
Nurse Practitioner (Family)
121 DEKALB AVE
BROOKLYN, NY 11201
Kings County (718) 250-8026
DR. JESSIE COLTER FULLMER MD
Student in an Organized Health Care Education/Training Program
121 DEKALB AVE
BROOKLYN, NY 11201
Kings County (718) 250-8000

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 Michael O'halleran's NPI number?

The NPI number for Michael O'halleran is 1043672835. It was assigned to this individual provider in the NPPES registry on March 22, 2016.

Where is Michael O'halleran located?

Michael O'halleran practices at 121 Dekalb Ave, Brooklyn, NY 11201. The listed phone number is (718) 250-6917.

What is Michael O'halleran's specialty?

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

Is Michael O'halleran enrolled in Medicare?

Yes. Michael O'halleran is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Michael O'halleran was last updated on April 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.