Active NPI 1043672835 Individual Practitioner Male Practitioner

Dr. Michael O'halleran , MD

Pediatrics • Brooklyn, NY

Professional Overview & Biography Verified Profile Summary

Dr. Michael O'Halleran, MD is a certified Pediatrics practicing in Brooklyn, NY. With approximately 10 years of clinical experience since graduating from Loyola University Of Chicago, Stritch School Of Medicine in 2016, Dr. O'Halleran delivers high-quality medical care to the local community at 121 DEKALB AVE.

Dr. O'Halleran does not directly accept Medicare assignment.

Practice Location & Contact Primary Location

Practice Address

121 Dekalb Ave

Brooklyn, NY 112015425

Telephone 7182506917

Associated Practice Facility / Clinic

🏢 The Brooklyn Hospital Center Facility NPI 1326046467

Medicare Profile & Education

Medical School

Loyola University Of Chicago, Stritch School Of Medicine

Graduation Year

2016

Medicare Assignment

Not Specified

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Pediatrics in Brooklyn, NY

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

10 Yrs -16.1 yrs vs City Avg

City Avg: 26.1 Yrs

State Avg: 24.1 Yrs

Regional Practice Density

769 Specialists

Practicing in Brooklyn, NY (6127 Statewide)

Telehealth Adoption Rate

0.5% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. O'halleran (10 Years) 10 Yrs

Brooklyn Specialty Average (26.1 Years) 26.1 Yrs

Medical Specialties & State Licenses

CMS Verified: 2025-04-30

Pediatrics Primary Specialty

NUCC Taxonomy Code: 208000000X

State License NY 323856

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.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

110435200 (FL)

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

40 Associated Practitioners

Dr. Evangelia Davanos , PharmD, CNSC

Pharmacist - Nutrition Support

NPI 1003187626

Doctor of Pharmacy (Pharm.D.), CNSC

Kwong Lau

Student in an Organized Health Care Education/Training Program

NPI 1003348657

Dr. Saisree Konda , MD

Student in an Organized Health Care Education/Training Program

NPI 1003507518

Doctor of Medicine (M.D.)

Dr. Uzoma Ukomadu , MD

Orthopaedic Surgery - Hand Surgery

NPI 1013111707

Doctor of Medicine (M.D.)

Mariana Avelar Falcone De Melo

Student in an Organized Health Care Education/Training Program

NPI 1013371871

Dr. Simone Cardoso , PT, DPT

Physical Therapist

NPI 1013387398

Physical Therapist, Doctor of Physical Therapy

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

25 Historical Events

📍

Updated Practice Location April 30, 2025

Registered at 121 DEKALB AVE, BROOKLYN, NY 112015425 (Tel: 7182506917)

📍

Updated Business Mailing Address April 30, 2025

Registered at 121 DEKALB AVE, BROOKLYN, NY 112015425

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) April 30, 2025

Pediatrics (License #323856 in NY)

📍

Updated Business Mailing Address October 29, 2022

Registered at 2 TAMPA GENERAL CIR FL 5, TAMPA, FL 336063571

📍

Updated Practice Location September 17, 2022

Registered at 2 TAMPA GENERAL CIR FL 5, TAMPA, FL 336063571 (Tel: 8132598857)

📍

Updated Business Mailing Address September 17, 2022

Registered at 2545 2ND AVE S, SAINT PETERSBURG, FL 337121115 (Tel: 5166615631)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) September 17, 2022

Pediatrics (License #A161617 in CA)

📍

Updated Business Mailing Address June 16, 2021

Registered at 900 S PINE ISLAND RD STE 800, PLANTATION, FL 333243923 (Tel: 9549676400)

👤

Provider Name / Credentials Updated June 16, 2021

Recorded as MICHAEL O'HALLERAN, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 16, 2021

Pediatrics (License #ME146697 in FL)

📍

Updated Practice Location September 21, 2020

Registered at 431 SOUTHWEST BLVD N, ST PETERSBURG, FL 337031399 (Tel: 7275267337)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) September 21, 2020

Pediatrics (License #A161617 in CA)

📍

Updated Practice Location September 12, 2020

Registered at 501 6TH AVE S, ST PETERSBURG, FL 337014634 (Tel: 7277674106)

📍

Updated Business Mailing Address September 12, 2020

Registered at 431 SOUTHWEST BLVD N, ST PETERSBURG, FL 337031399 (Tel: 7275267337)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) September 12, 2020

Pediatrics (License #146697 in FL)

📍

Updated Practice Location August 26, 2019

Registered at 2 UPPER RAGSDALE DR STE B210, MONTEREY, CA 939407851 (Tel: 8313330999)

📍

Updated Business Mailing Address August 26, 2019

Registered at 2 UPPER RAGSDALE DR STE B210, MONTEREY, CA 939407851 (Tel: 8313330999)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) August 26, 2019

Student in an Organized Health Care Education/Training Program

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) March 31, 2019

Pediatrics (License #A161617 in CA)

✅

NPI Profile Active March 22, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location March 22, 2016

Registered at 501 6TH AVE S, ST PETERSBURG, FL 337014634 (Tel: 7277674106)

📍

Updated Business Mailing Address March 22, 2016

Registered at 501 6TH AVE S, ST PETERSBURG, FL 337014634 (Tel: 7277674106)

👤

Provider Name / Credentials Updated March 22, 2016

Recorded as MICHAEL O'HALLERAN, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) March 22, 2016

Student in an Organized Health Care Education/Training Program

🟢

Initial NPI Registration & Enumeration March 22, 2016

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1043672835

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: March 22, 2016

Last Update: April 30, 2025

Sole Proprietor: Yes

Update or Correct Profile

Mailing Address

121 Dekalb Ave

Brooklyn, NY 112015425

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.