NANCY COLLINS O'BRIEN MD
NPI 1770576373
Pediatrics - Pediatric Hematology-Oncology in Ottumwa, IA

Q: What is Nancy O'brien's NPI number?

The NPI number for Nancy O'brien is 1770576373. It was assigned to this individual provider in the NPPES registry on August 30, 2005. The provider is also known as Nancy Ann Collins.

Q: What is Nancy O'brien's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.

Q: When was this NPI record last updated?

The NPPES record for Nancy O'brien was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.

Active since August 30, 2005

OTTUMWA PEDIATRICS, 931 PENNSYLVANIA AVE, OTTUMWA, IA 52501(641) 684-3000(641) 684-2469 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

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About Nancy Collins O'brien Md NPPES

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

NANCY COLLINS O'BRIEN MD (NPI 1770576373) is an individual pediatric hematology-oncology provider in Ottumwa, Iowa, licensed in Iowa (29316) and active in the NPI registry since August 2005.

NPPES Registry Identity

NPI1770576373

Entity TypeIndividualFemale

Primary Taxonomy2080P0207X

Provider Legal NameNANCY COLLINS O'BRIENCredential: MD

Location AddressOTTUMWA PEDIATRICS, 931 PENNSYLVANIA AVEOttumwa, IA 52501

Mailing AddressOttumwa Pediatrics, 931 Pennsylvania AveOttumwa, IA 52501 · (641) 684-3000 · Fax (641) 684-2469

Phone(641) 684-3000

Fax(641) 684-2469

Sole ProprietorNo

Enumeration DateAugust 30, 2005

Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration

✔ NPI 1770576373 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric Hematology-OncologyAllopathic & Osteopathic Physicians

Taxonomy Code2080P0207X

License✔ Licensed in IA · 29316

Definition

A pediatrician trained in the combination of pediatrics, hematology and oncology to recognize and manage pediatric blood disorders and cancerous diseases.

Also ListedPediatricsTaxonomy 208000000X · License 29316 (IA)

OTTUMWA PEDIATRICS, Ottumwa, IA 52501

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Other Names 1

Former Name (1)Nancy Ann Collins

Other Identifiers 5

Other42068106032IA · John Deere Health

Medicaid0098012IA

OtherG004IA · Triwest

Other37875IA · Iowa Health Solutions

Other51222IA · Wellmark Inc Bcbs Of Ia

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 Nancy O'brien's NPI number?

The NPI number for Nancy O'brien is 1770576373. It was assigned to this individual provider in the NPPES registry on August 30, 2005. The provider is also known as Nancy Ann Collins.

Where is Nancy O'brien located?

Nancy O'brien practices at Ottumwa Pediatrics 931 Pennsylvania Ave, Ottumwa, IA 52501. The listed phone number is (641) 684-3000.

What is Nancy O'brien's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.

When was this NPI record last updated?

The NPPES record for Nancy O'brien was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.