NANCY C. O'BRIEN MD – NPI #1770576373
Pediatrics
A pediatrician trained in the combination of pediatrics, hematology and oncology to recognize and manage pediatric blood disorders and cancerous diseases.
NANCY O'BRIEN is a physician located in OTTUMWA, IA. NPPES has assigned the NPI number 1770576373 to NANCY O'BRIEN on August 30, 2005. It is a Type-1 NPI, indicating this NPI number is associated with an individual. She is also known by her former name NANCY ANN COLLINS. With multiple taxonomy codes selected, the primary taxonomy selected by this provider is 2080P0207X from the Health Care Provider Taxonomy code set, which is classified as Pediatrics, specializing in Pediatric Hematology-Oncology
The NPI profile was last updated on Sep 11, 2025. Use the NPI data found here to bill health insurance companies, identify providers enrolled in Medicare and Medicaid services or other HIPAA compliant transactions. See the complete NPI profile for NANCY O'BRIEN below.
NPI Profile for
NANCY C. O'BRIEN
(about 21 years ago)
931 PENNSYLVANIA AVE
OTTUMWA, IA 52501 Phone: (641) 684-3000 Fax: (641) 684-2469
Identifiers for NANCY O'BRIEN
Identifiers are used to associate other provider identifiers such as Medicaid or other insurers (ie:, Blue Cross, Blue Shield, Aetna, Kaiser-Permanente, etc.), with their NPI number. These identifiers can be used in matching an NPI number to an insurer's records. However, not all providers have such numbers and not all providers choose to include them in their NPI information.
See identifiers
| Description | Issuer | State | Identifier |
|---|---|---|---|
| other | IOWA HEALTH SOLUTIONS | IA | 37875 |
| other | JOHN DEERE HEALTH | IA | 42068106032 |
| other | TRIWEST | IA | G004 |
| other | WELLMARK INC BCBS OF IA | IA | 51222 |
| medicaid | IA | 0098012 |
A taxonomy code is a code that describes the health care service provider's type, classification, and the area of specialization. The primary specialty for this provider is indicated as (Primary) below.
| Taxonomy Classification / Specialization | State | License |
|---|---|---|
| 2080P0207X - Pediatrics / Pediatric Hematology-Oncology (Primary) |
IA | 29316 |
| 208000000X - Pediatrics |
IA | 29316 |
The taxonomy codes are selected by the provider at the time of NPI registration. Selection of a taxonomy code does not replace any credentialing or validation process that the provider requesting the code should complete.