Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Adam Gordon O'Brien, APRN, RN, PMHNP-BC

Q: What is the NPI number for Adam O'Brien?

The National Provider Identifier (NPI) for Adam O'Brien is 1801592951, a Type 1 (individual) record in the CMS NPPES registry.

Psychiatric/Mental Health Nurse Practitioner in Valhalla, NY · enumerated 2023.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1801592951

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Registry record

Entity type Individual (Type 1)

Name Mr. Adam Gordon O'Brien

Credential APRN, RN, PMHNP-BC

Sex Male

Practice address 100 Woods Rd, Valhalla, NY, 10595

Phone (914) 493-7182

Fax (914) 493-7152

Enumeration date Jan 31, 2023

Last updated in NPPES Apr 8, 2025

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 10.180247 (CT) Secondary

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 09190023 (NH) Secondary

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 011631 (CT) Secondary

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 26NJ01472800 (NJ) Secondary

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 404805 (NY) Primary

163W00000X Registered Nurse Nursing Service Providers · License 26NR15624200 (NJ) Secondary

163W00000X Registered Nurse Nursing Service Providers · License 668512 (NY) Secondary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Adam O'Brien practice?

The practice location on file with NPPES is in Valhalla, NY. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Adam O'Brien?

The National Provider Identifier (NPI) for Adam O'Brien is 1801592951, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-08.