Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Arlen Mark Halstead II, RN, NP

Psychiatric/Mental Health Nurse Practitioner in Syracuse, NY · enumerated 2011.

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

National Provider Identifier

1861798977

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Registry record

Entity type Individual (Type 1)

Name Arlen Mark Halstead II

Credential RN, NP

Sex Male

Practice address 329 N Salina St, Syracuse, NY, 13203

Phone (315) 471-1564

Enumeration date Feb 7, 2011

Last updated in NPPES Jul 8, 2022

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 005567 (NY) Secondary

163W00000X Registered Nurse Nursing Service Providers · License 736330 (NY) Secondary

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 404189 (NY) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

Other identifiers

Identifier	Type	State	Issuer
01420800	Medicaid	NY	-

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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Arlen Halstead?

Arlen Halstead is registered in NPPES with the primary taxonomy of Psychiatric/Mental Health Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-08.