Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Siavash Nael, M.D.

Behavioral Neurology & Neuropsychiatry Physician in Oklahoma City, OK · enumerated 2005 · practices at Siavash Nael MD Inc.

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

National Provider Identifier

1902809353

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Registry record

Entity type Individual (Type 1)

Name Dr. Siavash Nael

Credential M.D.

Sex Male

Practice address Oklahoma City, OK, 73109

Phone (405) 634-5529

Fax (405) 636-1673

Enumeration date May 31, 2005

Last updated in NPPES Sep 13, 2018

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2084B0040X Behavioral Neurology & Neuropsychiatry Physician Allopathic & Osteopathic Physicians · License 12064 (OK) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
731186241	Other	OK	TAX ID UNDER GROUP
100038930A	Medicaid	OK	-

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 Siavash Nael?

Siavash Nael is registered in NPPES with the primary taxonomy of Behavioral Neurology & Neuropsychiatry Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Siavash Nael MD Inc Psychiatry Physician · Oklahoma City, OK NPI 1295955318 Mary Anne Secrist Psychiatric/Mental Health Clinical Nurse Specialist · Oklahoma City, OK NPI 1962401653 Mary Carey Psychiatric/Mental Health Clinical Nurse Specialist · Oklahoma City, OK NPI 1669471181

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-09-13.