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

Dr. Kumaraswamy Sivakumar, M.D.

Neuromuscular Medicine (Psychiatry & Neurology) Physician in Phoenix, AZ · enumerated 2006.

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

National Provider Identifier

1821035254

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Registry record

Entity type Individual (Type 1)

Name Dr. Kumaraswamy Sivakumar

Credential M.D.

Sex Male

Practice address Phoenix, AZ, 85028

Phone (480) 314-1007

Fax (480) 314-1003

Enumeration date Jun 2, 2006

Last updated in NPPES Aug 8, 2019

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

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 25540 (AZ) Secondary

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 25540 (AZ) Secondary

2084N0600X Clinical Neurophysiology Physician Allopathic & Osteopathic Physicians · License 25540 (AZ) Secondary

261QI0500X Infusion Therapy Clinic/Center Ambulatory Health Care Facilities · License 25540 (AZ) Secondary

2084N0008X Neuromuscular Medicine (Psychiatry & Neurology) Physician Allopathic & Osteopathic Physicians · License 25540 (AZ) 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
393108	Medicaid	AZ	-

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

What specialty is Kumaraswamy Sivakumar?

Kumaraswamy Sivakumar is registered in NPPES with the primary taxonomy of Neuromuscular Medicine (Psychiatry & Neurology) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-08-08.