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

Dushyant Viswanathan, M.D.

Internal Medicine Physician in Woodland Hills, CA · enumerated 2008.

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

National Provider Identifier

1285897421

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Registry record

Entity type Individual (Type 1)

Name Dushyant Viswanathan

Credential M.D.

Sex Male

Practice address Woodland Hills, CA, 91367

Phone (888) 250-2246

Fax (844) 233-7639

Enumeration date Jul 8, 2008

Last updated in NPPES Sep 27, 2018

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A128469 (CA) Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License D71586 (MD) Secondary

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
043179600	Medicaid	CA	-

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

Is NPI 1285897421 active?

Yes, as of the latest NPPES snapshot, NPI 1285897421 is active (record last updated 2018-09-27).

How do I verify Dushyant Viswanathan's NPI record?

Cross-check NPI 1285897421 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-09-27.