Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Larissa Diane Watson, FNP-BC

Family Nurse Practitioner in Indianapolis, IN · enumerated 2015.

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

National Provider Identifier

1821479908

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Registry record

Entity type Individual (Type 1)

Name Mrs. Larissa Diane Watson

Credential FNP-BC

Sex Female

Practice address 7320 E 86th St Ste 100, Indianapolis, IN, 46256

Phone (463) 999-9179

Fax (463) 999-9179

Enumeration date Jun 15, 2015

Last updated in NPPES Apr 18, 2025

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 71005553A (IN) Secondary

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209023916 (IL) Secondary

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 71005553A (IN) Secondary

363LP2300X Primary Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 28208703A (IN) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209023916 (IL) Primary

Other identifiers

Identifier	Type	State	Issuer
201312530	Medicaid	IN	-

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

What specialty is Larissa Watson?

Larissa Watson is registered in NPPES with the primary taxonomy of Family Nurse Practitioner. 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.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-18.