Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Erica Farmer, O.D.

Optometrist in Havre, MT · enumerated 2006.

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

National Provider Identifier

1164454872

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Registry record

Entity type Individual (Type 1)

Name Dr. Erica Farmer

Credential O.D.

Sex Female

Practice address 20 13th St W, Box 1231, Havre, MT, 59501

Phone (406) 262-2020

Enumeration date Jul 6, 2006

Last updated in NPPES Oct 9, 2025

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 824 (MT) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

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 Erica Farmer?

Erica Farmer is registered in NPPES with the primary taxonomy of Optometrist. 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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Thomas Booth Family Medicine Physician · Havre, MT NPI 1437121993 Kent Rosengren Clinical Psychologist · Havre, MT NPI 1457323941 John Pike Orthopaedic Surgery Physician · Havre, MT NPI 1104898618 Northern Montana Hospital Community/Retail Pharmacy · Havre, MT NPI 1356314132 Northern Montana Hospital Rural Health Clinic/Center · Havre, MT NPI 1669445490 Dale Herd Surgical Physician Assistant · Havre, MT NPI 1437118916 Mark Ward Internal Medicine Physician · Havre, MT NPI 1538122544 Mark Jamieson Physician Assistant · Havre, MT NPI 1609816867

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-09.