Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Isabel Quintana Greenfield, M.D.

Obstetrics & Gynecology Physician in Missoula, MT · enumerated 2015 · practices at Partnership Health Center Inc.

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

National Provider Identifier

1326432873

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Registry record

Entity type Individual (Type 1)

Name Dr. Isabel Quintana Greenfield

Credential M.D.

Sex Female

Practice address 401 Railroad St W, Missoula, MT, 59802

Phone (406) 258-4494

Enumeration date Mar 23, 2015

Last updated in NPPES Feb 13, 2025

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License MED-PHYS-APP-142558 (MT) Primary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License A144104 (CA) Secondary

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

Where does Isabel Greenfield practice?

The practice location on file with NPPES is in Missoula, MT. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Isabel Greenfield?

The National Provider Identifier (NPI) for Isabel Greenfield is 1326432873, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-02-13.