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

Dr. Gretchen F Toler, MD

Internal Medicine Physician in Dallas, TX · enumerated 2006.

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

National Provider Identifier

1477629699

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Registry record

Entity type Individual (Type 1)

Name Dr. Gretchen F Toler

Credential MD

Sex Female

Practice address Dallas, TX, 75231

Phone (214) 373-9391

Fax (214) 373-9303

Enumeration date Nov 28, 2006

Last updated in NPPES Sep 24, 2019

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

Taxonomy & licenses

2083P0901X Public Health & General Preventive Medicine Physician Allopathic & Osteopathic Physicians · License G8466 (TX) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License G8466 (TX) 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
110243665	Other	TX	RAILROAD MEDICARE
85284G	Other	TX	BLUE CROSS

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 Gretchen Toler practice?

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

What is the NPI number for Gretchen Toler?

The National Provider Identifier (NPI) for Gretchen Toler is 1477629699, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-09-24.