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

Guillermo Nicolas Cazares, MD

Family Medicine Physician in Odessa, TX · enumerated 2010.

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

National Provider Identifier

1851617658

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Guillermo Nicolas Cazares

Credential MD

Sex Male

Practice address Odessa, TX, 79763

Phone (432) 703-5238

Enumeration date Apr 19, 2010

Last updated in NPPES Mar 25, 2019

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

Taxonomy & licenses

1744R1102X Research Study Specialist Other Service Providers Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License NA (TX) Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License R6983 (TX) Primary

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

How do I verify Guillermo Cazares's NPI record?

Cross-check NPI 1851617658 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1851617658 active?

Yes, as of the latest NPPES snapshot, NPI 1851617658 is active (record last updated 2019-03-25).

Other providers at this practice address

Browse all →

Texas Tech University Health Sciences Center Odessa Family Medicine Physician · Odessa, TX NPI 1407845084 Texas Tech University Health Sciences Center Internal Medicine Physician · Odessa, TX NPI 1255320388 Cornelia De Riese Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician · Odessa, TX NPI 1841280716 Carol Bergquist Obstetrics & Gynecology Physician · Odessa, TX NPI 1477536621 Randall Kelly Maternal & Fetal Medicine Physician · Odessa, TX NPI 1851374946 Michael Galloway Obstetrics & Gynecology Physician · Odessa, TX NPI 1992764013 Craig Spellman Endocrinology, Diabetes & Metabolism Physician · Odessa, TX NPI 1174587935 Texas Tech University Health Sciences Center Public Health or Welfare Agency · Odessa, TX NPI 1760436448

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-03-25.