Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Guillermo Manuel Guardia Gonzales, MD

Endocrinology, Diabetes & Metabolism Physician in Toledo, OH · enumerated 2006 · practices at Endocrine & Diabetes Care Center Inc.

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

National Provider Identifier

1902866387

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Registry record

Entity type Individual (Type 1)

Name Guillermo Manuel Guardia Gonzales

Credential MD

Sex Male

Practice address 2100 W Central Ave, Suite 100, Toledo, OH, 43606

Phone (419) 537-5111

Fax (419) 537-5131

Enumeration date Mar 28, 2006

Last updated in NPPES Nov 3, 2023

Taxonomy & licenses

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License 35095361 (OH) 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
06929	Other	OH	PARAMOUNT
P00863907	Other	OH	MEDICARE - RR
000000671824	Other	OH	ANTHEM

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.

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Frequently asked questions

Where does Guillermo Guardia Gonzales practice?

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

What is the NPI number for Guillermo Guardia Gonzales?

The National Provider Identifier (NPI) for Guillermo Guardia Gonzales is 1902866387, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Richard Beham Endocrinology, Diabetes & Metabolism Physician · Toledo, OH NPI 1568468023 Paul Delamater Pediatric Endocrinology Physician · Toledo, OH NPI 1104823210 Aparna Brown Endocrinology, Diabetes & Metabolism Physician · Toledo, OH NPI 1174570337 Patti Gallagher Family Nurse Practitioner · Toledo, OH NPI 1336238732 Endocrine & Diabetes Care Center Inc Endocrinology, Diabetes & Metabolism Physician · Toledo, OH NPI 1720177314 Bhaskar Gundabolu Endocrinology, Diabetes & Metabolism Physician · Toledo, OH NPI 1346458767 Kalpana Naraharisetty Internal Medicine Physician · Toledo, OH NPI 1477719623 Loyal Coshway Pediatric Endocrinology Physician · Toledo, OH NPI 1952531550

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-03.