Doctor profile · Federal record
Dr. Guillermo Guardia Gonzales, MD
Endocrinology, Diabetes & Metabolism Physician (CMS: Endocrinology) · Toledo, OH
- NPI 1902866387
- Accepts Medicare
- 28 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2100 W Central Ave, Suite 100
Toledo, OH 436063834
(419) 537-5111
fax (419) 537-5131
Credentials & registration
- NPI registered
- March 2006 — 20 yrs on file
- Profile last updated
- November 3, 2023
- Year of graduation
- 1998 — 28 yrs since
- Specialty taxonomy
- 207RE0101X — NUCC code
- State license (1)
- Ohio #35095361
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1902866387. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,784
Distinct HCPCS
7
Medicare allowed
$127,378
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 653 | 398 | $119 | |
83036 |
Hemoglobin a1c level | 434 | 252 | $9 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 184 | 162 | $85 | |
82962 |
Blood glucose (sugar) test performed by hand-held instrument | 163 | 138 | $3 | |
95251 |
Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report | 150 | 88 | $33 | |
76536 |
Ultrasound scan of head and neck soft tissue | 118 | 114 | $102 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 82 | 82 | $153 |
In context: peer comparison
Among 6 peers in this city , average services per provider: 163. This provider delivers 11× the peer median.Open Payments
Industry payments received
All-time total
$34
Transactions
2
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Medtronic, Inc. | 1 | $18.32 | |
| Amgen Inc. | 1 | $16.00 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
3,905
Patients
1,083
Total drug cost
$1,703,659
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 903 | 231 | $13,765 |
| Metformin Hcl | Generic | 384 | 97 | $4,219 |
| Glimepiride | Generic | 296 | 84 | $6,258 |
| Lantus Solostar (Insulin Glargine,hum.Rec.Anlog) | Brand | 287 | 94 | $307,632 |
| Metformin Hcl Er (Metformin Hcl) | Brand | 266 | 73 | $4,417 |
| Ozempic (Semaglutide) | Brand | 225 | 60 | $340,838 |
| Synthroid (Levothyroxine Sodium) | Brand | 214 | 60 | $14,181 |
| Atorvastatin Calcium | Generic | 201 | 56 | $3,021 |
| Glipizide | Generic | 200 | 47 | $1,865 |
| Trulicity (Dulaglutide) | Brand | 197 | 55 | $329,230 |
Hospital affiliations
Frequently asked questions
What is Dr. Guillermo Guardia Gonzales's medical specialty?
Dr. Guillermo Guardia Gonzales practices Endocrinology, Diabetes & Metabolism Physician in Toledo, OH.
Where does Dr. Guillermo Guardia Gonzales practice?
Dr. Guillermo Guardia Gonzales practices at 2100 W Central Ave, Toledo, OH 436063834. Office phone: 4195375111.
What is Dr. Guillermo Guardia Gonzales's NPI?
Dr. Guillermo Guardia Gonzales's National Provider Identifier (NPI) is 1902866387, issued by NPPES.
Does Dr. Guillermo Guardia Gonzales accept Medicare assignment?
Yes. Dr. Guillermo Guardia Gonzales accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Guillermo Guardia Gonzales commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Hemoglobin a1c level (HCPCS 83036); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.