Doctor profile · Federal record
Dr. John Jun, M.D.
Endocrinology, Diabetes & Metabolism Physician (CMS: Endocrinology) · Endocrinology, Diabetes & Metabolism Physician · Toledo, OH
- NPI 1487878559
- Accepts Medicare
- 28 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
2100 W Central Ave Fl 2
Toledo, OH 43606
(567) 420-1600
fax (567) 420-1633 - Additional location
-
3125 Transverse Dr
Toledo, OH 436148008
(419) 383-3780
fax (419) 383-2023 - Mailing address
-
3000 Arlington Ave Stop 1108
Toledo, OH 436142595
Credentials & registration
- NPI registered
- April 2007 — 19 yrs on file
- Profile last updated
- February 10, 2026
- Year of graduation
- 1998 — 28 yrs since
- Specialty taxonomy
- 207RE0101X — NUCC code
- State licenses (2)
- Ohio #35.128476 · Pennsylvania #MT187224
- Medicaid
- OH #0164737
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1487878559. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
328
Distinct HCPCS
7
Medicare allowed
$29,894
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 133 | 90 | $122 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 51 | 39 | $87 | |
83036 |
Hemoglobin a1c level | 47 | 29 | $10 | |
95251 |
Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report | 33 | 18 | $34 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 25 | 15 | $78 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 20 | 19 | $128 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 19 | 19 | $162 |
In context: peer comparison
Among 6 peers in this city , average services per provider: 163. This provider delivers 2.0× the peer median.Open Payments
Industry payments received
All-time total
$87
Transactions
4
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Medtronic, Inc. | 2 | $33.33 | |
| Tandem Diabetes Care, Inc. | 1 | $28.14 | |
| Ascendis Pharma Inc | 1 | $25.78 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
606
Patients
136
Total drug cost
$193,425
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 123 | 44 | $1,363 |
| Methimazole | Generic | 61 | 21 | $1,022 |
| Metformin Hcl | Generic | 60 | 17 | $525 |
| Novolog Flexpen (Insulin Aspart) | Brand | 44 | 14 | $45,006 |
| Lantus Solostar (Insulin Glargine,hum.Rec.Anlog) | Brand | 42 | 14 | $21,171 |
| Synthroid (Levothyroxine Sodium) | Brand | 36 | 14 | $1,806 |
| Alendronate Sodium | Generic | 35 | 0 | $237 |
| Ozempic (Semaglutide) | Brand | 32 | 0 | $37,779 |
| Jardiance (Empagliflozin) | Brand | 30 | 0 | $26,166 |
| Basaglar Kwikpen U-100 (Insulin Glargine,hum.Rec.Anlog) | Brand | 28 | 0 | $9,746 |
Frequently asked questions
What is Dr. John Jun's medical specialty?
Dr. John Jun practices Endocrinology, Diabetes & Metabolism Physician in Toledo, OH.
Where does Dr. John Jun practice?
Dr. John Jun practices at 2100 W Central Ave Fl 2, Toledo, OH 43606. Office phone: 5674201600.
What is Dr. John Jun's NPI?
Dr. John Jun's National Provider Identifier (NPI) is 1487878559, issued by NPPES.
Does Dr. John Jun accept Medicare assignment?
Yes. Dr. John Jun accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Jun commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Hemoglobin a1c level (HCPCS 83036). Source: CMS Medicare Physician & Other Practitioners file.