Doctor profile · Federal record
Dr. Leonard Zemel, M.D.
Endocrinology, Diabetes & Metabolism Physician · Denver, CO
- NPI 1447256045
- 21 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3464 S Willow St, # 280
Denver, CO 802314531
(303) 755-2900
fax (303) 755-0404 - Mailing address
-
3865 Cherrycreek Dr N, #322
Denver, CO 80209
Credentials & registration
- NPI registered
- June 2005 — 21 yrs on file
- Profile last updated
- November 13, 2007
- Specialty taxonomy
- 207RE0101X — NUCC code
- State license (1)
- Colorado #27647
- Medicaid
- CO #01276476
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1447256045. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
160
Distinct HCPCS
3
Medicare allowed
$17,447
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 126 | 98 | $129 | |
83036 |
Hemoglobin a1c level | 23 | 22 | $10 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 11 | 11 | $91 |
In context: peer comparison
Among 5 peers in this city , average services per provider: 187. This provider delivers 0.9× the peer median.Open Payments
Industry payments received
All-time total
$121
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| SANOFI-AVENTIS U.S. LLC | 1 | $120.82 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,429
Patients
562
Total drug cost
$329,838
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 278 | 106 | $5,203 |
| Atorvastatin Calcium | Generic | 193 | 78 | $2,394 |
| Metformin Hcl | Generic | 163 | 64 | $2,348 |
| Lisinopril | Generic | 90 | 34 | $781 |
| Rosuvastatin Calcium | Generic | 83 | 38 | $1,556 |
| Amlodipine Besylate | Generic | 74 | 31 | $756 |
| Lantus Solostar (Insulin Glargine,hum.Rec.Anlog) | Brand | 70 | 26 | $63,980 |
| Lisinopril-Hydrochlorothiazide (Lisinopril/Hydrochlorothiazide) | Brand | 68 | 26 | $1,041 |
| Alendronate Sodium | Generic | 67 | 26 | $797 |
| Ozempic (Semaglutide) | Brand | 67 | 26 | $146,166 |
Frequently asked questions
What is Dr. Leonard Zemel's medical specialty?
Dr. Leonard Zemel practices Endocrinology, Diabetes & Metabolism Physician in Denver, CO.
Where does Dr. Leonard Zemel practice?
Dr. Leonard Zemel practices at 3464 S Willow St, Denver, CO 802314531. Office phone: 3037552900.
What is Dr. Leonard Zemel's NPI?
Dr. Leonard Zemel's National Provider Identifier (NPI) is 1447256045, issued by NPPES.
What procedures does Dr. Leonard Zemel 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.