LEONARD R ZEMEL (M.D.) – Endocrinology, Diabetes & Metabolism Physician, NPI 1447256045
Endocrinology, Diabetes & Metabolism Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
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Provider Addresses for LEONARD R ZEMEL (M.D.)
Clinic Service, 3464, South Willow Street, Denver, Denver County, Colorado, 80231, United States
# 280
DENVER, CO 802314531
Phone: (303) 755-2900
Fax: (303) 755-0404
Type: Location
3865 CHERRYCREEK DR N
#322
DENVER, CO 80209
Phone: (303) 388-6410
Fax: (303) 388-1069
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 11 Open Payments records for all available years, with a total value of $708.
Total Amount is formed as General ($708) + Research ($0) + Ownership ($0) = $708.
Last reported payment date: 2024-06-13 • Largest payer in this snapshot: SANOFI-AVENTIS U.S. LLC ($323).
Total Amount
$708
General + Research + Ownership
Payments
11
Total payment records
General Amount
$708
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-06-13
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| SANOFI-AVENTIS U.S. LLC | $323 |
| Novo Nordisk Inc | $145 |
| Abbott Laboratories | $136 |
| Lilly USA, LLC | $72 |
| Dexcom, Inc. | $33 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2004-11-12
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20041112001077 | I | Endocrinology | CO | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 126 | 98 | $0 |
| 83036 | Hemoglobin a1c level | 23 | 22 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 11 | 11 | $0 |
Insurance plans in this area (ZIP 80231)
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