Sunil Nayak
Pediatric Endocrinology · Greenwood Village, CONPI 1528166923
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $9,650 of the $14,254 with a category attached, or 67.7%. Tandem Diabetes Care, Inc. accounts for 68.5% of it on its own, with 22 other manufacturers making up the rest. Reporting peaked in 2021 at $6,126 and has fallen 81.8% since, to $1,116 in 2025.
Across 161 payments — averaging $88.53 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Tandem Diabetes Care, Inc.$10K
- Pfizer$1K
- Novo Nordisk$613
- Ascendis Pharma Endocrinology Inc$486
- Medtronic$310
- Abbott$294
- plus $2K from 17 others
Across 958 payments — averaging $725.97 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Medtronic$194K
- Pfizer$180K
- AbbVie$174K
- Novo Nordisk AS$138K
- Novo Nordisk Health Care AG$10K
- Aeterna Zentaris Inc.$600
What the payments were for
- Speaking & faculty fees$9,65068%
- Travel & lodging$7365%
- Food & beverage$3,66026%
- Education$2091%
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| Tandem Diabetes Care, Inc. | 39 | $9,763 |
| Pfizer | 15 | $1,245 |
| Novo Nordisk | 19 | $613 |
| Ascendis Pharma Endocrinology Inc | 13 | $486 |
| Medtronic(2 entities) | 8 | $310 |
| Abbott | 6 | $294 |
| AbbVie | 11 | $279 |
| Amphastar Pharmaceuticals, Inc. | 7 | $267 |
| BETA Bionics, Inc. | 5 | $206 |
| Sanofi-aventis U.S. LLC | 7 | $160 |
| Neurocrine Biosciences, Inc. | 3 | $103 |
| Tolmar, Inc. | 4 | $95 |
| Insulet Corporation | 5 | $71 |
| Kyowa Kirin, Inc. | 3 | $63 |
| Xeris Pharmaceuticals, Inc. | 3 | $53 |
| Lilly USA, LLC | 3 | $51 |
| Dexcom, Inc. | 2 | $48 |
| Azurity Pharmaceuticals, Inc. | 2 | $41 |
| Eton Pharmaceuticals, Inc. | 2 | $37 |
| Soleno Therapeutics, Inc. | 1 | $25 |
| Zealand Pharma US, Inc. | 1 | $20 |
| Sequel Med Tech, LLC | 1 | $16 |
| Travere Therapeutics, Inc. | 1 | $8 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
- t-slim insulin pump$6,650
- t:slim X2 insulin pump$3,000
- GENOTROPIN$984
- iLet Bionic Pancreas$353
- Norditropin$243
- Sogroya$232
- Freestyle CoPilot Health Management System$200
- iLet Insulin Infusion Kit Inset$118
- iLet Insulin Infusion Kit Contact Detach$118
- SKYTROFA$113
How this compares
$14,254 in reported general payments places this provider in the 70th percentile of 34 pediatric endocrinology providers in Colorado.
Other pediatric endocrinology in Greenwood Village
- Aristides ManiatisCentennial$655K
- Kimberly SimmonsAurora$323K
- Gregory ForlenzaAurora$200K
- Marian RewersAurora$178K
- Raj WadwaAurora$61K
- Philip ZeitlerAurora$58K
- Andrea SteckAurora$33K
- Erin CobryAurora$15K
- Georgeanna KlingensmithAurora$14K
- Melanie CreeAurora$13K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.