Nancy Collop, MD
Sleep Medicine · Atlanta, GANPI 1396799482
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $18,000 of the $27,590 with a category attached, or 65.2%. ZOLL Respicardia, Inc. accounts for 85.1% of it on its own, with 3 other manufacturers making up the rest. 2025 is the largest year on record at $20,271, 6.8 times the $3,000 reported in 2021. Among sleep medicine clinicians in GA with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 22 payments — averaging $1254.10 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- ZOLL Respicardia, Inc.$23K
- Cipla USA Inc.$3K
- Eli Lilly$1K
- Itamar Medical Inc$8
Across 10 payments — averaging $4170.09 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.
- ZOLL Respicardia, Inc.$42K
What the payments were for
- Consulting fees$5,90021%
- Speaking & faculty fees$18,00065%
- Travel & lodging$2,1548%
- Food & beverage$1,5366%
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 |
|---|---|---|
| ZOLL Respicardia, Inc. | 18 | $23,482 |
| Cipla USA Inc. | 2 | $3,000 |
| Eli Lilly | 1 | $1,100 |
| Itamar Medical 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.
- remede System$23,293
- MOUNJARO$1,100
How this compares
$27,590 in reported general payments places this provider in the 95th percentile of 50 sleep medicine providers in Georgia.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Sodium Oxybate | 12 | $229,281 |
| XywavSodium,calcium,mag,pot Oxybate | 11 | $176,587 |
| SunosiSolriamfetol Hcl | 13 | $20,453 |
| Pramipexole DihydrochloridePramipexole Di-Hcl | 18 | $543 |
| Methadone Hcl | 19 | $401 |
| Gabapentin | 30 | $320 |
| Ropinirole Hcl | 17 | $180 |
| Zolpidem Tartrate | 23 | $172 |
| Pregabalin | 28 | $172 |
| Clonazepam | 23 | $54 |
Paid to pharmacies, not to this prescriber.
Other sleep medicine in Atlanta
- Murad AssaadAtlanta$139K
- Scott LeibowitzAtlanta$22K
- Chantale BransonAtlanta$17K
- Romy HoqueAtlanta$10K
- Jason YuAtlanta$3K
- Susan MuchaAtlanta$3K
- Abul MatinAtlanta$2K
- Paul ZoltyAtlanta$2K
- Samuel MickelsonAtlanta$1K
- Crystal CassimereAtlanta$631
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.