Sairam Parthasarathy, MD
Sleep Medicine · Tucson, AZNPI 1598877474
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $38,588 of the $48,072 with a category attached, or 80.3%. Jazz Pharmaceuticals Inc. accounts for 69.6% of it on its own, with 8 other manufacturers making up the rest. Reporting peaked in 2023 at $14,988 and has fallen 75.5% since, to $3,667 in 2025. Among sleep medicine clinicians in AZ with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 44 payments — averaging $1092.54 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Jazz Pharmaceuticals Inc.$33K
- ZOLL Respicardia, Inc.$6K
- AbbVie$5K
- Fisher & Paykel Healthcare Inc$4K
- Philips North America LLC$155
- ZOLL Medical Corporation$67
- plus $113 from 3 others
Across 16 payments — averaging $9123.41 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.
- Philips North America LLC$95K
- Regeneron$51K
What the payments were for
- Consulting fees$38,58880%
- Speaking & faculty fees$2,7506%
- Travel & lodging$4,72610%
- Food & beverage$2,0084%
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 |
|---|---|---|
| Jazz Pharmaceuticals Inc. | 28 | $33,481 |
| ZOLL Respicardia, Inc. | 5 | $5,762 |
| AbbVie | 1 | $4,888 |
| Fisher & Paykel Healthcare Inc | 4 | $3,607 |
| Philips North America LLC | 2 | $155 |
| ZOLL Medical Corporation | 1 | $67 |
| Mylan Specialty L.p. | 1 | $53 |
| Viatris Specialty LLC | 1 | $30 |
| Sanofi | 1 | $29 |
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.
- FISHER & PAYKEL HEALTHCARE$17,639
- SUNOSI$16,200
- XYREM$6,831
- remede System$5,681
- Mask$115
- NightBalance Und$115
How this compares
$48,072 in reported general payments places this provider in the 90th percentile of 47 sleep medicine providers in Arizona.
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 |
|---|---|---|
| Azelastine Hcl | 25 | $844 |
| Fluticasone Propionate | 21 | $198 |
Paid to pharmacies, not to this prescriber.
Other sleep medicine in Tucson
- Jyotsna SahniTucson$38K
- Aynur OkcayTucson$14K
- Salma PatelTucson$4K
- Daniel CombsTucson$969
- Erick LopezTucson$770
- Mark MecikalskiTucson$226
- Ruchir PatelScottsdale$374K
- Joyce Lee-IannottiPhoenix$126K
- Chad RuoffScottsdale$55K
- Jose de OcampoScottsdale$46K
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.