Regan Holdridge, MD
Hematology & Oncology · Henderson, NVNPI 1093937054
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 92.9% of the total across 77 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 18 manufacturers reported payments, led by Daiichi Sankyo Inc. at 36.3% of the total. 2025 is the largest year on record at $935, 8.1 times the $116 reported in 2020. That places this record below the midpoint for hematology & oncology clinicians in NV, where the typical reported total is $9,657.
Across 77 payments — averaging $20.58 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Daiichi Sankyo Inc.$575
- Novartis$224
- AstraZeneca$125
- Beone Medicines USA, Inc.$116
- Gilead$97
- Pfizer$79
- plus $368 from 12 others
Across 46 payments — averaging $11,452 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.
- E.r. Squibb & Sons, L.L.C.$480K
- Pfizer$27K
- Pharmacyclics LLC, An Abbvie Company$9K
- Tesaro, Inc.$8K
- AbbVie$2K
- AstraZeneca$226
What the payments were for
- Food & beverage$1,47393%
- Education$1127%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 |
|---|---|---|
| Daiichi Sankyo Inc. | 36 | $575 |
| Novartis | 10 | $224 |
| AstraZeneca | 5 | $125 |
| Beone Medicines USA, Inc. | 4 | $116 |
| Gilead | 4 | $97 |
| Pfizer | 4 | $79 |
| Sobi, Inc | 2 | $69 |
| Johnson & Johnson | 2 | $54 |
| Exelixis Inc. | 1 | $40 |
| Tempus AI, Inc | 1 | $26 |
| Beigene USA, Inc. | 1 | $26 |
| Bristol Myers Squibb | 1 | $24 |
| Genentech USA, Inc. | 1 | $24 |
| Regeneron Healthcare Solutions, Inc. | 1 | $23 |
| GSK | 1 | $22 |
| Bayer | 1 | $21 |
| Astellas Pharma US Inc | 1 | $20 |
| Adaptive Biotechnologies Corporation | 1 | $19 |
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.
- Enhertu$116
How this compares
$1,585 in reported general payments places this provider in the 20th percentile of 82 hematology & oncology providers in Nevada.
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 |
|---|---|---|
| VenclextaVenetoclax | 19 | $263,965 |
| IbrancePalbociclib | 13 | $214,004 |
| VerzenioAbemaciclib | 13 | $196,269 |
| XareltoRivaroxaban | 60 | $65,660 |
| EliquisApixaban | 17 | $25,769 |
| Anastrozole | 303 | $5,955 |
| Exemestane | 18 | $1,428 |
| Letrozole | 51 | $861 |
| Tamoxifen Citrate | 24 | $683 |
| Celecoxib | 11 | $652 |
| Acyclovir | 25 | $452 |
| Oxycodone Hcl | 19 | $436 |
| Warfarin Sodium | 55 | $423 |
| Gabapentin | 21 | $390 |
| Fluconazole | 16 | $388 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| PfizerIbrance, Eliquis | $79 | $239,77330 claims |
| Johnson & JohnsonXarelto | $54 | $65,66060 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 20th percentile of 82 hematology & oncology providers in Nevada.
Other hematology & oncology in Henderson
- Anthony NguyenHenderson$210K
- Russell GollardHenderson$105K
- Rupesh ParikhHenderson$67K
- Ramalingam RatnasabapathyHenderson$25K
- Stephani ChristensenHenderson$10K
- Resty TibayanHenderson$10K
- Nutan ParikhHenderson$10K
- Muhammad GhaniHenderson$9K
- Khoi DaoHenderson$8K
- Gilbert NyamuswaHenderson$4K
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.