Michael Dao, MD
Internal Medicine · Garden Grove, CANPI 1437321932
Payments from drug & device makers
Across 3,069 payments — averaging $807.22 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Alnylam Pharmaceuticals Inc.$1.1M
- AstraZeneca$1M
- Noven Pharmaceuticals, Inc.$109K
- Adare Pharmaceuticals, Inc.$27K
- Astrazeneca UK Limited$27K
- Janssen Research & Development, LLC$21K
- plus $118K from 54 others
What the payments were for
- Consulting fees$3,0505%
- Speaking & faculty fees$5,92511%
- Travel & lodging$40%
- Food & beverage$46,14183%
- Education$4761%
- Gifts$180%
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.
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.
How this compares
$2,477,359 in reported general payments places this provider in the 95th percentile of 13,581 internal medicine providers in California.
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 |
|---|---|---|
| FarxigaDapagliflozin Propanediol | 1,002 | $1,032,128 |
| JardianceEmpagliflozin | 686 | $612,109 |
| ProliaDenosumab | 295 | $492,393 |
| VascepaIcosapent Ethyl | 980 | $491,062 |
| CreonLipase/Protease/Amylase | 371 | $456,146 |
| Diclofenac Sodium | 1,079 | $434,038 |
| ZenpepLipase/Protease/Amylase | 240 | $416,836 |
| KerendiaFinerenone | 378 | $415,730 |
| Evenity (2 Syringes)Romosozumab-Aqqg | 130 | $309,803 |
| LinzessLinaclotide | 347 | $276,609 |
| GemtesaVibegron | 465 | $243,779 |
| Trelegy ElliptaFluticasone/Umeclidin/Vilanter | 321 | $208,939 |
| OzempicSemaglutide | 203 | $201,838 |
| MounjaroTirzepatide | 174 | $186,531 |
| Repatha SureclickEvolocumab | 298 | $168,609 |
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 |
|---|---|---|
| AstraZenecaFarxiga, Breztri Aerosphere, Brilinta | $1,040,851 | $1,214,2001,303 claims |
| AbbVieCreon, Linzess, Restasis, Namzaric | $14,820 | $908,859932 claims |
| AmgenProlia, Evenity (2 Syringes), Otezla | $4,890 | $859,652437 claims |
| Boehringer IngelheimJardiance, Tradjenta, Trijardy Xr | $1,581 | $845,059985 claims |
| Aimmune Therapeutics, Inc.Zenpep | $690 | $416,836240 claims |
| BayerKerendia | $18,400 | $415,730378 claims |
| Novo NordiskOzempic, Rybelsus | $3,250 | $353,855316 claims |
| Lilly USA, LLCMounjaro, Trulicity | $1,306 | $295,298282 claims |
| GSKTrelegy Ellipta, Breo Ellipta | $737 | $255,654437 claims |
| Johnson & JohnsonProcrit, Xarelto | $809 | $135,63491 claims |
| GileadVemlidy | $2,807 | $130,52692 claims |
| MerckJanuvia | $448 | $122,402122 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 95th percentile of 13,581 internal medicine providers in California.
Other internal medicine in Garden Grove
- Andrew ChengSouth San Francisco$55.1M
- Joel NeutelTustin$34.9M
- Donald BrandonSan Diego$34M
- William TownerLos Angeles$27.4M
- Rahul AggarwalSan Francisco$24M
- Masoud AzizadNorthridge$21.1M
- Helen StaceyWalnut Creek$20.4M
- Rohit Loombala Jolla$15.1M
- Zeid KayaliColton$14.2M
- Alexandra DrakakiSanta Monica$14.2M
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.