Christopher Mueller, MD
Cardiovascular Disease · Flagstaff, AZNPI 1295977718
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (46.0%), speaking fees and food and beverage — rather than concentrated in one kind of arrangement. 9 manufacturers reported payments, led by Alnylam Pharmaceuticals Inc. at 49.0% of the total. Reporting peaked in 2019 at $6,302 and has fallen 99.2% since, to $53 in 2025.
Across 30 payments — averaging $323.11 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Alnylam Pharmaceuticals Inc.$5K
- Akcea Therapeutics, Inc.$5K
- Pfizer$97
- Novartis$64
- E.r. Squibb & Sons, L.L.C.$32
- ZOLL Services LLC (a/k/a ZOLL Lifecor Corp)$24
- plus $58 from 3 others
Across 27 payments — averaging $3521.19 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.
- Pfizer$85K
- Alnylam Pharmaceuticals Inc.$10K
What the payments were for
- Consulting fees$4,45546%
- Speaking & faculty fees$4,28044%
- Travel & lodging$2693%
- Food & beverage$6647%
- Education$250%
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 |
|---|---|---|
| Alnylam Pharmaceuticals Inc. | 8 | $4,751 |
| Akcea Therapeutics, Inc. | 7 | $4,667 |
| Pfizer | 6 | $97 |
| Novartis | 3 | $64 |
| E.r. Squibb & Sons, L.L.C. | 2 | $32 |
| ZOLL Services LLC (a/k/a ZOLL Lifecor Corp) | 1 | $24 |
| Edwards Lifesciences | 1 | $23 |
| Merck | 1 | $22 |
| Amgen | 1 | $14 |
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
$9,693 in reported general payments places this provider in the 75th percentile of 423 cardiovascular disease 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 |
|---|---|---|
| VyndamaxTafamidis | 22 | $550,718 |
| EliquisApixaban | 141 | $164,033 |
| XareltoRivaroxaban | 30 | $34,729 |
| EntrestoSacubitril/Valsartan | 23 | $27,720 |
| JardianceEmpagliflozin | 20 | $17,643 |
| Rosuvastatin Calcium | 151 | $3,465 |
| Metoprolol Succinate | 176 | $2,847 |
| Bumetanide | 32 | $1,614 |
| Atorvastatin Calcium | 128 | $1,126 |
| Losartan Potassium | 87 | $850 |
| Carvedilol | 67 | $687 |
| Amlodipine Besylate | 89 | $674 |
| Ezetimibe | 39 | $662 |
| Potassium Chloride | 41 | $619 |
| Diltiazem 24hr Er (Cd)Diltiazem Hcl | 12 | $512 |
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 |
|---|---|---|
| PfizerVyndamax, Eliquis | $97 | $714,751163 claims |
| NovartisEntresto | $64 | $27,72023 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 75th percentile of 423 cardiovascular disease providers in Arizona.
Other cardiovascular disease in Flagstaff
- Omar WaniFlagstaff$244K
- Ashish GuptaPhoenix$1.1M
- Rajkumar SugumaranPhoenix$957K
- Krishnaswami VijayaraghavanScottsdale$927K
- Steven MottlTucson$340K
- Paul UnderwoodScottsdale$259K
- Robert BurkeScottsdale$207K
- Andrew KaplanMesa$204K
- Tabitha MoePhoenix$182K
- Karl KernTucson$174K
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.