Derek Susalla
Physician Assistant · Rochester Hills, MINPI 1508392796
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $182,872 of the $241,534 with a category attached, or 75.7%. 14 manufacturers reported payments, led by Axsome Therapeutics, Inc. at 43.4% of the total. 2025 is the largest year on record at $115,692, more than ten times the $298 reported in 2021. Among physician assistant clinicians in MI 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 575 payments — averaging $420.06 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Axsome Therapeutics, Inc.$105K
- Supernus Pharmaceuticals, Inc.$93K
- AbbVie$38K
- Otsuka America Pharmaceutical, Inc.$4K
- Tris Pharma Inc$587
- Lundbeck LLC$523
- plus $1K from 8 others
What the payments were for
- Consulting fees$28,46412%
- Speaking & faculty fees$182,87276%
- Travel & lodging$20,3668%
- Food & beverage$9,8334%
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 |
|---|---|---|
| Axsome Therapeutics, Inc. | 181 | $104,754 |
| Supernus Pharmaceuticals, Inc. | 198 | $93,145 |
| AbbVie | 84 | $37,775 |
| Otsuka America Pharmaceutical, Inc. | 23 | $3,666 |
| Tris Pharma Inc | 18 | $587 |
| Lundbeck LLC | 31 | $523 |
| Neos Therapeutics, LP | 8 | $291 |
| Corium, LLC | 16 | $245 |
| Alkermes, Inc. | 3 | $141 |
| Takeda Pharmaceuticals U.S.A., Inc. | 8 | $138 |
| Novo Nordisk | 1 | $124 |
| Johnson & Johnson | 1 | $80 |
| Teva Pharmaceuticals USA, Inc. | 2 | $47 |
| Ironshore Pharmaceuticals Inc. | 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.
- Auvelity$101,815
- QELBREE$90,141
- VRAYLAR$33,750
- REXULTI$473
- Dyanavel XR$216
- Adzenys XR-ODT$175
- Wegovy$124
- Quillichew ER$110
- Quillivant$110
- Azstarys$107
- VIVITROL$107
How this compares
$241,534 in reported general payments places this provider in the 95th percentile of 5,453 physician assistant providers in Michigan.
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 |
|---|---|---|
| AuvelityDextromethorphan Hbr/Bupropion | 42 | $45,733 |
| VyvanseLisdexamfetamine Dimesylate | 21 | $10,186 |
| Lurasidone Hcl | 12 | $7,227 |
| Lisdexamfetamine Dimesylate | 19 | $4,747 |
| Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine | 112 | $4,103 |
| Bupropion XlBupropion Hcl | 153 | $2,931 |
| Trazodone Hcl | 111 | $1,872 |
| Aripiprazole | 65 | $1,783 |
| Duloxetine Hcl | 61 | $1,744 |
| Methylphenidate ErMethylphenidate Hcl | 16 | $1,397 |
| Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine | 73 | $1,107 |
| Lamotrigine | 74 | $891 |
| Naltrexone Hcl | 20 | $798 |
| Venlafaxine Hcl ErVenlafaxine Hcl | 24 | $791 |
| Fluoxetine Hcl | 26 | $639 |
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 |
|---|---|---|
| Axsome Therapeutics, Inc.Auvelity | $104,754 | $45,73342 claims |
| Takeda Pharmaceuticals U.S.A., Inc.Vyvanse | $138 | $10,18621 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 5,453 physician assistant providers in Michigan.
Other physician assistant in Rochester Hills
- Kari EwaltRochester Hills$31K
- Fadya SisoRochester Hills$15K
- Christopher DiscennaRochester Hills$13K
- Sarang PatelRoyal Oak$660K
- Beth SweneyAda$617K
- Zainab JishiCanton$596K
- Taylor HennrickAdrian$430K
- Erin van DykeGrand Rapids$346K
- Ashley AldridgeAnn Arbor$298K
- Gabrielle DamoreRoyal Oak$200K
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.