John Demare, DO
Family Medicine · Sterling Heights, MINPI 1427031756
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 79 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 Amgen at 25.6% of the total. 2025 is the largest year on record at $362, 2.9 times the $126 reported in 2019.
Across 79 payments — averaging $16.34 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Amgen$330
- Exact Sciences$160
- Novo Nordisk$147
- Lilly USA, LLC$124
- Novartis$75
- AstraZeneca$66
- plus $388 from 12 others
What the payments were for
- Food & beverage$1,291100%
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 |
|---|---|---|
| Amgen(2 entities) | 22 | $330 |
| Exact Sciences | 9 | $160 |
| Novo Nordisk | 8 | $147 |
| Lilly USA, LLC | 7 | $124 |
| Novartis | 4 | $75 |
| AstraZeneca | 4 | $66 |
| Esperion Therapeutics, Inc. | 4 | $65 |
| Boehringer Ingelheim | 4 | $57 |
| GSK | 3 | $45 |
| Pfizer | 3 | $42 |
| Alk-abello, Inc | 2 | $35 |
| IBSA Pharma Inc. | 2 | $29 |
| Amarin Pharma, Inc. | 2 | $26 |
| Boston Scientific | 1 | $25 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 1 | $20 |
| Actelion Pharmaceuticals US, Inc. | 1 | $16 |
| Phathom Pharmaceuticals, Inc. | 1 | $15 |
| Dermira, Inc. | 1 | $14 |
How this compares
$1,291 in reported general payments places this provider in the 75th percentile of 3,945 family medicine 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 |
|---|---|---|
| XareltoRivaroxaban | 11 | $16,545 |
| Rosuvastatin Calcium | 219 | $4,309 |
| Terazosin Hcl | 73 | $2,046 |
| Ezetimibe | 61 | $2,038 |
| Valsartan | 26 | $2,011 |
| Losartan Potassium | 116 | $1,954 |
| Atorvastatin Calcium | 96 | $1,480 |
| Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide | 47 | $1,399 |
| Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide | 15 | $1,168 |
| Risedronate Sodium | 12 | $976 |
| Omeprazole | 55 | $964 |
| Amlodipine Besylate | 85 | $686 |
| Metoprolol Succinate | 27 | $633 |
| Simvastatin | 47 | $481 |
| Alendronate Sodium | 32 | $480 |
Paid to pharmacies, not to this prescriber.
Other family medicine in Sterling Heights
- Jeffrey DeitchSterling Heights$197K
- Steven MargolisSterling Heights$90K
- Mark RosenbergSterling Heights$17K
- Loren ChudlerSouthfield$1.3M
- Paul BensonBerkley$779K
- Matt RosenbergJackson$550K
- Steve LasaterSaint Johns$291K
- Mary DagenGrand Rapids$265K
- Farhan BhattiLansing$230K
- Sukhpreet SinghPlymouth$173K
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.