Douglas Colquhoun, MD
Anesthesiology · Ann Arbor, MINPI 1255697827
Payments from drug & device makers
What this record shows
That places this record below the midpoint for anesthesiology clinicians in MI, where the typical reported total is $83.
No general payments reported
No drug or device maker reported general payments to this provider for 2019–2025. That is a common and unremarkable result.
Across 7 payments — averaging $67,090 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.
- Merck$270K
- GE HealthCare$200K
How this compares
$0 in reported general payments places this provider in the 20th percentile of 1,299 anesthesiology 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.
Other anesthesiology in Ann Arbor
- Neal DuggalAnn Arbor$206K
- David HovordAnn Arbor$48K
- Lauren RicheyAnn Arbor$11K
- Bernard JiangAnn Arbor$9K
- Michael McCaughanAnn Arbor$4K
- Wei LauAnn Arbor$4K
- Stephan FrangakisAnn Arbor$3K
- Ayesha ZaheerAnn Arbor$3K
- John PappasRoyal Oak$112K
- Jay GlobersonSouthfield$79K
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.