Michael Bullen, MD
Obstetrics & Gynecology · Knoxville, TNNPI 1578646436
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $12,375 of the $13,433 with a category attached, or 92.1%. Merck accounts for 74.5% of it on its own, with 16 other manufacturers making up the rest. Reporting peaked in 2019 at $4,510 and has fallen 94.1% since, to $266 in 2025. Among obstetrics & gynecology clinicians in TN 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 48 payments — averaging $279.86 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Merck$10K
- Organon$3K
- Mayne Pharma Commercial LLC$186
- Exeltis, USA Inc.$103
- AbbVie$58
- Hologic Sales And Service, LLC$54
- plus $232 from 11 others
What the payments were for
- Speaking & faculty fees$12,37592%
- Travel & lodging$3813%
- Food & beverage$6655%
- Education$120%
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 |
|---|---|---|
| Merck | 10 | $10,006 |
| Organon | 4 | $2,794 |
| Mayne Pharma Commercial LLC | 6 | $186 |
| Exeltis, USA Inc. | 7 | $103 |
| AbbVie(2 entities) | 4 | $58 |
| Hologic Sales And Service, LLC | 3 | $54 |
| Daiichi Sankyo Inc. | 2 | $39 |
| Sage Therapeutics, LLC | 2 | $35 |
| Astellas Pharma US Inc | 2 | $29 |
| Coopersurgical, Inc. | 1 | $22 |
| Pfizer | 1 | $22 |
| Covidien LP | 1 | $19 |
| Bayer | 1 | $16 |
| Avion Pharmaceuticals | 1 | $14 |
| AMAG Pharmaceuticals, Inc. | 1 | $12 |
| Therapeuticsmd, Inc. | 1 | $12 |
| Lupin Inc. | 1 | $11 |
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
$13,433 in reported general payments places this provider in the 95th percentile of 763 obstetrics & gynecology providers in Tennessee.
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 |
|---|---|---|
| Estradiol | 59 | $4,610 |
| Clobetasol Propionate | 16 | $243 |
| Tarina Fe 1-20 EqNorethindrone-E.Estradiol-Iron | 13 | $158 |
Paid to pharmacies, not to this prescriber.
Other obstetrics & gynecology in Knoxville
- Larry FieldsKnoxville$323K
- Ramona ScottKnoxville$25K
- Lowell McCauleyKnoxville$21K
- Rosalind CadiganKnoxville$10K
- Nikki ZiteKnoxville$10K
- Kimberly RobertsKnoxville$9K
- Sudha NairKnoxville$8K
- Grover MayJohnson City$916K
- John GreenElizabethton$878K
- Brent LaingElizabethton$480K
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.