Don Nishiguchi, MD
Obstetrics · Valencia, CANPI 1043368277
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 95.1% of the total across 197 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 31 manufacturers reported payments, led by AbbVie at 34.7% of the total. Reporting peaked in 2023 at $762 and has fallen 90.3% since, to $74 in 2025.
Across 197 payments — averaging $16.80 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$1K
- Exeltis, USA Inc.$324
- Mayne Pharma Commercial LLC$250
- Avion Pharmaceuticals$156
- Therapeuticsmd, Inc.$142
- AMAG Pharmaceuticals, Inc.$136
- plus $1K from 25 others
What the payments were for
- Consulting fees$251%
- Food & beverage$3,14995%
- Education$1364%
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 |
|---|---|---|
| AbbVie(2 entities) | 61 | $1,148 |
| Exeltis, USA Inc. | 20 | $324 |
| Mayne Pharma Commercial LLC | 20 | $250 |
| Avion Pharmaceuticals | 16 | $156 |
| Therapeuticsmd, Inc. | 7 | $142 |
| AMAG Pharmaceuticals, Inc. | 7 | $136 |
| Evofem Biosciences, Inc. | 9 | $121 |
| Myovant Sciences Inc. | 8 | $121 |
| Sumitomo Pharma America, Inc. | 6 | $116 |
| Pfizer | 4 | $80 |
| Organon | 4 | $70 |
| Agile Therapeutics, Inc. | 3 | $65 |
| Bayer | 3 | $59 |
| Hologic Sales And Service, LLC | 4 | $59 |
| Coopersurgical, Inc. | 3 | $49 |
| Astellas Pharma US Inc | 2 | $47 |
| Daiichi Sankyo Inc. | 2 | $42 |
| Ascend Therapeutics US, LLC | 2 | $39 |
| Merck | 2 | $36 |
| Biohaven Pharmaceuticals, Inc. | 2 | $36 |
| Lupin Inc. | 2 | $26 |
| Medtronic | 1 | $25 |
| Exact Sciences | 1 | $25 |
| Duchesnay USA Incorporated | 1 | $21 |
| Amgen | 1 | $20 |
| Biohaven Pharmaceutical Holding Company Ltd. | 1 | $19 |
| Johnson & Johnson | 1 | $18 |
| Mission Pharmacal Company | 1 | $17 |
| Shield Therapeutics Inc | 1 | $15 |
| Channel Medsystems, Inc. | 1 | $14 |
| Zyla Life Sciences, 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
$3,310 in reported general payments places this provider in the 80th percentile of 119 obstetrics providers in California.
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 | 48 | $6,530 |
| ProgesteroneProgesterone, Micronized | 32 | $1,076 |
| ValacyclovirValacyclovir Hcl | 30 | $1,043 |
| Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip | 19 | $459 |
| Acyclovir | 11 | $267 |
| Cephalexin | 12 | $44 |
| Fluconazole | 12 | $31 |
Paid to pharmacies, not to this prescriber.
Other obstetrics in Valencia
- Peter WangGarden Grove$428K
- Douglas Woelkersla Jolla$57K
- Richard FriedmanBurbank$18K
- Jennifer ByerSanta Rosa$17K
- Omar AzizEl Centro$14K
- Frederica LofquistSan Francisco$14K
- Craig SafferSan Diego$14K
- Caitlyn PainterSan Francisco$10K
- Kay DanielsStanford$9K
- Joie RussoEncino$8K
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.