John Christian Oneil, MD
General Practice · Calistoga
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- Not verified
- Not the same as out of network.
- Office
- 1
Offices
1 location
Plan participation
Not verified
We could not verify current plan participation for this doctor. This does not mean they are out of network. Call Dr. Oneil’s office at (707) 942-6888 to ask if they take your plan before you enroll.
California Medical Board record
Licence A118663 · Current
Licensed to practise in California · since 2011 · expires 2026-12-31 · University of Cincinnati College of Medicine.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
Drugs they prescribed that Part D paid
$73
Pharmacies billed $73 in 2024.
This is pharmacy cost, not the office bill, and not what patients paid.
Opioids were 0% of their Part D prescriptions (0 of 13) in 2024. Too few prescriptions to judge: with under about 50 a year, a handful of patients can swing this share.
12 generic and fewer than 11 brand-name prescriptions · $73 in drug cost.
Part D prescriptions only. The opioid rate is opioid prescriptions as a share of all this clinician's Part D prescriptions; surgeons and pain specialists run higher than others, so it is shown against the same specialty.
Year by year
| 2024 | 13 | None | 0% (0) | None | $73 |
| 2023 | 54 | 22 | 0% (0) | None | $784 |
| 2022 | 18 | 11 | 0% (0) | 0% | $306 |
| 2021 | 37 | 20 | 0% (0) | None | $1,772 |
| 2020 | 34 | 13 | 0% (0) | None | $1,921 |
| 2016 | 25 | None | 0% (0) | None | $286 |
| 2015 | 37 | None | 0% (0) | None | $334 |
| 2014 | 72 | None | None | 0% | $717 |
| 2013 | 39 | 12 | None | None | $541 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
See the drugs prescribed each year
2015: 1 drug
| Amlodipine Besylate | 11 | $70 | $6 |
2014: 5 drugs
| Gabapentin | 14 | $182 | $13 |
| Baclofen | 14 | $177 | $13 |
| Sertraline | 11 | $109 | $10 |
| Amlodipine Besylate | 12 | $84 | $7 |
| Hydrochlorothiazide | 15 | $65 | $4 |
Professional record
- NPI
- 1952573826
- Licence
- CA A118663California A118663: Current · expires 2026-12-31
More record details
- Sole proprietor
- Yes
- Taxonomy
- General practice (208D00000X)
- Mailing address
- Po Box 1793, Middletown, CA, 95461
- NPI first listed
- 2008-03-31
- NPI last updated
- 2026-07-02
- NPI record certified
- 2026-07-02
This is when the NPI record was last certified, not a medical board exam.
Extra NPI addresses: 2425 Enborg Ln, San Jose, CA, 95128