Quick answers
- Does Conor W. O Neill accept Medicare assignment?
- Yes. Medicare's clinician data says Conor W. O Neill accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Conor W. O Neill see?
- In 2024, CMS data shows 395 Original Medicare patients and 1,033 services for Conor W. O Neill. This counts Original Medicare only and measures volume, not quality.
- What is Conor W. O Neill's NPI number?
- 1326177171. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Conor W. O Neill, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 395 |
|---|---|
| Services billed to Medicare | 1,033 |
| Different services or procedures | 32 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)120 services
- Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)119 services
- Injection of lower or sacral spine facet joint using imaging guidance, single level (64493)97 services
- Injection of lower or sacral spine facet joint using imaging guidance, second level (64494)87 services
- Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level (64483)74 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- Arthritis75%
- High blood pressure70%
- Ischemic heart disease28%
- Anxiety26%
- Chronic kidney disease25%
Hospitals where Conor W. O Neill works
Medicare's Facility Affiliation Data lists Conor W. O Neill at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- UCSF Medical CenterSan Francisco, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050454
Practice locations
Addresses where Conor W. O Neill is enrolled with Medicare (CMS data updated October 2, 2026).
- 2801 K St, Suite 410Sacramento, CA 95816 (916) 389‑7100
- 400 Parnassus AveSan Francisco, CA 94143 (415) 476‑1000
- 400 Parnassus Ave, McB300San Francisco, CA 94143 (415) 476‑1000
Group practices
Medicare enrollment lists Conor W. O Neill as a member of these groups (CMS data updated October 2, 2026).
- University of California San Francisco1,839 clinicians in the group
- UCSF Medical Group Business Services1,598 clinicians in the group
- Ncsra Medical Corporation4 clinicians in the group
Specialties
Find other Interventional Pain Management doctors in California →
Other interventional pain specialists in Sacramento
Clinicians with the same Medicare primary specialty in Sacramento, CA — not a recommendation.
Other clinicians in University of California San Francisco
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Washington University School Of Medicine |
| Graduation year | 1985 (41 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1326177171 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians