Quick answers
- Does George J. Counelis accept Medicare assignment?
- Medicare's clinician data says George J. Counelis may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does George J. Counelis see?
- In 2024, CMS data shows 166 Original Medicare patients and 416 services for George J. Counelis. This counts Original Medicare only and measures volume, not quality.
- What is George J. Counelis's NPI number?
- 1437261534. 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 George J. Counelis, 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 | 166 |
|---|---|
| Services billed to Medicare | 416 |
| Different services or procedures | 42 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)78 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)72 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)68 services
- Fusion of additional segment of spine (22614)29 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)26 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 blood pressure75%
- High cholesterol75%
- Arthritis58%
- Stroke or mini-stroke37%
- Anxiety36%
- Chronic kidney disease36%
Hospitals where George J. Counelis works
Medicare's Facility Affiliation Data lists George J. Counelis 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.
- John Muir Medical Center - Concord CampusConcord, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050496
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050180
- Portneuf Medical CenterPocatello, ID · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 130028
- San Ramon Regional Medical CenterSan Ramon, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050689
Practice locations
Addresses where George J. Counelis is enrolled with Medicare (CMS data updated October 2, 2026).
- 100 N Wiget, Suite 160Walnut Creek, CA 94598
- 100 N Wiget Ln, Suite 160Walnut Creek, CA 94598 (925) 280‑8200
- 1601 Ygnacio Valley Rd, Suite 100Walnut Creek, CA 94598 (925) 939‑3000
- 1601 Ygnacio Vly RdWalnut Creek, CA 94596
- 777 Hospital WayPocatello, ID 83201 (208) 239‑2260
Group practices
Medicare enrollment lists George J. Counelis as a member of these groups (CMS data updated October 2, 2026).
- Pocatello Health Services LLC175 clinicians in the group
- John Muir Trauma Physicians Billing Service113 clinicians in the group
Specialties
- Neurosurgeryprimary
Other neurosurgeons in Walnut Creek
Clinicians with the same Medicare primary specialty in Walnut Creek, CA — not a recommendation.
Other clinicians in Pocatello Health Services LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tufts University School Of Medicine |
| Graduation year | 1995 (31 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1437261534 |
| 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