Roy Opsahl, MD
NPI 1902987522 · Anesthesiology Physician · Sonora, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Roy Opsahl, MD is a Anesthesiology Physician provider in Sonora, CA (NPI 1902987522).
Provider details
- NPI number
- 1902987522
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G70640 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
90 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Anesthesia for Other Procedure on Lower Spine00630 | 22 | $434 |
| Anesthesia for Extensive Surgery on Spine00670 | 18 | $544 |
| Anesthesia for Other Procedure on Lower Abdomen00840 | 14 | $288 |
| Anesthesia for Other Procedure on Skin of Arms, Legs, and Front Body00400 | 12 | $165 |
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 12 | $153 |
| Injection of Anesthetic Agent And/Or Steroid Into Thigh Nerve (femoral Nerve)64447 | 12 | $61 |
Typical Medicare-allowed amounts for these services range $61–$544 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 1101 26th St SGreat Falls, MT 59405-5161Phone: (406) 455-5000
Registry dates
- Enumerated
- 2006-10-18
- Last updated
- 2025-01-17
- Certified
- 2025-01-17
Frequently asked questions
- What is Roy Opsahl's NPI number?
- Roy Opsahl's National Provider Identifier (NPI) is 1902987522, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roy Opsahl's specialty?
- Roy Opsahl is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Roy Opsahl located?
- Roy Opsahl's practice location on file with NPPES is 1000 Greenley Rd, Sonora, CA 95370-5200.
- What is Roy Opsahl's phone number?
- The practice phone number listed in the NPPES registry for Roy Opsahl is (209) 536-3514.
- Does Roy Opsahl accept Medicare?
- Roy Opsahl is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Roy Opsahl's NPI active?
- Yes — Roy Opsahl's NPI (1902987522) is active in the NPPES registry as of the last update on 2025-01-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.