Jonathan Claassen, MD
NPI 1780799114 · Anesthesiology Physician · Medford, OR
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan Claassen, MD is a Anesthesiology Physician provider in Medford, OR (NPI 1780799114).
Provider details
- NPI number
- 1780799114
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A87730 (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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
179 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 Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 26 | $119 |
| Anesthesia for Procedure for Total Knee Joint Replacement01402 | 25 | $269 |
| Injection of Anesthetic Agent And/Or Steroid Into Thigh Nerve (femoral Nerve)64447 | 24 | $56 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 22 | $108 |
| Anesthesia for Extensive Surgery on Spine00670 | 13 | $489 |
| Anesthesia for Exam of Colon Using an Endoscope00812 | 13 | $85 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-19
- Last updated
- 2012-01-06
Frequently asked questions
- What is Jonathan Claassen's NPI number?
- Jonathan Claassen's National Provider Identifier (NPI) is 1780799114, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Claassen's specialty?
- Jonathan Claassen is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan Claassen located?
- Jonathan Claassen's practice location on file with NPPES is 842 E Main St, Medford, OR 97504-7134.
- What is Jonathan Claassen's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Claassen is (541) 773-7273.
- Does Jonathan Claassen accept Medicare?
- Jonathan Claassen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jonathan Claassen's NPI active?
- Yes — Jonathan Claassen's NPI (1780799114) is active in the NPPES registry as of the last update on 2012-01-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.