Stephen Dieker, MD
NPI 1174731004 · Anesthesiology Physician · Eureka, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Dieker, MD is a Anesthesiology Physician provider in Eureka, CA (NPI 1174731004).
Provider details
- NPI number
- 1174731004
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2007016507 (MO)
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
404 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 263 | $207 |
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 29 | $42 |
| Critical Care, Each Additional 30 Minutes99292 | 26 | $103 |
| Ultrasonic Guidance for Blood Vessel Access76937 | 20 | $13 |
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 18 | $166 |
| Anesthesia for Procedure on Small and Large Bowel Using an Endoscope00813 | 18 | $188 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-21
- Last updated
- 2021-10-21
- Certified
- 2021-10-21
Frequently asked questions
- What is Stephen Dieker's NPI number?
- Stephen Dieker's National Provider Identifier (NPI) is 1174731004, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Dieker's specialty?
- Stephen Dieker is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Dieker located?
- Stephen Dieker's practice location on file with NPPES is 2752 Harrison Ave, Eureka, CA 95501-4738.
- What is Stephen Dieker's phone number?
- The practice phone number listed in the NPPES registry for Stephen Dieker is (707) 268-0190.
- Does Stephen Dieker accept Medicare?
- Stephen Dieker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Dieker's NPI active?
- Yes — Stephen Dieker's NPI (1174731004) is active in the NPPES registry as of the last update on 2021-10-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.