Stephen R. Dieker, MD
Anesthesiology Physician · Eureka, CA
Stephen R. Dieker, MD is an anesthesiology physician with a practice address in Eureka, California, and NPI 1174731004, issued on May 21, 2007. Check the license (California A116949, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stephen R. Dieker
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License numbers
- A116949 CA
2007016507 MO
Self-reported in NPPES; status is on the state search - Practice location
- 2752 Harrison Ave, Eureka, CA 95501
- Phone
- (707) 268-0190
- Enumerated
- May 21, 2007
- Record last updated
- Oct 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (707) 445-3076
- Medicare enrollment
- Enrolled (PECOS I20110930000515); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
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Verify Stephen R. Dieker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A116949Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 2 group practices
- Providence Medical FoundationSanta Rosa, CA
- US Anesthesia Partners OF Colorado IncColorado Springs, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen R. Dieker among 7,571 anesthesiology physician records in California
Stephen R. Dieker, MD is one of 7,571 anesthesiology physician records with a practice address in California. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 47% of them.
- NPI issued2007 · 47% of these records are older, 43% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2005 · median 2006 among the 4,868 with a school on file
- Record last updated2021 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anesthesiology Physician providers in California
There are 7,571 anesthesiology physician records in California.
All 7,571 in California → Every provider in Eureka → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Joshua Bondurant, DOEureka, CA 955011053598060
- Kevin Brady, MDEureka, CA 955011528002045
- Ishai Erez, M.D.Eureka, CA 955011124335625
- Robert Horseman, M.D.Eureka, CA 955011144336264
- Jeffrey Johnston, M.D.Eureka, CA 955011356598189
- Dennis KnoernschildEureka, CA 955011366731622
- Richard Moore, M.D.Eureka, CA 955011043326168
- Susan Rydz, M.D.Eureka, CA 955011154696516
Common questions
What is Stephen R. Dieker, MD's NPI number?
Stephen R. Dieker, MD's National Provider Identifier (NPI) is 1174731004, issued on May 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Stephen R. Dieker, MD located?
The NPPES record lists a practice address at 2752 Harrison Ave, Eureka, CA, 95501. Phone: (707) 268-0190. Providers update this record themselves, so call before visiting.
How can I verify Stephen R. Dieker, MD's license?
NPPES lists California license number A116949, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.