NPPES file of Aug 9, 2026

Jeffrey Rieker, M.D.

Anesthesiology Physician · Corona, CA

Jeffrey Rieker, M.D. is an anesthesiology physician with a practice address in Corona, California, and NPI 1043266802, issued on May 25, 2006. Check the license (California G44862, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1043266802
Name
Jeffrey Rieker
Credential
M.D.
Primary taxonomy
Anesthesiology Physician 207L00000X
License number
G44862 CA
Self-reported in NPPES; status is on the state search
Practice location
800 S Main St, Corona, CA 92882
Phone
(951) 737-4343
Enumerated
May 25, 2006
Record last updated
Jul 13, 2026
Medicaid ID
00G448620 CA
Medicare enrollment
Enrolled (PECOS I20061116000564); accepts Medicare assignment
Medical or professional school
University Of California, San Diego School Of Medicine, 1980
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →

Also registered at 800 S Main St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Charles Addo-Yobo, DOEmergency Medicine Physician1821625955
  2. James Ahn, M.D.Anesthesiology Physician1588641963
  3. Julie Ahn, PA-CPhysician Assistant1346802543
  4. Thomas Assali, DOInternal Medicine Physician1598225062
  5. Cynthia Bailey, P.A.-CPhysician Assistant1316053036
  6. David Bear, M.D.Emergency Medicine Physician1114033883

Verify Jeffrey Rieker in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G44862    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Jeffrey Rieker among 7,571 anesthesiology physician records in California

Jeffrey Rieker, M.D. 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 not. Its NPI, issued in 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 53% newer
  • In a Medicare fileNo · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated1980 · median 2006 among the 4,868 with a school on file
  • Record last updated2026 · 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. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 7,571 in California → Every provider in Corona → Anesthesiology Physician nationwide →

The 8 anesthesiology physician records with the nearest ZIP codes

  1. James Ahn, M.D.Corona, CA 928821588641963
  2. Charles Dai, M.D.Corona, CA 928821730135401
  3. Mahesh Desilva, M.D.Corona, CA 928821114162682
  4. Mina Kazemian, DOCorona, CA 928821306330063
  5. Wendy Martin, MDCorona, CA 928821083686695
  6. Paul Osunwa, MDCorona, CA 928821255911673
  7. Ramin Rahimian, M.D.Corona, CA 928821215171467
  8. Mital Shah, DOCorona, CA 928821538663042

Common questions

What is Jeffrey Rieker, M.D.'s NPI number?

Jeffrey Rieker, M.D.'s National Provider Identifier (NPI) is 1043266802, issued on May 25, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Jeffrey Rieker, M.D. located?

The NPPES record lists a practice address at 800 S Main St, Corona, CA, 92882. Phone: (951) 737-4343. Providers update this record themselves, so call before visiting.

How can I verify Jeffrey Rieker, M.D.'s license?

NPPES lists California license number G44862, 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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.