E Michael Thelen, MD
Rheumatology Physician · Fair Oaks, CA
E Michael Thelen, MD is a rheumatology physician with a practice address in Fair Oaks, California, and NPI 1205811098, issued on Dec 14, 2005. Check the license (California G27470, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- E Michael Thelen
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- G27470 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4944 Sunrise Blvd, Fair Oaks, CA 95628
- Phone
- (916) 966-5171
- Enumerated
- Dec 14, 2005
- Record last updated
- Sep 17, 2010 (not updated in 16 years: call before relying on the address or phone)
- Medicaid ID
- 00G27470 CA
- Entity
- Type 1 · individual
Also registered at 4944 Sunrise Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify E Michael Thelen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G27470Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average rheumatology physician in 2024
24 Medicare Part D claims, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
Other rheumatology physician records in California
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- Thomas Adamson, M.D.San Diego, CA1639187057
- Sana Afroz, MDMoreno Valley, CA1356724074
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Common questions
What is E Michael Thelen, MD's NPI number?
E Michael Thelen, MD's National Provider Identifier (NPI) is 1205811098, issued on Dec 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is E Michael Thelen, MD located?
The NPPES record lists a practice address at 4944 Sunrise Blvd, Fair Oaks, CA, 95628. Phone: (916) 966-5171. Providers update this record themselves, so call before visiting.
How can I verify E Michael Thelen, MD's license?
NPPES lists California license number G27470, 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.
How much does E Michael Thelen, MD prescribe under Medicare Part D?
In 2024, E Michael Thelen, MD had 24 Medicare Part D claims; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
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.