Michael Horst Feddersen, D.O.
Psychiatry Physician · American Canyon, CA
Michael Horst Feddersen, D.O. is a psychiatry physician with a practice address in American Canyon, California, and NPI 1871710160, issued on Apr 19, 2007. Check the license (California 20A9585, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michael Horst Feddersen
- Credential
- D.O.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License numbers
- 20A9585 CA
25MB07893600 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 3433 Broadway St, American Canyon, CA 94503
- Phone
- (707) 561-9005
- Enumerated
- Apr 19, 2007
- Record last updated
- Feb 22, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20091123000699); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 3433 Broadway St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joseph Gaudiano, CMTMassage Therapist1992660609
- Derek McClure, BOCPOProsthetist1477960466
Verify Michael Horst Feddersen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A9585Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 91 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $18.66
1 payment: food and beverage; the largest payer was Abiomed. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Alameda Health SystemCastro Valley, CA
- St. Helena HospitalSaint Helena, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
3 psychiatry physician records list a practice address in American Canyon
They are 3 of the 178 NPPES records with a practice address in American Canyon, and 8,673 psychiatry physician records in California.
All 3 in American Canyon → All 8,673 in California → Every provider in American Canyon →
Other psychiatry physician records in California
- Nancy Aaen, MDNapa, CA1609816669
- Criselda Abad-Santos, M.D.Woodland Hills, CA1760461826
- Mekabiz Abaian, MDSan Bernardino, CA1891090163
- Brenda Abarca, MDTorrance, CA1407485527
- Pilar Abascal, M.D.Los Angeles, CA1730528191
- Michele Abbasi, M.D.Westlake Village, CA1093940330
- Zohaib AbbasiMartinez, CA1013392224
- Sandy Abdelkedous, MDFresno, CA1306093109
- Nancy Abdelmalak, M.D.Elk Grove, CA1912137498
- Ezzat Abdelmalek, M.DDana Point, CA1992828826
Common questions
What is Michael Horst Feddersen, D.O.'s NPI number?
Michael Horst Feddersen, D.O.'s National Provider Identifier (NPI) is 1871710160, issued on Apr 19, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Michael Horst Feddersen, D.O. located?
The NPPES record lists a practice address at 3433 Broadway St, American Canyon, CA, 94503. Phone: (707) 561-9005. Providers update this record themselves, so call before visiting.
How can I verify Michael Horst Feddersen, D.O.'s license?
NPPES lists California license number 20A9585, 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.
What is Michael Horst Feddersen, D.O.'s MIPS final score?
The 2023 MIPS final score is 91 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.