Sean Mickelsen, PA-C
Physician Assistant · Los Alamitos, CA
Sean Mickelsen, PA-C is a physician assistant with a practice address in Los Alamitos, California, and NPI 1538839246, issued on Sep 14, 2021. Check the license (California 60053, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Sean Mickelsen
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 60053 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3851 Katella Ave Ste 255, Los Alamitos, CA 90720
- Phone
- (562) 732-4578
- Enumerated
- Sep 14, 2021
- Record last updated
- Dec 20, 2022
- Medicare enrollment
- Enrolled (PECOS I20250107002209); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 2021
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 3851 Katella Ave Ste 255
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rotem Korsnack, DPMPodiatrist1497076962
Verify Sean Mickelsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 60053Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $452.48
12 payments; by number, the most common kind was food and beverage; the largest payer was Globus Medical, Inc. The 64,719 providers of this specialty with any payment received $841.65 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 one group practice
- Queens University Medical GroupHonolulu, HI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sean Mickelsen among 14,451 physician assistant records in California
Sean Mickelsen, PA-C is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 67% of them.
- NPI issued2021 · 67% of these records are older, 27% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2021 · median 2018 among the 7,214 with a school on file
- Record last updated2022 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
29 physician assistant records list a practice address in Los Alamitos
They are 29 of the 1,035 NPPES records with a practice address in Los Alamitos, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Los Alamitos → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Katherine Beckwith, PA-CLos Alamitos, CA 907201710397930
- Nicholas Brecht, PA-CLos Alamitos, CA 907201205095205
- Leslie Davis, PALos Alamitos, CA 907201144395799
- Daniel Davis, PA-CLos Alamitos, CA 907201194173047
- Lauren Dolan, PA-CLos Alamitos, CA 907201700107091
- Anne Hall, PHYSICIAN ASSISTANTLos Alamitos, CA 907201699794081
- Yoonah LeeLos Alamitos, CA 907201538417415
- Heather Patz, PA-CLos Alamitos, CA 907201255573234
Common questions
What is Sean Mickelsen, PA-C's NPI number?
Sean Mickelsen, PA-C's National Provider Identifier (NPI) is 1538839246, issued on Sep 14, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Sean Mickelsen, PA-C located?
The NPPES record lists a practice address at 3851 Katella Ave Ste 255, Los Alamitos, CA, 90720. Phone: (562) 732-4578. Providers update this record themselves, so call before visiting.
How can I verify Sean Mickelsen, PA-C's license?
NPPES lists California license number 60053, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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.