SEAN MICKELSEN PA-C
NPI 1538839246
Physician Assistant in Los Alamitos, CA

Active since September 14, 2021PECOS EnrolledAccepts Medicare Assignment
3851 KATELLA AVE STE 255, LOS ALAMITOS, CA 90720(562) 732-4578 Get Directions Write a Review

NPPES record last updated: December 20, 2022. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Dec 20, 2022, Oct 21, 2021, Sep 14, 2021 (3 updates tracked since 2021).

About Sean Mickelsen Pa-c NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SEAN MICKELSEN PA-C (NPI 1538839246) is an individual physician assistant in Los Alamitos, California, licensed in California (60053) and active in the NPI registry since September 2021. He is enrolled in Medicare PECOS, is affiliated with The Queens Medical Center, and is a graduate of Jefferson Medical College Of Thomas Jefferson University (2021).

NPPES Registry Identity

NPI1538839246
Entity TypeIndividualMale
Primary Taxonomy363A00000X
Provider Legal NameSEAN MICKELSENCredential: PA-C
Location Address3851 KATELLA AVE STE 255Los Alamitos, CA 90720-3353
Mailing Address3851 Katella Ave Ste 255Los Alamitos, CA 90720-3353 · (562) 732-4578
Sole ProprietorNo
Medical School CMSJefferson Medical College Of Thomas Jefferson UniversityGraduated 2021
Enumeration DateSeptember 14, 2021
Last NPPES UpdateDecember 20, 20223 updates tracked since enumeration
NPPES CertifiedNovember 7, 2021
NPI 1538839246 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License Licensed in CA · 60053
Definition

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

3851 KATELLA AVE STE 255, Los Alamitos, CA 90720

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Sean Mickelsen Pa-c is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1759751134
PECOS Enrollment IDI20250107002209
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
136 services94 patients
Complete ultrasound study of arm and leg arteries 93923
This procedure involves using sound waves to produce images of your arm and leg arteries. It helps identify blockages or abnormalities that could lead to conditions like stroke or peripheral artery disease. It's non-invasive and painless.
46 services46 patients
Testing of autonomic (sympathetic) nervous system function 95923
Testing of autonomic nervous system function assesses how well your body's automatic processes, like heart rate and blood pressure, are working. It involves various non-invasive tests like heart rate variability and sweat production tests.
43 services43 patients
Insertion of cage or mesh device to spine bone and disc space during spine fusion 22853
Spine fusion is a procedure to join two or more vertebrae. During this process, a cage or mesh device is inserted into the spine bone and disc space. This helps to stabilize the spine, reduce pain, and improve functionality. The device acts as a bridge for new bone to grow on.
15 services13 patients
Placement of stabilizing device to front, 2-3 spine bone segments 22845
This procedure involves positioning a stabilizing device on the front of 2-3 segments of your spine. It's designed to provide support and stability to your spine, potentially alleviating discomfort and improving mobility.
14 services13 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

The Queens Medical Center

Acute Care Hospitals · Honolulu, HI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number120001
Location1301 Punchbowl StHonolulu, HI 96813 · Honolulu County
Emergency services Birthing friendly

North Hawaii Community Hospital, Inc

Acute Care Hospitals · Kamuela, HI
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number120028
Location67 1125 Mamalahoa HighwayKamuela, HI 96743 · Hawaii County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90720 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Podiatrist
3851 KATELLA AVE STE 255
LOS ALAMITOS, CA 90720

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Sean Mickelsen's NPI number?

The NPI number for Sean Mickelsen is 1538839246. It was assigned to this individual provider in the NPPES registry on September 14, 2021.

Where is Sean Mickelsen located?

Sean Mickelsen practices at 3851 Katella Ave Ste 255, Los Alamitos, CA 90720. The listed phone number is (562) 732-4578.

What is Sean Mickelsen's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Sean Mickelsen enrolled in Medicare?

Yes. Sean Mickelsen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Sean Mickelsen accept?

Health plans from HMSA list Sean Mickelsen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Sean Mickelsen affiliated with any hospitals?

According to CMS data, Sean Mickelsen is affiliated with The Queens Medical Center and North Hawaii Community Hospital, Inc.

When was this NPI record last updated?

The NPPES record for Sean Mickelsen was last updated on December 20, 2022. NPI Profile syncs with the weekly NPPES data releases published by CMS.