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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

STEPHANIE MIGNON SISNEROS PA-C
NPI 1356397970
Physician Assistant in Mission Viejo, CA

Active since May 25, 2006PECOS Enrolled
26302 LA PAZ RD, SUITE #203, MISSION VIEJO, CA 92691(949) 768-3643 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Stephanie Mignon Sisneros Pa-c NPPES

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

STEPHANIE MIGNON SISNEROS PA-C (NPI 1356397970) is an individual physician assistant in Mission Viejo, California, licensed in California (PA17178) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS and is a graduate of Other (2003).

NPPES Registry Identity

NPI1356397970
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameSTEPHANIE MIGNON SISNEROSCredential: PA-C
Location Address26302 LA PAZ RD, SUITE #203Mission Viejo, CA 92691-5313
Mailing Address19 Briarwood LnAliso Viejo, CA 92656-2960 · (949) 362-2762
Phone(949) 768-3643
Sole ProprietorNo
Medical School CMSOtherGraduated 2003
Enumeration DateMay 25, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1356397970 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 · PA17178
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.
26302 LA PAZ RD, Mission Viejo, CA 92691
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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

Stephanie Mignon Sisneros 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 ID2769855592
PECOS Enrollment IDI20230227001070
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 4

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.

Acupuncture with electrical stimulation, each additional 15 minutes 97814
Acupuncture with electrical stimulation involves inserting thin needles into specific points on your body. A mild electrical current is then passed through these needles for a set time, often 15 minutes. This can enhance the effects of traditional acupuncture, helping to relieve pain and promote healing.
210 services21 patients
Acupuncture with electrical stimulation, initial 15 minutes 97813
Acupuncture with electrical stimulation is a therapy where thin needles are inserted into specific points on your body. A mild electrical current is then passed through the needles to stimulate these points, helping to alleviate pain and promote healing. This initial session lasts 15 minutes.
107 services21 patients
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.
35 services30 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
16 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92691 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 20

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

DR. JOHN DENNIS DE LORME D.D.S.
Dentist (Pediatric Dentistry)
26302 LA PAZ RD, SUITE 114
MISSION VIEJO, CA 92691
Orange County (949) 581-5800
DR. NINA BHATT D.D.S.
Dentist (Orthodontics and Dentofacial Orthopedics)
26302 LA PAZ RD, SUITE 212
MISSION VIEJO, CA 92691
Orange County (949) 470-9676
DR. ANDREW CHOI DDS
Dentist (General Practice)
26302 LA PAZ RD, SUITE 209
MISSION VIEJO, CA 92691
Orange County (949) 951-3044
JAMES D. CLARK, DDS, APC
Dentist (Orthodontics and Dentofacial Orthopedics)
26302 LA PAZ RD, 202
MISSION VIEJO, CA 92691
Orange County (949) 830-4101
MARY ANN PITALE AU.D.
Audiologist-Hearing Aid Fitter
26302 LA PAZ RD, SUITE 107
MISSION VIEJO, CA 92691
Orange County (949) 855-7898
DR. DAVID WILLIAM NICHOLLS D.D.S.
Dentist (Oral and Maxillofacial Surgery)
26302 LA PAZ RD, SUITE 102
MISSION VIEJO, CA 92691
Orange County (949) 586-7000
WILLIAM R BARTOK MD INC
Specialist
26302 LA PAZ RD, SUITE 214
MISSION VIEJO, CA 92691
Orange County (949) 830-9530
MRS. LAURA S. RYDELL M.S.
Marriage & Family Therapist
26302 LA PAZ RD, SUITE 201
MISSION VIEJO, CA 92691
Orange County (949) 586-9848

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 Stephanie Sisneros's NPI number?

The NPI number for Stephanie Sisneros is 1356397970. It was assigned to this individual provider in the NPPES registry on May 25, 2006.

Where is Stephanie Sisneros located?

Stephanie Sisneros practices at 26302 La Paz Rd Suite #203, Mission Viejo, CA 92691. The listed phone number is (949) 768-3643.

What is Stephanie Sisneros's specialty?

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

Is Stephanie Sisneros enrolled in Medicare?

Yes. Stephanie Sisneros 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.

When was this NPI record last updated?

The NPPES record for Stephanie Sisneros was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.