Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MAHNAZ SHAMBAYATI PA-C
NPI 1639574395
Physician Assistant in Costa Mesa, CA

Q: What is Mahnaz Shambayati's NPI number?

The NPI number for Mahnaz Shambayati is 1639574395. It was assigned to this individual provider in the NPPES registry on October 23, 2014.

Q: What is Mahnaz Shambayati's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Mahnaz Shambayati was last updated on June 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 56 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since October 23, 2014PECOS EnrolledAccepts Medicare Assignment

1650 ADAMS AVE, COSTA MESA, CA 92626(949) 270-2100(949) 650-4458 Get Directions Write a Review

NPPES record last updated: June 22, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Apr 18, 2022, Apr 8, 2022 (2 updates tracked since 2022).

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About Mahnaz Shambayati Pa-c NPPES

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

MAHNAZ SHAMBAYATI PA-C (NPI 1639574395) is an individual physician assistant in Costa Mesa, California, licensed in California (PA67676) and active in the NPI registry since October 2014. She is enrolled in Medicare PECOS, is affiliated with Medical City Plano, and is a graduate of Texas Tech University Health Science Center School Of Medicine (2014).

NPPES Registry Identity

NPI1639574395

Entity TypeIndividualFemale

Primary Taxonomy363A00000X

Provider Legal NameMAHNAZ SHAMBAYATICredential: PA-C

Location Address1650 ADAMS AVECosta Mesa, CA 92626-4958

Mailing Address20151 Sw Birch St Ste 100Newport Beach, CA 92660-1794 · (949) 270-2100 · Fax (949) 650-4458

Phone(949) 270-2100

Fax(949) 650-4458

Sole ProprietorNo

Medical School CMSTexas Tech University Health Science Center School Of MedicineGraduated 2014

Enumeration DateOctober 23, 2014

Last NPPES UpdateJune 22, 20262 updates tracked since enumeration

NPPES CertifiedJune 22, 2026

✔ NPI 1639574395 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363A00000X

License✔ Licensed in CA · PA67676

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.

Also ListedPhysician Assistant · MedicalTaxonomy 363AM0700X · License PA67676 (CA)

1650 ADAMS AVE, Costa Mesa, CA 92626

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas.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

Mahnaz Shambayati 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 ID6204243611

PECOS Enrollment IDI20210401000302

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.

Hospital Affiliations CMS Care Compare

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

Medical City Plano

Acute Care Hospitals · Plano, TX

3/5 CMS rating

OwnershipProprietary

CMS Certification Number450651

Location3901 W 15th StPlano, TX 75075 · Collin County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92626 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 11

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

CLEAN TESTING SERVICES

Clinical Medical Laboratory