DR. THOMAS AZEIZAT MD
NPI 1558894907
Family Medicine in Tustin, CA

Active since April 04, 2017PECOS EnrolledAccepts Medicare Assignment
1451 IRVINE BLVD, TUSTIN, CA 92780(714) 838-8878 Get Directions Write a Review

NPPES record last updated: October 31, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 31, 2022, Aug 12, 2020, Jun 17, 2020 (3 updates tracked since 2020).

About Dr. Thomas Azeizat Md NPPES

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

DR. THOMAS AZEIZAT MD (NPI 1558894907) is an individual family medicine provider in Tustin, California, licensed in California (A159431) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS and is a graduate of Other (2017).

NPPES Registry Identity

NPI1558894907
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. THOMAS AZEIZATCredential: MD
Location Address1451 IRVINE BLVDTustin, CA 92780-3804
Mailing Address200 S Manchester Ave Ste 300Orange, CA 92868-3219 · (714) 456-2986
Sole ProprietorNo
Medical School CMSOtherGraduated 2017
Enumeration DateApril 4, 2017
Last NPPES UpdateOctober 31, 20223 updates tracked since enumeration
NPPES CertifiedOctober 31, 2022
✔ NPI 1558894907 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · A159431
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
1451 IRVINE BLVD, Tustin, CA 92780

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Thomas Azeizat Md 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 ID4183957145
PECOS Enrollment IDI20200630002293
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.

Medicare Billing Reassignments

2

Medicare enrollment records show Thomas Azeizat reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Family Medicine
101 THE CITY DR S
Orange, CA 92868
  • Reassigned Medicare billing, California enrollment
  • 114 clinicians in this Medicare group
Family Medicine
101 THE CITY DR S
Orange, CA 92868
  • Reassigned Medicare billing, California enrollment
  • 75 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 12

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 moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
239 services134 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
170 services111 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.
111 services91 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
41 services40 patients
Influenza vaccine split virus, preservative free 90662
The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.
39 services38 patients
Routine electrocardiogram (ecg) using at least 12 leads with tracing 93005
An Electrocardiogram (ECG) is a simple, painless test that records the heart's electrical activity. Using 12 leads attached to your skin, it generates a tracing of your heart rhythm. It helps detect any heart problems by showing the timing and strength of electrical signals passing through each part of your heart.
24 services23 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92780 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
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
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.

Family Medicine
1451 IRVINE BLVD
TUSTIN, CA 92780
Family Medicine
1451 IRVINE BLVD
TUSTIN, CA 92780
Nurse Practitioner
1451 IRVINE BLVD
TUSTIN, CA 92780
Pediatrics
1451 IRVINE BLVD
TUSTIN, CA 92780
Pediatrics
1451 IRVINE BLVD
TUSTIN, CA 92780
Dermatology
1451 IRVINE BLVD
TUSTIN, CA 92780
Clinic/Center (Medical Specialty)
1451 IRVINE BLVD
TUSTIN, CA 92780
Physician Assistant
1451 IRVINE BLVD
TUSTIN, CA 92780

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 Thomas Azeizat's NPI number?

The NPI number for Thomas Azeizat is 1558894907. It was assigned to this individual provider in the NPPES registry on April 4, 2017.

Where is Thomas Azeizat located?

Thomas Azeizat practices at 1451 Irvine Blvd, Tustin, CA 92780. The listed phone number is (714) 838-8878.

What is Thomas Azeizat's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Thomas Azeizat enrolled in Medicare?

Yes. Thomas Azeizat 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.

Which organizations bill Medicare for Thomas Azeizat's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Azeizat reassigns Medicare benefits to 2 organizations: Regents Of The University Of (Orange, CA) and Regents Of The University Of California (Orange, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Thomas Azeizat's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Thomas Azeizat was last updated on October 31, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.