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DR. TENGIS RIZNIS MD
NPI 1821155326
Family Medicine in Irvine, CA

Active since January 03, 2007PECOS EnrolledAccepts Medicare Assignment
11 TECHNOLOGY DR, IRVINE, CA 92618(949) 923-3200(949) 923-3550 Get Directions Write a Review

NPPES record last updated: November 25, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Nov 25, 2025, Aug 15, 2025 (2 updates tracked since 2025).

About Dr. Tengis Riznis Md NPPES

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

DR. TENGIS RIZNIS MD (NPI 1821155326) is an individual family medicine provider in Irvine, California, licensed in California (A86212) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS and is a graduate of Other (1998).

NPPES Registry Identity

NPI1821155326
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. TENGIS RIZNISCredential: MD
Location Address11 TECHNOLOGY DRIrvine, CA 92618-2302
Mailing AddressPo Box 35380Las Vegas, NV 89133-5380
Phone(949) 923-3200
Fax(949) 923-3550
Sole ProprietorNo
Medical School CMSOtherGraduated 1998
Enumeration DateJanuary 3, 2007
Last NPPES UpdateNovember 25, 20252 updates tracked since enumeration
NPPES CertifiedNovember 25, 2025
✔ NPI 1821155326 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 · A86212
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.
11 TECHNOLOGY DR, Irvine, CA 92618
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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. Tengis Riznis 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 ID2163499062
PECOS Enrollment IDI20040910001029
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 Tengis Riznis reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Healthcare Partners Affiliates Medical Group
7.9 mi
Addiction Medicine
14591 NEWPORT AVE
Tustin, CA 92780
  • Reassigned Medicare billing, California enrollment
  • 2,052 clinicians in this Medicare group
NPI 1891981502 (714) 442-4864
Centers For Family Medicine Gp
22 mi
Family Medicine
3460 KATELLA AVE
Los Alamitos, CA 90720
  • Reassigned Medicare billing, California enrollment
  • 228 clinicians in this Medicare group
NPI 1467598243 (562) 594-6599

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92618 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.

DR. MARIA TERESA CORPIN AGNER MD
Internal Medicine
11 TECHNOLOGY DR
IRVINE, CA 92618
Orange County (855) 206-6764
DR. SHAHNOOS MAHDAVI M.D.
Internal Medicine
11 TECHNOLOGY DR
IRVINE, CA 92618
Orange County (855) 206-6764
DR. JUSTIN D HARRIS M.D.
Internal Medicine
11 TECHNOLOGY DR
IRVINE, CA 92618
Orange County (949) 923-3200
DR. SUBRATO GHOSH MD
Internal Medicine
11 TECHNOLOGY DR
IRVINE, CA 92618
Orange County (855) 206-6764
DR. PARAG SHARMA M.D.
Internal Medicine
11 TECHNOLOGY DR
IRVINE, CA 92618
Orange County (855) 206-6764
DR. HAI XUAN LE M.D.
Internal Medicine
11 TECHNOLOGY DR
IRVINE, CA 92618
Orange County (949) 923-3200
DR. MOLOOD HADI DO
Internal Medicine
11 TECHNOLOGY DR
IRVINE, CA 92618
Orange County (949) 923-3200
DR. ALI AHOUI MD
Hospitalist
11 TECHNOLOGY DR
IRVINE, CA 92618
Orange County (855) 206-6764

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 Tengis Riznis's NPI number?

The NPI number for Tengis Riznis is 1821155326. It was assigned to this individual provider in the NPPES registry on January 3, 2007.

Where is Tengis Riznis located?

Tengis Riznis practices at 11 Technology Dr, Irvine, CA 92618. The listed phone number is (949) 923-3200.

What is Tengis Riznis's specialty?

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

Is Tengis Riznis enrolled in Medicare?

Yes. Tengis Riznis 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 Tengis Riznis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tengis Riznis reassigns Medicare benefits to 2 organizations: Healthcare Partners Affiliates Medical Group (Tustin, CA) and Centers For Family Medicine Gp (Los Alamitos, 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 Tengis Riznis'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 Tengis Riznis was last updated on November 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.