DR. LEO TREYZON M.D.
NPI 1740304203
Internal Medicine - Gastroenterology in Beverly Hills, CA

Q: What is Leo Treyzon's NPI number?

The NPI number for Leo Treyzon is 1740304203. It was assigned to this individual provider in the NPPES registry on March 19, 2007.

Q: What is Leo Treyzon's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: Is Leo Treyzon enrolled in Medicare?

No. Leo Treyzon has opted out of Medicare through November 2, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

Q: When was this NPI record last updated?

The NPPES record for Leo Treyzon was last updated on January 12, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.

Active since March 19, 2007Opted out of Medicare · through Nov 2, 2027

9454 WILSHIRE BLVD STE 510, BEVERLY HILLS, CA 90212(310) 688-4141(424) 488-7156 Get Directions Write a Review

NPPES record last updated: January 12, 2024. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. Leo Treyzon M.d. NPPES

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

DR. LEO TREYZON M.D. (NPI 1740304203) is an individual gastroenterology provider in Beverly Hills, California, licensed in California (A81388) and active in the NPI registry since March 2007. He has opted out of Medicare through November 2, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1740304203

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDR. LEO TREYZONCredential: M.D.

Location Address9454 WILSHIRE BLVD STE 510Beverly Hills, CA 90212-2904

Mailing Address9454 Wilshire Blvd Ste 510Beverly Hills, CA 90212-2904 · (310) 688-4141 · Fax (424) 488-7156

Phone(310) 688-4141

Fax(424) 488-7156

Sole ProprietorNo

Enumeration DateMarch 19, 2007

Last NPPES UpdateJanuary 12, 2024

NPPES CertifiedJanuary 12, 2024

✔ NPI 1740304203 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in CA · A81388

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

9454 WILSHIRE BLVD STE 510, Beverly Hills, CA 90212

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Leo Treyzon M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from November 2, 2017 through November 2, 2027.

Opt-Out Effective DateNovember 2, 2017

Opt-Out In Effect ThroughNovember 2, 2027Opt-out affidavits renew automatically every two years unless cancelled

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Compliance 05D1100558

Leo Treyzon, MD Inc · Beverly Hills, CA

Expired · Jul 31, 2026

CLIA Number05D1100558

Laboratory TypePhysician Office

Certificate Effective DateMarch 18, 2024

Certificate Expiration DateJuly 31, 2026

Laboratory DirectorDr. Todd A. Glauser

Laboratory Phone(310) 688-4141

Laboratory LocationLeo Treyzon, MD Inc9454 Wilshire Blvd, Ste 510A, Beverly Hills, CA 90212

CLIA data matches this NPI record on: Address Name Phone

This certificate is issued to a laboratory after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90212 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

$142.39 typical visit price

range $62.96 – $187.60

Typical copayment $35.59 (range $15.74 – $46.90)

Most-billed visit code 99204

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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tacrolimus, immediate release, oral, 1 mg J7507

Treatment-Treatment - Miscellaneous · category RX029N

1 supplier11 claims330 services$0.33 avg. paid by Medicare

Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511

Treatment-Chemotherapy · category RH012N

1 supplier11 claims11 services$18.98 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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Other Providers at the Same Location NPPES 5

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

DR. JIN-HWA SIMON M.D.

Internal Medicine