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DR. MARIO LAURO PEREZ D.O.
NPI 1376747204
Internal Medicine in Fontana, CA

Active since June 13, 2007PECOS EnrolledAccepts Medicare Assignment
9958 SIERRA AVE., FONTANA, CA 92335(909) 427-3077 Get Directions Write a Review

NPPES record last updated: October 13, 2021. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Mario Lauro Perez D.o. NPPES

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

DR. MARIO LAURO PEREZ D.O. (NPI 1376747204) is an individual internal medicine provider in Fontana, California, licensed in California (20A8963) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS and is a graduate of Other (2003).

NPPES Registry Identity

NPI1376747204
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. MARIO LAURO PEREZCredential: D.O.
Location Address9958 SIERRA AVE.Fontana, CA 92335
Mailing Address33858 Golden Crown WayYucaipa, CA 92399-6964 · (909) 797-7017
Phone(909) 427-3077
Sole ProprietorYes
Medical School CMSOtherGraduated 2003
Enumeration DateJune 13, 2007
Last NPPES UpdateOctober 13, 2021
NPPES CertifiedOctober 13, 2021
✔ NPI 1376747204 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · 20A8963
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedPediatricsTaxonomy 208000000X · License 20A8963 (CA)
9958 SIERRA AVE., Fontana, CA 92335
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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

Dr. Mario Lauro Perez D.o. 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 ID9931396413
PECOS Enrollment IDI20101209000584
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92335 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
$136.04 typical visit price
range $59.60 – $179.42
Typical copayment $34.01 (range $14.90 – $44.85)
Most-billed visit code 99204
Established Patient
$104.64 typical visit price
range $19.37 – $146.42
Typical copayment $26.16 (range $4.84 – $36.60)
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.

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 Mario Perez's NPI number?

The NPI number for Mario Perez is 1376747204. It was assigned to this individual provider in the NPPES registry on June 13, 2007.

Where is Mario Perez located?

Mario Perez practices at 9958 Sierra Ave., Fontana, CA 92335. The listed phone number is (909) 427-3077.

What is Mario Perez's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Mario Perez enrolled in Medicare?

Yes. Mario Perez 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 Mario Perez was last updated on October 13, 2021. 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.