OMAR VIRAMONTES SR. MD
NPI 1801356126
Internal Medicine - Gastroenterology in Santa Maria, CA

Q: What is Omar Viramontes's NPI number?

The NPI number for Omar Viramontes is 1801356126. It was assigned to this individual provider in the NPPES registry on March 22, 2019.

Q: What is Omar Viramontes's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Omar Viramontes was last updated on August 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.

Active since March 22, 2019PECOS EnrolledAccepts Medicare Assignment

361 TOWN CENTER WEST SUITE 101, SANTA MARIA, CA 93458(805) 922-6581(805) 348-3217 Get Directions Write a Review

NPPES record last updated: August 14, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 14, 2025, Aug 24, 2022, Aug 4, 2022 and 1 more (4 updates tracked since 2019).

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About Omar Viramontes Sr. Md NPPES

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

OMAR VIRAMONTES SR. MD (NPI 1801356126) is an individual gastroenterology provider in Santa Maria, California, licensed in California (A177257) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS and is a graduate of University Of California, Geffen School Of Medicine (2019).

NPPES Registry Identity

NPI1801356126

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameOMAR VIRAMONTES SR.Credential: MD

Location Address361 TOWN CENTER WEST SUITE 101Santa Maria, CA 93458

Mailing Address361 Town Center Wost Suite 101Santa Maria, CA 93458 · (805) 922-6581 · Fax (805) 348-3217

Phone(805) 922-6581

Fax(805) 348-3217

Sole ProprietorNo

Medical School CMSUniversity Of California, Geffen School Of MedicineGraduated 2019

Enumeration DateMarch 22, 2019

Last NPPES UpdateAugust 14, 20254 updates tracked since enumeration

NPPES CertifiedAugust 24, 2022

✔ NPI 1801356126 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in CA · A177257

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.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

361 TOWN CENTER WEST SUITE 101, Santa Maria, CA 93458

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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

Omar Viramontes Sr. 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 ID4688073588

PECOS Enrollment IDI20240205003448

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

Medicare enrollment records show Omar Viramontes reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Santa Maria Gastroenterology Medical Group Inc.

0.9 mi

Gastroenterology

1311 S MILLER ST, 100
Santa Maria, CA 93454

Reassigned Medicare billing, California enrollment
29 clinicians in this Medicare group

NPI 1386971687 (805) 922-6991

Permanente Medical Group Inc

186 mi

Internal Medicine

710 LAWRENCE EXPRESSWAY
Santa Clara, CA 95051

Reassigned Medicare billing, California enrollment
20,078 clinicians in this Medicare group

NPI 1073606299 (408) 851-1000

Regents Of The University Of California

245 mi

Multi-Specialty

9390 BIG HORN BLVD
Elk Grove, CA 95758

Reassigned Medicare billing, California enrollment
918 clinicians in this Medicare group

NPI 1174966071 (916) 683-3950

Regents Of The Univ Of Ca

254 mi

Clinical Child & Adolescent

2825 50TH ST
Sacramento, CA 95817

Reassigned Medicare billing, California enrollment
2,570 clinicians in this Medicare group

NPI 1447423959 (916) 703-0315

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

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.

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93458 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

$139.99 typical visit price

range $62.01 – $184.40

Typical copayment $34.99 (range $15.50 – $46.10)

Most-billed visit code 99204

Established Patient

$108.26 typical visit price

range $20.60 – $151.20

Typical copayment $27.06 (range $5.15 – $37.80)

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 7

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

ROBERT EVANS MD

Internal Medicine (Gastroenterology)