Omar Viramontes Sr., MD

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

A177257 Issued in CA

Practice address

361 Town Center West Suite 101
Santa Maria, CA 93458

Phone

(805) 922-6581

Fax

(805) 348-3217

NPI assigned

Mar 22, 2019

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Internal MedicineAlso: Gastroenterology

Education

University of California, Geffen School of Medicine, 2019

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Santa Maria Gastroenterology Medical Group Inc.Group PAC ID 6709070964, 23 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Marian Regional Medical Center Hospital, Santa Maria, CA, CCN 050107
• French Hospital Medical Center Hospital, San Luis Obispo, CA, CCN 050232

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Santa Maria Gastroenterology Medical Group Inc.

  • Gastroenterology Physician
  • Santa Maria, CA
  • NPI 1386971687
  Medicare reassignment Care Compare group
• Permanente Medical Group Inc

  • Internal Medicine Physician
  • Santa Clara, CA
  • NPI 1073606299
  Medicare reassignment NPD
• Regents of the Univ of Ca

  • Maternal & Fetal Medicine Physician
  • Sacramento, CA
  • NPI 1013906973
  Medicare reassignment NPD
• Regents of the University of California

  dba UC Davis Medical Group

  • Multi-Specialty Clinic/Center
  • Sacramento, CA
  • NPI 1952998973
  Medicare reassignment NPD
• Permanente Medical Group, Inc

  • Clinical Medical Laboratory
  • San Jose, CA
  • NPI 1497971584
  NPD
• Regents of the Univ of Ca

  • Internal Medicine Physician
  • Sacramento, CA
  • NPI 1255324323
  NPD
• Regents of the Univ of Ca

  • Diagnostic Radiology Physician
  • Sacramento, CA
  • NPI 1477546406
  NPD
• Regents of the University of California

  • Multi-Specialty Clinic/Center
  • Elk Grove, CA
  • NPI 1083694616
  NPD
• Dignity Health

  • General Acute Care Hospital
  • Santa Maria, CA
  • NPI 1760510937
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Dignity Community Care

  dba French Hospital Medical Center

  • General Acute Care Hospital
  • San Luis Obispo, CA
  • NPI 1881760452
  Care Compare affiliation
• Dignity Health

  • General Acute Care Hospital
  • Santa Maria, CA
  • NPI 1760510937
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1553212800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1755129600000",
    "number": "1801356126",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "361 TOWN CENTER WOST SUITE 101",
            "city": "SANTA MARIA",
            "state": "CA",
            "postal_code": "93458",
            "telephone_number": "805-922-6581",
            "fax_number": "805-348-3217"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "361 TOWN CENTER WEST SUITE 101",
            "city": "SANTA MARIA",
            "state": "CA",
            "postal_code": "93458",
            "telephone_number": "805-922-6581",
            "fax_number": "805-348-3217"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "VIRAMONTES",
        "first_name": "OMAR",
        "name_suffix": "Sr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-03-22",
        "last_updated": "2025-08-14",
        "certification_date": "2022-08-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "CA",
            "license": "A177257",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jessica Natalie Villanueva, REGISTERED NURSE
• Anne Marie Villarin
• Kathy Villatoro
• Itzia Alexandra Villegas
• Sydney Nicole Vine
• Garret Visser, PHARMD.
• Patrick Alexander Voegele, M.D.
• Ole Von Frausing-Borch, LMFT
• Cheryl Vonderahe
• Alexander Vong

• Gastroenterology Physician in Santa Maria, CA
• Providers in Santa Maria, CA by specialty
• Gastroenterology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 14, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.