Mark C. O'Brien, D.O., Inc.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

Legal business name

MARK C. O'BRIEN, D.O., INC.

Practice address

161 Thunder Dr Ste 210
Vista, CA 92083-6052

Phone

(760) 889-1763

NPI assigned

Oct 10, 2024

Organization subpart

No

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

Authorized official

Name

Dr. Mark Conway O'Brien, DONPI 1497744247

Title

President

Phone

(760) 889-1763

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Enrollment records 1

Practitioners 3

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

• Mark C O'Brien, D.O.

  • Internal Medicine Physician
  • Vista, CA
  • NPI 1497744247
  Medicare reassignment NPD Authorized official
• Rodalyn Ulep Brown, FNP

  • Nurse Practitioner
  • Carlsbad, CA
  • NPI 1184163206
  NPD (past)
• Angelito Dela Cruz, DNP

  • Family Nurse Practitioner
  • Oceanside, CA
  • NPI 1457806366
  NPD (past)

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

{
    "created_epoch": "1728518400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1728518400000",
    "number": "1346060860",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6786 VERMARINE CT",
            "city": "CARLSBAD",
            "state": "CA",
            "postal_code": "920091705",
            "telephone_number": "760-889-1763"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "161 THUNDER DR STE 210",
            "city": "VISTA",
            "state": "CA",
            "postal_code": "920836052",
            "telephone_number": "760-889-1763"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "MARK C. O'BRIEN, D.O., INC.",
        "organizational_subpart": "NO",
        "enumeration_date": "2024-10-10",
        "last_updated": "2024-10-10",
        "certification_date": "2024-10-10",
        "status": "A",
        "authorized_official_last_name": "O'BRIEN",
        "authorized_official_first_name": "MARK",
        "authorized_official_middle_name": "CONWAY",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "760-889-1763",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "DO"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Internal Medicine",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Natalie Mar
• Dominic Marania
• Loni Marcus
• Madhuri Marelli, P.A.
• Yvonne Darlene Marino, COUNSELOR
• Mark Elliott and Debra Elliott Chiropractic Inc (Performance Chiropractic)
• Rachelle Markham, IBCLC
• Mallory Nicole Markis, FNP-C
• William Akin Marks, MD
• Brandon G Markwell, DPT

• Internal Medicine Physician in Vista, CA
• Providers in Vista, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 10, 2024; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.