Marisa Leiko Oishi, MD, MPH

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

A134104 Issued in CA

Practice address

US 191 and Hospital Road
Chinle, AZ 86503

Phone

(928) 674-7090

NPI assigned

Jun 9, 2008

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in CA, TX2 enrollments

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 2

Specialty

Emergency Medicine

Education

Oregon Health Sciences University School of Medicine, 2007

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

DHHS PHS Naihs Chinle Comprehensive Health Care FacilityGroup PAC ID 9436062585, 160 clinicians

Practice addresses (Care Compare)

Merit-based Incentive Payment System (MIPS)

Final score

80.86 of 100Reported as group

Quality

61.32

Improvement activities

40

Cost

90.46

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• DHHS PHS Naihs Chinle Comprehensive Health Care Facility

  dba Chinle Comprehensive Health Care Facility

  • General Acute Care Hospital
  • Chinle, AZ
  • NPI 1508800129

  TX

  Medicare reassignment Care Compare group NPD
• Permanente Medical Group Inc

  • Internal Medicine Physician
  • Santa Clara, CA
  • NPI 1073606299

  Emergency Medicine

  Medicare reassignment NPD
• DHHS PHS Naihs Chinle Comprehensive Health Care Facility

  dba Pinon Health Center

  • General Acute Care Hospital
  • Pinon, AZ
  • NPI 1396761565
  NPD
• Permanente Medical Group Inc

  • Internal Medicine Physician
  • Richmond, CA
  • NPI 1235226531

  Emergency Medicine

  NPD
• Permanente Medical Group, Inc

  • Clinical Medical Laboratory
  • San Jose, CA
  • NPI 1497971584
  NPD
• Berkeley Emergency Medical Group, Inc.

  • Emergency Medicine Physician
  • Oakland, CA
  • NPI 1508874454
  NPD (past)
• TBHC Emergency Medicine PC

  • Emergency Medicine Physician
  • Brooklyn, NY
  • NPI 1831378207
  NPD (past)

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

{
    "created_epoch": "1212969600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785974400000",
    "number": "1295994739",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "12030 DONNER PASS RD",
            "city": "TRUCKEE",
            "state": "CA",
            "postal_code": "961610449",
            "telephone_number": "503-358-5156"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "US 191 AND HOSPITAL ROAD",
            "city": "CHINLE",
            "state": "AZ",
            "postal_code": "86503",
            "telephone_number": "928-674-7090"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "OISHI",
        "first_name": "MARISA",
        "middle_name": "LEIKO",
        "name_prefix": "Dr.",
        "credential": "MD, MPH",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2008-06-09",
        "last_updated": "2026-08-06",
        "certification_date": "2026-08-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CA",
            "license": "A134104",
            "primary": true
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "WA",
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "SOAP",
            "endpointTypeDescription": "SOAP URL",
            "endpoint": "https://careepicwest.kp.org:14430/Interconnect-prodcalgateway/wcf/epic.community.hie/xcpdrespondinggatewaysync.svc/ncalceq",
            "affiliation": "N",
            "endpointDescription": "Carequality",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "C-CDA",
            "address_1": "4601 Dale Rd",
            "city": "Modesto",
            "state": "CA",
            "country_code": "US",
            "postal_code": "953569718",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Gretchen Kathleen Ngo, CNM
• Chau Thanh Minh Nguyen
• David Nkuidjeu
• Gavin Maurice O'Brien, PHARMD
• Kevin Christian O'Leary, PSY.D.
• Adeola Oke, PHARMD
• Frank R. Olivas, DDS
• Michelle Monica Ong, MD
• Xavier Alain Orcutt, MD
• Kevin Padrez, M.D.

• Emergency Medicine Physician in Chinle, AZ
• Providers in Chinle, AZ by specialty
• Emergency Medicine Physician in Arizona

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 6, 2026; 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.