Kay Thi Oo, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

287430 Issued in MA

Practice address

759 Chestnut St
Springfield, MA 01107-1619

Phone

(413) 794-6297

Fax

(413) 794-1767

NPI assigned

Jul 9, 2018

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 MA, CA2 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

Internal Medicine

Education

Other, 2012

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Southern California Permanente Medical GroupGroup PAC ID 6002729175, 11,250 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Kaiser Foundation Hospital, Riverside Hospital, Riverside, CA, CCN 050686

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.

• Southern California Permanente Medical Group

  • Health Maintenance Organization
  • Riverside, CA
  • NPI 1316979834
  Medicare reassignment Care Compare group NPD
• Southern California Permanente Medical Group

  • Health Maintenance Organization
  • Hemet, CA
  • NPI 1013433465
  NPD
• Southern California Permanente Medical Group

  • Health Maintenance Organization
  • Santa Clarita, CA
  • NPI 1316409410
  NPD
• Baystate Medical Center Inc

  • General Acute Care Hospital
  • Springfield, MA
  • NPI 1487655064
  NPD (past)

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

• Kaiser Foundation Hospitals

  • General Acute Care Hospital
  • Riverside, CA
  • NPI 1306991211
  Care Compare affiliation

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

{
    "created_epoch": "1531094400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1748304000000",
    "number": "1184110538",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "280 CHESTNUT ST",
            "address_2": "2ND FLOOR",
            "city": "SPRINGFIELD",
            "state": "MA",
            "postal_code": "011991001",
            "telephone_number": "413-794-5700"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "759 CHESTNUT ST",
            "city": "SPRINGFIELD",
            "state": "MA",
            "postal_code": "011071619",
            "telephone_number": "413-794-6297",
            "fax_number": "413-794-1767"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "OO",
        "first_name": "KAY THI",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-07-09",
        "last_updated": "2025-05-27",
        "certification_date": "2021-08-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "MA",
            "license": "287430",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MA",
            "license": "287430",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "SOAP",
            "endpointTypeDescription": "SOAP URL",
            "endpoint": "https://careepicwest.kp.org:14430/Interconnect-prodcalgateway/wcf/epic.community.hie/xcpdrespondinggatewaysync.svc/scalceq",
            "affiliation": "Y",
            "endpointDescription": "Carequality",
            "affiliationName": "Southern California Permanente Medical Group",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "C-CDA",
            "address_1": "10800 Magnolia Ave",
            "city": "Riverside",
            "state": "CA",
            "country_code": "US",
            "postal_code": "925053043",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Raven Adair Omuemu, APRN, PMHNP
• Bethany Ondrick, NP
• Brendanne Oneil
• Oluwaseyi O Oni, MD
• Jeremiah Onwuzurumba, MD
• Matthew T Opacic, MD
• Richard Marshall Opler, D.D.S.
• Anika Opp-Harris, PA-C
• Miriam Marla Oppenheimer
• Nora Sigrid Oppenheimer

• Internal Medicine Physician in Springfield, MA
• Providers in Springfield, MA by specialty
• Internal Medicine Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 27, 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.