Joanna Duane Twombly, D.O.

Primary specialty

Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X

License

2018014390 Issued in MO

Practice address

1500 N Oakland Ave
Bolivar, MO 65613-3011

Phone

(417) 326-6000

NPI assigned

Apr 7, 2008

Last updated

Jan 15, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 7

Addresses

Other identifiers 2

Medicare fee-for-service enrollment

Enrolled in MO, WA, MN3 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 3

Specialty

Obstetrics/GynecologyAlso: Osteopathic Manipulative Medicine

Education

Other, 2008

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Citizens Memorial HealthcareGroup PAC ID 4183528169, shared by 14 NPIs, 144 clinicians

Mayo Clinic Health System-Southeast Minnesota RegionGroup PAC ID 4385556703, 550 clinicians

Lake Regional Health SystemGroup PAC ID 9133026776, shared by 16 NPIs, 132 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Mayo Clinic Health System - Albert Lea and Austin Hospital, Albert Lea, MN, CCN 240043
• Lake Regional Health System Hospital, Osage Beach, MO, CCN 260186

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: jtwombly2381556@ehrdirect.mayoclinicmsg.org

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

• Mayo Clinic Health System-Southeast Minnesota Region

  dba Mayo Clinic Health System-Albert Lea and Austin

  • Multi-Specialty Clinic/Center
  • Albert Lea, MN
  • NPI 1891701637
  Medicare reassignment Care Compare group NPD
• Citizens Memorial Healthcare

  • Surgery Physician
  • Bolivar, MO
  • NPI 1568566131

  Obstetrics & Gynecology

  Medicare reassignment NPD
• Lake Regional Health System

  • Emergency Medical Services (Emergency Medicine) Physician
  • Osage Beach, MO
  • NPI 1053581454
  Medicare reassignment NPD
• Mercy Clinic Springfield Communities

  • Family Medicine Physician
  • Springfield, MO
  • NPI 1245277631
  Medicare reassignment NPD
• Mercy Clinic Springfield Communities

  dba Mercy Clinic Family Medicine-Willow Springs

  • Rural Health Clinic/Center
  • Willow Springs, MO
  • NPI 1972771657
  Medicare reassignment NPD
• Yakima Valley Farm Workers Clinic

  dba Behavioral Health Services

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Yakima, WA
  • NPI 1295788602
  Medicare reassignment NPD
• Mercy Clinic Joplin LLC

  • Family Medicine Physician
  • Joplin, MO
  • NPI 1215264817
  Medicare reassignment
• Citizens Memorial Healthcare

  dba CMH Willard Medical Center

  • Rural Health Clinic/Center
  • Willard, MO
  • NPI 1568127397
  NPD
• Lake Regional Health System

  dba Lake Regional Orthopedics

  • Durable Medical Equipment & Medical Supplies
  • Lebanon, MO
  • NPI 1578125324
  NPD
• Mercy Clinic Springfield Communities

  • Family Medicine Physician
  • Hollister, MO
  • NPI 1053350454
  NPD
• Mayo Clinic Health System-Southeast Minnesota Region

  dba Mayo Clinic Health System-Red Wing

  • Multi-Specialty Clinic/Center
  • Red Wing, MN
  • NPI 1114453883
  NPD
• Mayo Clinic Health System-Southeast Minnesota Region

  dba Mayo Clinic Health System Pharmacy - Cannon Falls

  • Clinic Pharmacy
  • Cannon Falls, MN
  • NPI 1699597468
  NPD

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

• Lake Regional Health System

  • Clinic/Center
  • Osage Beach, MO
  • NPI 1295151959

  Hospital

  Care Compare affiliation
• Lake Regional Health System

  • Rural Acute Care Hospital
  • Osage Beach, MO
  • NPI 1386619450
  Care Compare affiliation
• Mayo Clinic Health System-Southeast Minnesota Region

  dba Mayo Clinic Health System-Albert Lea and Austin

  • General Acute Care Hospital
  • Albert Lea, MN
  • NPI 1346258100
  Care Compare affiliation

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

{
    "created_epoch": "1207526400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768435200000",
    "number": "1780857284",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6456 ABIGAIL LN",
            "city": "REPUBLIC",
            "state": "MO",
            "postal_code": "657389496",
            "telephone_number": "419-261-0159"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1500 N OAKLAND AVE",
            "city": "BOLIVAR",
            "state": "MO",
            "postal_code": "656133011",
            "telephone_number": "417-326-6000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TWOMBLY",
        "first_name": "JOANNA",
        "middle_name": "DUANE",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2008-04-07",
        "last_updated": "2026-01-15",
        "certification_date": "2026-01-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "MN",
            "license": "75069",
            "primary": false
        },
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "MO",
            "license": "2018014390",
            "primary": true
        },
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "ME",
            "license": "DO3556",
            "primary": false
        },
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "WA",
            "license": "OP61394894",
            "primary": false
        },
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "OH",
            "license": "34-009177",
            "primary": false
        },
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "ME",
            "license": "LT22014",
            "primary": false
        },
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "AR",
            "license": "06-1833974",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE PTAN",
            "identifier": "267325YJL4",
            "state": "AR"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "197028003",
            "state": "AR"
        }
    ],
    "endpoints": [],
    "other_names": []
}

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• Obstetrics & Gynecology Physician in Bolivar, MO
• Providers in Bolivar, MO by specialty
• Obstetrics & Gynecology Physician in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 15, 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.