Thoo H Tan, DO

Primary specialty

Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X

License

02918 Issued in IA

Practice address

1515 S Phillips St
Algona, IA 50511-3649

Phone

(515) 295-2451

NPI assigned

Jul 6, 2006

Last updated

Jun 1, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in IA

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

Obstetrics/GynecologyAlso: Emergency Medicine

Education

Other, 1990

Medicare assignment

May accept Medicare assignment

Group practices

North Iowa Mercy ClinicsGroup PAC ID 7810809076, 304 clinicians

Kossuth Regional Health CenterGroup PAC ID 3375454259, shared by 7 NPIs, 21 clinicians

Mercy Medical Center New HamptonGroup PAC ID 9032006325, shared by 3 NPIs, 18 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Mercyone North Iowa Medical Center Hospital, Mason City, IA, CCN 160064
• Hancock County Health System Hospital, Britt, IA, CCN 161307
• Hansen Family Hospital Hospital, Iowa Falls, IA, CCN 161380

Merit-based Incentive Payment System (MIPS)

Final score

93.78 of 100Reported as apm

Quality

80.38

Promoting interoperability

100

Improvement activities

40

Merit-based Incentive Payment System (MIPS)

Final score

81.55 of 100Reported as group

Quality

73.89

Promoting interoperability

93

Improvement activities

40

Cost

70.44

Merit-based Incentive Payment System (MIPS)

Final score

93.78 of 100Reported as apm

Quality

80.38

Promoting interoperability

100

Improvement activities

40

Merit-based Incentive Payment System (MIPS)

Final score

93.78 of 100Reported as apm

Quality

80.38

Promoting interoperability

100

Improvement activities

40

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir-myrecord.cerner.com/r4/8461b39c-bf4d-446e-92d9-25827935f03f/
• Direct secure messaging: ttan276796@uihcdirect.org
• Direct secure messaging: ttan3959420@direct.trinity-health.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.

• North Iowa Mercy Clinics

  dba MercyOne North Iowa Anesthesia Professional Services

  • Anesthesiology Physician
  • Mason City, IA
  • NPI 1780278242
  Medicare reassignment Care Compare group NPD
• Ellsworth Municipal Hospital

  dba Hansen Family Hospital

  • Critical Access Hospital
  • Iowa Falls, IA
  • NPI 1831296052
  Medicare reassignment NPD
• Hancock County Health System

  • Critical Access Hospital
  • Britt, IA
  • NPI 1689721318
  Medicare reassignment NPD
• Kossuth Regional Health Center

  • Family Medicine Physician
  • Algona, IA
  • NPI 1184636557
  Medicare reassignment NPD
• Kossuth Regional Health Center

  • Critical Access Hospital
  • Algona, IA
  • NPI 1841361276
  Medicare reassignment NPD
• Mason City Clinic PC

  • Otolaryngology Physician
  • Mason City, IA
  • NPI 1043254055
  Medicare reassignment NPD
• Mercy Medical Center New Hampton

  dba MercyOne New Hampton Emergency

  • Emergency Medicine Physician
  • New Hampton, IA
  • NPI 1679641419
  Medicare reassignment NPD
• Mercy Medical Center New Hampton

  dba MercyOne New Hampton Medical Center (Hosp)

  • Critical Access Hospital
  • New Hampton, IA
  • NPI 1770651515
  Medicare reassignment NPD
• Ellsworth Municipal Hospital

  dba Iowa Falls Clinic

  • Family Medicine Physician
  • Iowa Falls, IA
  • NPI 1043229735
  NPD
• Kossuth Regional Health Center

  • Critical Access Hospital
  • Algona, IA
  • NPI 1679644330
  NPD
• Mercy Medical Center - New Hampton

  dba Mercy Family Clinic - New Hampton

  • Family Medicine Physician
  • New Hampton, IA
  • NPI 1568474369
  NPD
• North Iowa Mercy Clinics

  dba MercyOne North Iowa Obstetrics & Gynecology

  • Obstetrics & Gynecology Physician
  • Mason City, IA
  • NPI 1306857347
  NPD

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

• Ellsworth Municipal Hospital

  dba Hansen Family Hospital

  • Critical Access Hospital
  • Iowa Falls, IA
  • NPI 1831296052
  Care Compare affiliation
• Hancock County Health System

  • Critical Access Hospital
  • Britt, IA
  • NPI 1912938606
  Care Compare affiliation
• Mercy Health Services-Iowa Corp

  dba Mercy Medical Center-North Iowa

  • Rural Acute Care Hospital
  • Mason City, IA
  • NPI 1467537886
  Care Compare affiliation

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

{
    "created_epoch": "1152144000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1780272000000",
    "number": "1104857127",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1010 4TH ST SW STE 220",
            "city": "MASON CITY",
            "state": "IA",
            "postal_code": "504012856",
            "telephone_number": "641-428-5100",
            "fax_number": "641-428-5115"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1515 S PHILLIPS ST",
            "city": "ALGONA",
            "state": "IA",
            "postal_code": "505113649",
            "telephone_number": "515-295-2451"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1010 4th St SW",
            "address_2": "SUITE 220",
            "address_purpose": "LOCATION",
            "city": "Mason City",
            "state": "IA",
            "postal_code": "504012857",
            "country_code": "US",
            "telephone_number": "641-428-5100",
            "fax_number": "641-428-5115",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "TAN",
        "first_name": "THOO",
        "middle_name": "H",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-07-06",
        "last_updated": "2026-06-01",
        "certification_date": "2026-06-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "IA",
            "license": "02918",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "ttan3959420@direct.trinity-health.org",
            "affiliation": "N",
            "endpointDescription": "MercyOne North Iowa Direct Email",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "1010 4th St SW",
            "address_2": "SUITE 220",
            "city": "Mason City",
            "state": "IA",
            "country_code": "US",
            "postal_code": "504012857",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• William Edward Strohman, D.D.S.
• Debra J. Studer, RD,LD,CDE
• Susan Jean Marvin
• Taffe Health Solutions
• Taffe Wellness Center PC
• The Evangelical Lutheran Good Samaritan Society (Good Samaritan Society - Algona)
• Abigail Marie Thomas, DDS
• Tony N Trainer, OD
• Jennifer Tram, PT, DPT
• Rachel A Venteicher, DO

• Obstetrics & Gynecology Physician in Algona, IA
• Providers in Algona, IA by specialty
• Obstetrics & Gynecology Physician in Iowa

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 1, 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.