Denisa Hagau, M.D.

Primary specialty

Cardiovascular Disease PhysicianTaxonomy code 207RC0000X

License

MD-43219 Issued in IA

Practice address

250 S Crescent Dr
Mason City, IA 50401-2926

Phone

(641) 494-5300

Fax

(641) 494-5321

NPI assigned

Jun 23, 2010

Last updated

Jun 16, 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 4

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in FL, IA2 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

Cardiovascular Disease (Cardiology)

Education

Other, 2006

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

Palo Alto County HospitalGroup PAC ID 4486563061, shared by 8 NPIs, 23 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
• Kossuth Regional Health Center Hospital, Algona, IA, CCN 161353
• Mitchell County Regional Health Hospital, Osage, IA, CCN 161323
• Palo Alto County Hospital Hospital, Emmetsburg, IA, CCN 161357

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

89.07 of 100Reported as group

Quality

70.29

Promoting interoperability

100

Improvement activities

40

Cost

73.71

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: dhagau3926109@direct.trinity-health.org
• FHIR API: https://epicfhir.msmc.com/proxysite-prd/api/FHIR/R4/

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
• Mount Sinai Medical Center Cardiology LLC

  • General Practice Physician
  • Miami Beach, FL
  • NPI 1134366727
  Medicare reassignment NPD
• Mason City Clinic PC

  • Otolaryngology Physician
  • Mason City, IA
  • NPI 1043254055
  Medicare reassignment
• North Iowa Mercy Clinics

  dba Mercy Family Clinic-Forest City

  • Family Medicine Physician
  • Forest City, IA
  • NPI 1811003015
  NPD
• Floyd County Memorial Hospital Commission

  • Critical Access Hospital
  • Charles City, IA
  • NPI 1265402390
  NPD (past)
• Mercy Health Services-Iowa Corp

  dba Mercy Medical Center-North Iowa

  • Rural Acute Care Hospital
  • Mason City, IA
  • NPI 1467537886
  NPD (past)
• North Iowa Mercy Clinics

  dba MercyOne North Iowa Specialty Care

  • Internal Medicine Physician
  • Mason City, IA
  • NPI 1609806371
  NPD (past)

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

• Hancock County Health System

  • Critical Access Hospital
  • Britt, IA
  • NPI 1912938606
  Care Compare affiliation
• Kossuth Regional Health Center

  • Critical Access Hospital
  • Algona, IA
  • NPI 1841361276
  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
• Mitchell County Memorial Hospital

  • Critical Access Hospital
  • Osage, IA
  • NPI 1033291927
  Care Compare affiliation
• Palo Alto County Hospital

  • Critical Access Hospital
  • Emmetsburg, IA
  • NPI 1790793651
  Care Compare affiliation

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

{
    "created_epoch": "1277251200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781568000000",
    "number": "1861703910",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "250 S CRESCENT DR",
            "city": "MASON CITY",
            "state": "IA",
            "postal_code": "504012926",
            "telephone_number": "641-494-5300",
            "fax_number": "641-494-5321"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "250 S CRESCENT DR",
            "city": "MASON CITY",
            "state": "IA",
            "postal_code": "504012926",
            "telephone_number": "641-494-5300",
            "fax_number": "641-494-5321"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1316 S Main St",
            "address_purpose": "LOCATION",
            "city": "Clarion",
            "state": "IA",
            "postal_code": "505252019",
            "country_code": "US",
            "telephone_number": "844-474-4321",
            "fax_number": "515-532-9250",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "403 1st St SE",
            "address_purpose": "LOCATION",
            "city": "Belmond",
            "state": "IA",
            "postal_code": "504211201",
            "country_code": "US",
            "telephone_number": "844-474-4321",
            "fax_number": "641-444-5554",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HAGAU",
        "first_name": "DENISA",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2010-06-23",
        "last_updated": "2026-06-16",
        "certification_date": "2026-06-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "RI",
            "license": "LP01915",
            "primary": false
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "IA",
            "license": "MD-43219",
            "primary": true
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "FL",
            "license": "ME167219",
            "primary": false
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "IA",
            "license": "43219",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "heartcenternurse@1245.direct.myezyaccess.com",
            "affiliation": "N",
            "endpointDescription": "Mason City Clinic Direct Email Address",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "250 S Crescent Dr",
            "city": "Mason City",
            "state": "IA",
            "country_code": "US",
            "postal_code": "504012926",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Ryan Kent Habeger, PHARM.D.
• Emily Frances Spartz Haberichter
• Analisa R Haberman, DO
• Luke Armin Hachfeld, DNP, FNP-BC, ARNP
• Sadam Husam Salem Haddadin, MD
• Radu Hagau, MD
• Christopher S Hager, CADC NCC LMHC
• Jenna Leigh Haglund, LMSW
• Nancy Kay Halford
• Abbey Hall

• Cardiovascular Disease Physician in Mason City, IA
• Providers in Mason City, IA by specialty
• Cardiovascular Disease Physician in Iowa

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 16, 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.