Denisa Hagau, M.D.
Cardiovascular Disease · Mason City, IA
At a glance
250 S Crescent Dr, Mason City, IA 50401-2926
NPPES record updated Jun 16, 2026. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
250 S Crescent DrMason City, IA 50401-2926
Additional reported practice locations
1316 S Main StClarion, IA 505252019
Phone: 8444744321
Fax: 5155329250 403 1St St Se
Belmond, IA 504211201
Phone: 8444744321
Fax: 6414445554
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 2006
- CMS specialties
- Cardiovascular Disease (Cardiology)
Practice groups
Reported hospital affiliations
- Hancock County Health System Britt, IA
- Kossuth Regional Health Center Algona, IA
- Mercyone North Iowa Medical Center Mason City, IA
- Mitchell County Regional Health Osage, IA
- Palo Alto County Hospital Emmetsburg, IA
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $182.24 |
Reporting companies
| Company | Amount |
|---|---|
| ZOLL SERVICES LLC (A/K/A ZOLL LIFECOR CORP) | $63.94 |
| BOEHRINGER INGELHEIM PHARMACEUTICALS, INC. | $32.32 |
| E.R. SQUIBB & SONS, L.L.C. | $21.16 |
| NOVARTIS PHARMACEUTICALS CORPORATION | $18.05 |
| BAYER HEALTHCARE PHARMACEUTICALS INC. | $16.94 |
| ASTRAZENECA PHARMACEUTICALS LP | $15.60 |
| ABBOTT LABORATORIES | $14.23 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Cardiovascular Disease
- Taxonomy code
- 207RC0000X
- Enumeration date
- Jun 23, 2010
- Record updated
- Jun 16, 2026
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
207RC0000X · Primary
License reported: MD-43219 IA
207RC0000X
License reported: ME167219 FL
207RC0000X
License reported: 43219 IA
207R00000X
License reported: LP01915 RI
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
250 S Crescent DrMason City, IA 50401-2926
- Phone
- (641) 494-5300
- Fax
- (641) 494-5321
Mailing address
250 S CRESCENT DRMASON CITY, IA 504012926
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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