DENISA HAGAU M.D.
NPI 1861703910
Internal Medicine - Cardiovascular Disease in Mason City, IA

Q: What is Denisa Hagau's NPI number?

The NPI number for Denisa Hagau is 1861703910. It was assigned to this individual provider in the NPPES registry on June 23, 2010.

Q: What is Denisa Hagau's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for Denisa Hagau was last updated on June 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since June 23, 2010PECOS EnrolledAccepts Medicare Assignment

250 S CRESCENT DR, MASON CITY, IA 50401(641) 494-5300(641) 494-5321 Get Directions Write a Review

NPPES record last updated: June 16, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Feb 24, 2025, Jul 11, 2024, Jun 13, 2024 and 3 more (6 updates tracked since 2017).

On this page

About Denisa Hagau M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DENISA HAGAU M.D. (NPI 1861703910) is an individual cardiovascular disease provider in Mason City, Iowa, licensed in Iowa (MD-43219) and active in the NPI registry since June 2010. She is enrolled in Medicare PECOS, is affiliated with Mercyone North Iowa Medical Center, and is a graduate of Other (2006).

NPPES Registry Identity

NPI1861703910

Entity TypeIndividualFemale

Primary Taxonomy207RC0000X

Provider Legal NameDENISA HAGAUCredential: M.D.

Location Address250 S CRESCENT DRMason City, IA 50401-2926

Mailing Address250 S Crescent DrMason City, IA 50401-2926 · (641) 494-5300 · Fax (641) 494-5321

Phone(641) 494-5300

Fax(641) 494-5321

Sole ProprietorNo

Medical School CMSOtherGraduated 2006

Enumeration DateJune 23, 2010

Last NPPES UpdateJune 16, 20266 updates tracked since enumeration

NPPES CertifiedJune 16, 2026

✔ NPI 1861703910 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

Licenses✔ Licensed in IA · MD-43219✔ Licensed in FL · ME167219✔ Licensed in IA · 43219

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

Also ListedInternal MedicineTaxonomy 207R00000X · License LP01915 (RI)

250 S CRESCENT DR, Mason City, IA 50401

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Home State Health, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Denisa Hagau M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2860781283

PECOS Enrollment IDI20250310003066

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 20

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

636 services632 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

290 services259 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

226 services205 patients

Ultrasound of heart with color-depicted blood flow, rate and valve function 93325

An ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.

144 services133 patients

Ultrasound of heart blood flow, valves and chambers, follow-up 93321

This procedure, an echocardiogram, uses sound waves to create images of your heart. It aids in assessing your heart's blood flow, chambers, and valves. It's a follow-up procedure, ensuring that your heart is functioning properly post-treatment.

138 services127 patients

Ultrasound of heart, follow-up 93308

A follow-up ultrasound of the heart, also known as an echocardiogram, is a non-invasive test that uses sound waves to create images of your heart. It helps doctors monitor your heart's function and structures after initial assessment or treatment.

133 services122 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

56 services56 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

52 services50 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

50 services30 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

47 services31 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

27 services18 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

21 services21 patients

Ultrasound of heart with probe in esophagus, with report 93312

This procedure, called a transesophageal echocardiogram, uses a small probe passed into your esophagus to capture detailed images of your heart. The report provides information about your heart's structure and function.

19 services19 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

19 services19 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

17 services16 patients

Hospital discharge day management, 30 minutes or less 99238

Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.

14 services14 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

13 services13 patients

Ultrasound of heart during rest, exercise and/or drug-induced stress with report 93350

This procedure involves using ultrasound imaging to view your heart at rest, during exercise, and/or under drug-induced stress. It helps assess how well your heart responds to exertion. A report of the findings is provided after the test.

12 services12 patients

Heart muscle strain imaging 93356

Heart muscle strain imaging is a non-invasive test that uses sound waves to create pictures of your heart. It helps doctors evaluate how well your heart muscle is working and detect any damage or disease. This can aid in diagnosing heart conditions and guiding treatment plans.

12 services12 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

11 services11 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mercyone North Iowa Medical Center

Acute Care Hospitals · Mason City, IA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number160064

Location1000 Fourth Street SWMason City, IA 50401 · Cerro Gordo County

Emergency services Birthing friendly

Hancock County Health System

Critical Access Hospitals · Britt, IA

OwnershipGovernment - Local

CMS Certification Number161307

Location532 1st St NWBritt, IA 50423 · Hancock County

Emergency services

Mitchell County Regional Health

Critical Access Hospitals · Osage, IA

OwnershipGovernment - Local

CMS Certification Number161323

Location616 North Eighth StreetOsage, IA 50461 · Mitchell County

Emergency services

Kossuth Regional Health Center

Critical Access Hospitals · Algona, IA

1/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number161353

Location1515 South Phillips StreetAlgona, IA 50511 · Kossuth County

Emergency services Birthing friendly

Palo Alto County Hospital

Critical Access Hospitals · Emmetsburg, IA

OwnershipGovernment - Local

CMS Certification Number161357

Location3201 1st StreetEmmetsburg, IA 50536 · Palo Alto County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 50401 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$122.23 typical visit price

range $52.96 – $161.40

Typical copayment $30.55 (range $13.24 – $40.35)

Most-billed visit code 99204

Established Patient

$66.36 typical visit price

range $16.91 – $131.98

Typical copayment $16.59 (range $4.22 – $32.99)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

LISA HOLT PMHNP-BC

Nurse Practitioner (Psychiatric/Mental Health)

250 S CRESCENT DR
MASON CITY, IA 50401

Cerro Gordo County (641) 494-5170

DR. RENE RECINOS M.D., PHD

Plastic Surgery

250 S CRESCENT DR
MASON CITY, IA 50401

Cerro Gordo County (641) 494-5360

DR. ANGELA KAYE HARVEY AU.D.

Audiologist

250 S CRESCENT DR, #100
MASON CITY, IA 50401

Cerro Gordo County (641) 494-5180

DR. MICHAEL W CRANE M.D.

Orthopaedic Surgery

250 S CRESCENT DR
MASON CITY, IA 50401

Cerro Gordo County (641) 494-5210

KAITLYN ELIZABETH MCDERMITT PA-C

Physician Assistant

250 S CRESCENT DR
MASON CITY, IA 50401

Cerro Gordo County (641) 494-5400

TRISHA LYNN TIBBITTS ARNP

Nurse Practitioner (Family)

250 S CRESCENT DR
MASON CITY, IA 50401

Cerro Gordo County (641) 494-5360

MASON CITY CLINIC PC

Otolaryngology

250 S CRESCENT DR
MASON CITY, IA 50401

Cerro Gordo County (800) 622-1411

DR. BYRON T BEASLEY MD

Internal Medicine (Cardiovascular Disease)

250 S CRESCENT DR
MASON CITY, IA 50401

Cerro Gordo County (641) 494-5300

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Denisa Hagau's NPI number?

The NPI number for Denisa Hagau is 1861703910. It was assigned to this individual provider in the NPPES registry on June 23, 2010.

Where is Denisa Hagau located?

Denisa Hagau practices at 250 S Crescent Dr, Mason City, IA 50401. The listed phone number is (641) 494-5300.

What is Denisa Hagau's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Denisa Hagau enrolled in Medicare?

Yes. Denisa Hagau is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Denisa Hagau accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Home State Health, Ambetter from NH Healthy Families and Ambetter from Sunflower Health Plan and 4 other insurers list Denisa Hagau as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Denisa Hagau affiliated with any hospitals?

According to CMS data, Denisa Hagau is affiliated with Mercyone North Iowa Medical Center, Hancock County Health System, Mitchell County Regional Health, Kossuth Regional Health Center and Palo Alto County Hospital.

When was this NPI record last updated?

The NPPES record for Denisa Hagau was last updated on June 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.