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Dr. Harold C. Hamann, MD

Urology (Urology Physician)

  • Medicare participating

At a glance

Years since graduation
9
In the NPI registry since
2017
Medicare patients seen, 2024
355

Licensed in Illinois since 2022, according to the Illinois Department of Financial and Professional Regulation. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is

Education and training

  • 2017Registered with an NPI (national billing number; not a license date)

Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Urology Physician primary
    IN license 01098666A · IL license 036159169 (first issued 2022; active) · WI license 101568

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Urology per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
355
Services billed
1,033
Patients’ average age
77
Most frequent Medicare services, 2023
ServiceTimesPatients
New patient office or other outpatient visit, 45-59 minutes6060
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes5252
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes3830
Established patient office or other outpatient visit, 30-39 minutes3529
Ultrasound measurement of bladder capacity after voiding2524
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes2217
Insertion of stent in ureter using an endoscope1313

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Medicare prescriptions

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Payments from drug and device companies

In 2025, 4 companies reported 7 payments worth $718 in total to this clinician.

By company
Calyxo, Inc.$298
Boston Scientific Corporation$247
Valencia Technologies Corporation$158
Tolmar, Inc.$15.21
By type
Food and Beverage$718

From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.

Who received the most in Indiana →

Other Urology clinicians in Lafayette

Sources

NPI registry (CMS NPPES, November 2026; record last updated July 23, 2026), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1578097952. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.