Maribel Castellanos, FNP-C

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

• Boone County Hospital Hospital · Boone, IA
• Greene County Medical Center Hospital · Jefferson, IA

Colleagues at Greene County Medical Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 15 clinicians in the practice; 12 are shown here.

• Mark N Abraham, MD Surgery Physician · Carroll, IA
• Mr. Alec Marshall Antanaitis Gerontology Nurse Practitioner · Jefferson, IA
• Kaitlyn Sierra Bravek Physician Assistant · West Des Moines, IA
• Dr. Thomas W. Fagg, DO Family Medicine Physician · Jefferson, IA
• Mary Jo Koch Mental Health Counselor · Boone, IA
• Karen Kay Luken, NP Nurse Practitioner · Clive, IA
• Mary Makenna Pedersen, FNP-C Primary Care Nurse Practitioner · Jefferson, IA
• Kayla Rene Promes, CNP Nurse Practitioner · Jefferson, IA
• Mrs. Diana Beatrice Smith, FNPC-C Family Nurse Practitioner · Fort Dodge, IA
• Dr. Kelsey Mae Sukovaty, DPM Foot & Ankle Surgery Podiatrist · Waterloo, IA
• Mrs. Dawn Elizabeth Tingwald, ARNP Psychiatric/Mental Health Nurse Practitioner · Jefferson, IA
• Jeffrey Robert Wahl, DO Orthopaedic Surgery Physician · Jefferson, IA

Other providers in Gowrie

• Jessica Ann Drees, ARNP, FNP-C

  Individual Family Nurse Practitioner · NPI 1619754181

  1800 Main St, Gowrie, IA 50543-7438 · (712) 464-8891

• MS. Rochelle Guess, ARNP

  Individual Family Nurse Practitioner · NPI 1154306272

  1800 Main St, Gowrie, IA 50543-7438 · (515) 352-3891