Quick answers
- Does Esteffania C. Villegas-Santamaria accept Medicare assignment?
- Yes. Medicare's clinician data says Esteffania C. Villegas-Santamaria accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Esteffania C. Villegas-Santamaria see?
- In 2024, CMS data shows 1,274 Original Medicare patients and 2,528 services for Esteffania C. Villegas-Santamaria. This counts Original Medicare only and measures volume, not quality.
- What is Esteffania C. Villegas-Santamaria's NPI number?
- 1457804395. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Esteffania C. Villegas-Santamaria, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 1,274 |
|---|---|
| Services billed to Medicare | 2,528 |
| Different services or procedures | 40 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)515 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)509 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)171 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)167 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)149 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis46%
- Ischemic heart disease32%
- Atrial fibrillation32%
- Diabetes29%
Hospitals where Esteffania C. Villegas-Santamaria works
Medicare's Facility Affiliation Data lists Esteffania C. Villegas-Santamaria at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Boone County HospitalBoone, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161372
- Iowa Specialty Hospital - BelmondBelmond, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161301
- Mary Greeley Medical CenterAmes, IA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 160030
- MercyOne Des Moines Medical CenterDes Moines, IA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 160083
- Story County HospitalNevada, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161333
Practice locations
Addresses where Esteffania C. Villegas-Santamaria is enrolled with Medicare (CMS data updated October 2, 2026).
- 1111 Duff AveAmes, IA 50010 (515) 239‑4472
- 1111 Duff Ave, Suite 1431Ames, IA 50010 (515) 239‑6882
- 1316 S Main StClarion, IA 50525 (515) 532‑2811
- 403 1st St SE, Iowa Specialty Hospital BelmondBelmond, IA 50421 (641) 444‑3500
- 640 S 19th StNevada, IA 50201 (515) 382‑2111
Group practices
Medicare enrollment lists Esteffania C. Villegas-Santamaria as a member of these groups (CMS data updated October 2, 2026).
- McFarland Clinic PC363 clinicians in the group
- Iowa Specialty Hospital- Clarion98 clinicians in the group
- Belmond Community Hospital92 clinicians in the group
- Mary Greeley Medical Center31 clinicians in the group
- Story County Hospital16 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Iowa →
Other cardiologists in Ames
Clinicians with the same Medicare primary specialty in Ames, IA — not a recommendation.
Other clinicians in McFarland Clinic PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2012 (14 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457804395 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians