Quick answers
- Does Richard R. Rattin accept Medicare assignment?
- Yes. Medicare's clinician data says Richard R. Rattin 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 Richard R. Rattin see?
- In 2024, CMS data shows 609 Original Medicare patients and 1,348 services for Richard R. Rattin. This counts Original Medicare only and measures volume, not quality.
- What is Richard R. Rattin's NPI number?
- 1316101462. 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 Richard R. Rattin, 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 | 609 |
|---|---|
| Services billed to Medicare | 1,348 |
| Different services or procedures | 62 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)232 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)226 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)103 services
- Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist (93458)92 services
- Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician (93018)88 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%
- Ischemic heart disease69%
- Arthritis50%
- Heart failure46%
- Diabetes34%
Hospitals where Richard R. Rattin works
Medicare's Facility Affiliation Data lists Richard R. Rattin 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.
- Franklin General HospitalHampton, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161308
- Hancock County Health SystemBritt, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161307
- Iowa Specialty Hospital - BelmondBelmond, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161301
- Kossuth Regional Health CenterAlgona, IA · Critical Access Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 161353
- MercyOne North Iowa Medical CenterMason City, IA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 160064
Practice locations
Addresses where Richard R. Rattin is enrolled with Medicare (CMS data updated October 2, 2026).
- 1000 4th St SWMason City, IA 50401
- 250 S Crescent DrMason City, IA 50401
- 250 S Crescent Dr, Mason City ClinicMason City, IA 50401 (641) 494‑5200
- 532 1st St NW, Hancock County Health SystemsBritt, IA 50423 (641) 843‑5000
- 635 E US Hwy 9, Mercyone Forest City Family MedicineForest City, IA 50436 (641) 585‑2904
Group practices
Medicare enrollment lists Richard R. Rattin as a member of these groups (CMS data updated October 2, 2026).
- North Iowa Mercy Clinics302 clinicians in the group
- Mason City Clinic PC14 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Iowa →
Other cardiologists in Mason City
Clinicians with the same Medicare primary specialty in Mason City, IA — not a recommendation.
Other clinicians in North Iowa Mercy Clinics
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Kansas City University Of Physicians And Surgeons |
| Graduation year | 2008 (18 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1316101462 |
| 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