Quick answers
- Does Kristina A. Johnson accept Medicare assignment?
- Yes. Medicare's clinician data says Kristina A. Johnson 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 Kristina A. Johnson see?
- In 2024, CMS data shows 519 Original Medicare patients and 2,165 services for Kristina A. Johnson. This counts Original Medicare only and measures volume, not quality.
- What is Kristina A. Johnson's NPI number?
- 1760553150. 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 Kristina A. Johnson, 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 | 519 |
|---|---|
| Services billed to Medicare | 2,165 |
| Different services or procedures | 27 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)578 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)375 services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)296 services
- Injection, dexamethasone sodium phosphate, 1 mg (J1100)224 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)214 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%
- Arthritis75%
- Depression33%
- Diabetes29%
- Chronic kidney disease28%
Hospitals where Kristina A. Johnson works
Medicare's Facility Affiliation Data lists Kristina A. Johnson 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
- Mary Greeley Medical CenterAmes, IA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 160030
- St Anthony Regional Hospital & Nursing HomeCarroll, IA · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 161382
- Story County HospitalNevada, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161333
Practice locations
Addresses where Kristina A. Johnson is enrolled with Medicare (CMS data updated October 2, 2026).
- 1214 S Grant RdCarroll, IA 51401 (712) 792‑1500
- 1215 Duff AveAmes, IA 50010 (515) 239‑4400
- 3500 University Blvd, Suite 1001Ames, IA 50010 (515) 239‑3040
- 421 E Merle Hibbs BlvdMarshalltown, IA 50158 (641) 752‑0654
Group practices
Medicare enrollment lists Kristina A. Johnson as a member of this group (CMS data updated October 2, 2026).
- McFarland Clinic PC363 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Carroll
Clinicians with the same Medicare primary specialty in Carroll, 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 | PA |
|---|---|
| Graduation year | 2006 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1760553150 |
| 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