Quick answers
- Does April Zumwalt accept Medicare assignment?
- Yes. Medicare's clinician data says April Zumwalt 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 April Zumwalt see?
- In 2024, CMS data shows 90 Original Medicare patients and 225 services for April Zumwalt. This counts Original Medicare only and measures volume, not quality.
- What is April Zumwalt's NPI number?
- 1366922437. 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 April Zumwalt, 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 | 90 |
|---|---|
| Services billed to Medicare | 225 |
| Different services or procedures | 26 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)63 services
- Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza (87428)30 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)30 services
- Automated urinalysis test (81003)21 services
- Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) (87880)13 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 cholesterol67%
- Arthritis49%
- Diabetes29%
- Ischemic heart disease27%
- Chronic kidney disease27%
Hospitals where April Zumwalt works
Medicare's Facility Affiliation Data lists April Zumwalt 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.
- Duncan Regional Hospital, IncDuncan, OK · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 370023
- Oklahoma Heart Hospital South, LLCOklahoma City, OK · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 370234
- Oklahoma Heart Hospital, LLCOklahoma City, OK · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 370215
Practice locations
Addresses where April Zumwalt is enrolled with Medicare (CMS data updated October 2, 2026).
- 1315 Chisholm Trail PkwyDuncan, OK 73533 (580) 606‑6852
Group practices
Medicare enrollment lists April Zumwalt as a member of this group (CMS data updated October 2, 2026).
- GDN LLC11 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Duncan
Clinicians with the same Medicare primary specialty in Duncan, OK — not a recommendation.
Other clinicians in GDN LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1366922437 |
| 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