Quick answers
- Does Zachary W. Orr accept Medicare assignment?
- Yes. Medicare's clinician data says Zachary W. Orr 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 Zachary W. Orr see?
- In 2024, CMS data shows 131 Original Medicare patients and 506 services for Zachary W. Orr. This counts Original Medicare only and measures volume, not quality.
- What is Zachary W. Orr's NPI number?
- 1184221160. 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 Zachary W. Orr, 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 | 131 |
|---|---|
| Services billed to Medicare | 506 |
| Different services or procedures | 14 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)154 services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)136 services
- Hospital discharge day management, 30 minutes or less (99238)75 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)35 services
- Critical care, first 30-74 minutes (99291)30 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%
- Heart failure59%
- Diabetes55%
- Arthritis47%
- Ischemic heart disease47%
Hospitals where Zachary W. Orr works
Medicare's Facility Affiliation Data lists Zachary W. Orr 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.
- SSM Health Depaul Hospital St LouisBridgeton, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260104
Practice locations
Addresses where Zachary W. Orr is enrolled with Medicare (CMS data updated October 2, 2026).
- 1201 Garden Plaza DrFlorissant, MO 63033 (636) 536‑0285
- 12303 Depaul DrBridgeton, MO 63044 (314) 344‑6000
- 300 Forby RdEureka, MO 63025 (636) 938‑5151
Group practices
Medicare enrollment lists Zachary W. Orr as a member of these groups (CMS data updated October 2, 2026).
- Cogent Healthcare of Missouri Inc31 clinicians in the group
- Sreenu Ada MD PC3 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Florissant
Clinicians with the same Medicare primary specialty in Florissant, MO — not a recommendation.
Other clinicians in Cogent Healthcare of Missouri Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2020 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1184221160 |
| 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