Quick answers
- Does Cary C. Marquis accept Medicare assignment?
- Yes. Medicare's clinician data says Cary C. Marquis 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 Cary C. Marquis see?
- In 2024, CMS data shows 509 Original Medicare patients and 11,332 services for Cary C. Marquis. This counts Original Medicare only and measures volume, not quality.
- What is Cary C. Marquis's NPI number?
- 1801988159. 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 Cary C. Marquis, 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 | 509 |
|---|---|
| Services billed to Medicare | 11,332 |
| Different services or procedures | 55 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Injection, methylprednisolone acetate, 1 mg (J1010)3,502 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)182 services
- Aspiration and/or injection of fluid from large joint (20610)153 services
- Destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint (64635)132 services
- Destruction of lower or sacral spinal facet joint nerves using imaging guidance, each additional facet joint (64636)126 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%
- Anxiety29%
- Osteoporosis28%
- Diabetes26%
Hospitals where Cary C. Marquis works
Medicare's Facility Affiliation Data lists Cary C. Marquis 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.
- Cox Barton County HospitalLamar, MO · Critical Access Hospital · Emergency services: listed by Medicare · CCN 261325
- Cox Medical CentersSpringfield, MO · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 260040
Practice locations
Addresses where Cary C. Marquis is enrolled with Medicare (CMS data updated October 2, 2026).
- 29 NW 1st LnLamar, MO 64759 (417) 681‑5100
- 29 NW 1st Ln, Attn Medical One Clinic CredentiallingLamar, MO 64759
- 29 NW 1st Ln, Cox Barton County Medical OneLamar, MO 64759 (417) 681‑5266
Group practices
Medicare enrollment lists Cary C. Marquis as a member of these groups (CMS data updated October 2, 2026).
- Cox Barton County Hospital28 clinicians in the group
- Barton County Memorial Hospital18 clinicians in the group
- CBCH LLC18 clinicians in the group
Specialties
Find other Physical Medicine and Rehabilitation doctors in Missouri →
Other rehabilitation doctors in Missouri
Clinicians with the same Medicare primary specialty in Missouri — not a recommendation.
Other clinicians in Cox Barton County Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Kansas School Of Med (kc/wich/sal) |
| Graduation year | 1999 (27 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801988159 |
| 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