Quick answers
- Does Joseph K. Essmyer accept Medicare assignment?
- Yes. Medicare's clinician data says Joseph K. Essmyer 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 Joseph K. Essmyer see?
- In 2024, CMS data shows 226 Original Medicare patients and 619 services for Joseph K. Essmyer. This counts Original Medicare only and measures volume, not quality.
- What is Joseph K. Essmyer's NPI number?
- 1598841876. 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 Joseph K. Essmyer, 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 | 226 |
|---|---|
| Services billed to Medicare | 619 |
| Different services or procedures | 22 |
| Participating Medicare provider | Yes |
| Average age of these patients | 63 |
Most frequent services
- Testing for presence of drug, by chemistry analyzers (80307)247 services
- Drug test(s), definitive, utilizing (1) drug identification methods able to identify individual drugs and distinguish between structural isomers (but not necessarily stereoisomers), including, but not limited to gc/ms (any type, single or tandem) and lc/ms (G0480)147 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)19 services
- Drug test(s), definitive, utilizing (1) drug identification methods able to identify individual drugs and distinguish between structural isomers (but not necessarily stereoisomers), including, but not limited to gc/ms (any type, single or tandem) and lc/ms (G0481)14 services
- Drug test(s), definitive, utilizing (1) drug identification methods able to identify individual drugs and distinguish between structural isomers (but not necessarily stereoisomers), including, but not limited to gc/ms (any type, single or tandem) and lc/ms (G0483)14 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%
- Arthritis75%
- High cholesterol71%
- Anxiety50%
- COPD45%
- Diabetes42%
Practice locations
Addresses where Joseph K. Essmyer is enrolled with Medicare (CMS data updated October 2, 2026).
- 2901 Union Rd, Suite 100Saint Louis, MO 63125 (573) 270‑8365
- 65 Doctors ParkCape Girardeau, MO 63703 (573) 651‑1687
- 907 E Reed St, American Medical MissouriHayti, MO 63851 (573) 359‑3230
Group practices
Medicare enrollment lists Joseph K. Essmyer as a member of these groups (CMS data updated October 2, 2026).
- McPherson Medical and Diagnostic LLC93 clinicians in the group
- Midwest Neurosurgeons LLC2 clinicians in the group
Specialties
- Anesthesiologyprimary
- Pain Managementalso
Other anesthesiologists in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Other clinicians in McPherson Medical and Diagnostic LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1967 (59 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1598841876 |
| 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
- 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