Quick answers
- Does Lindsey M. Nissenbaum accept Medicare assignment?
- Yes. Medicare's clinician data says Lindsey M. Nissenbaum 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 Lindsey M. Nissenbaum see?
- In 2024, CMS data shows 223 Original Medicare patients and 240 services for Lindsey M. Nissenbaum. This counts Original Medicare only and measures volume, not quality.
- What is Lindsey M. Nissenbaum's NPI number?
- 1902256696. 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 Lindsey M. Nissenbaum, 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 | 223 |
|---|---|
| Services billed to Medicare | 240 |
| Different services or procedures | 13 |
| Participating Medicare provider | Yes |
| Average age of these patients | 79 |
Most frequent services
- Emergency department visit with high level of medical decision making (99285)93 services
- Emergency department visit with moderate level of medical decision making (99284)76 services
- Emergency department visit with low level of medical decision making (99283)45 services
- Critical care, first 30-74 minutes (99291)11 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%
- Arthritis61%
- Ischemic heart disease50%
- Chronic kidney disease46%
- Anxiety44%
Practice locations
Addresses where Lindsey M. Nissenbaum is enrolled with Medicare (CMS data updated October 2, 2026).
- 2015 Maplewood Commons DrSaint Louis, MO 63143 (314) 293‑4023
- 232 S Woods Mill RdChesterfield, MO 63017 (314) 434‑1500
Group practices
Medicare enrollment lists Lindsey M. Nissenbaum as a member of these groups (CMS data updated October 2, 2026).
- Mercy East Ambulatory Services LLC105 clinicians in the group
- Emergency Physicians of St Lukes LLC61 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Other clinicians in Mercy East Ambulatory Services LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Saint Louis University School Of Medicine |
| Graduation year | 2016 (10 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1902256696 |
| 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