Quick answers
- Does Mary Joan Ndumia accept Medicare assignment?
- Medicare's clinician data says Mary Joan Ndumia may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Mary Joan Ndumia see?
- In 2024, CMS data shows 128 Original Medicare patients and 133 services for Mary Joan Ndumia. This counts Original Medicare only and measures volume, not quality.
- What is Mary Joan Ndumia's NPI number?
- 1336576784. 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 Mary Joan Ndumia, 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 | 128 |
|---|---|
| Services billed to Medicare | 133 |
| Different services or procedures | 44 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)33 services
- Anesthesia for other procedure on large bowel using an endoscope (00811)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%
- High cholesterol75%
- Arthritis53%
- Ischemic heart disease43%
- Diabetes42%
- Chronic kidney disease38%
Hospitals where Mary Joan Ndumia works
Medicare's Facility Affiliation Data lists Mary Joan Ndumia 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.
- Piedmont Eastside Medical CenterSnellville, GA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 110192
Practice locations
Addresses where Mary Joan Ndumia is enrolled with Medicare (CMS data updated October 2, 2026).
- 11 Upper Riverdale RdRiverdale, GA 30274 (404) 941‑1291
Group practices
Medicare enrollment lists Mary Joan Ndumia as a member of this group (CMS data updated October 2, 2026).
- Premier Anesthesia of Georgia LLC61 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Georgia →
Other nurse anesthetists in Riverdale
Clinicians with the same Medicare primary specialty in Riverdale, GA — not a recommendation.
Other clinicians in Premier Anesthesia of Georgia LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2013 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1336576784 |
| 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