Quick answers
- Does Marnie J. Kremer Prill accept Medicare assignment?
- Yes. Medicare's clinician data says Marnie J. Kremer Prill 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 Marnie J. Kremer Prill see?
- In 2024, CMS data shows 1,478 Original Medicare patients and 7,067 services for Marnie J. Kremer Prill. This counts Original Medicare only and measures volume, not quality.
- What is Marnie J. Kremer Prill's NPI number?
- 1366694606. 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 Marnie J. Kremer Prill, 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 | 1,478 |
|---|---|
| Services billed to Medicare | 7,067 |
| Different services or procedures | 66 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Injection, gadoterate meglumine, 0.1 ml (A9575)4,800 services
- Screening mammography (77067)550 services
- Screening 3d breast mammography (77063)548 services
- Dxa bone density measurement of hip, pelvis, spine (77080)470 services
- X-ray of chest, 2 views (71046)66 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 cholesterol62%
- High blood pressure58%
- Arthritis43%
- Osteoporosis24%
- Diabetes22%
- Anxiety17%
Practice locations
Addresses where Marnie J. Kremer Prill is enrolled with Medicare (CMS data updated October 2, 2026).
- 300 Fir StSan Diego, CA 92101 (848) 499‑2600
Group practices
Medicare enrollment lists Marnie J. Kremer Prill as a member of this group (CMS data updated October 2, 2026).
- Sharp Rees-Stealy Medical Group Inc884 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in San Diego
Clinicians with the same Medicare primary specialty in San Diego, CA — not a recommendation.
Other clinicians in Sharp Rees-Stealy Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Medical school | University Of Maryland School Of Medicine |
|---|---|
| Graduation year | 2008 (18 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1366694606 |
| 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