Quick answers
- Does Joanna C. Garritano-Roger accept Medicare assignment?
- Yes. Medicare's clinician data says Joanna C. Garritano-Roger 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 Joanna C. Garritano-Roger see?
- In 2024, CMS data shows 66 Original Medicare patients and 1,505 services for Joanna C. Garritano-Roger. This counts Original Medicare only and measures volume, not quality.
- What is Joanna C. Garritano-Roger's NPI number?
- 1235249186. 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 Joanna C. Garritano-Roger, 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 | 66 |
|---|---|
| Services billed to Medicare | 1,505 |
| Different services or procedures | 65 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)33 services
- Infusion into a vein for hydration, each additional hour (96361)29 services
- Routine electrocardiogram (ecg) using at least 12 leads with tracing (93005)23 services
- Injection of additional new drug or substance into vein (96375)22 services
- Infusion, normal saline solution, sterile (500 ml = 1 unit) (J7040)22 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 pressure71%
- Arthritis50%
- High cholesterol44%
- Chronic kidney disease32%
- Diabetes26%
- Atrial fibrillation21%
Practice locations
Addresses where Joanna C. Garritano-Roger is enrolled with Medicare (CMS data updated October 2, 2026).
- 10452 Silverdale Way NWSilverdale, WA 98383 (360) 307‑7300
Group practices
Medicare enrollment lists Joanna C. Garritano-Roger as a member of this group (CMS data updated October 2, 2026).
- Kaiser Foundation Health Plan of Washington1,526 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Silverdale
Clinicians with the same Medicare primary specialty in Silverdale, WA — not a recommendation.
Other clinicians in Kaiser Foundation Health Plan of Washington
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loyola University Of Chicago, Stritch School Of Medicine |
| Graduation year | 1999 (27 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1235249186 |
| 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