Quick answers
- Does Joel A. Gross accept Medicare assignment?
- Yes. Medicare's clinician data says Joel A. Gross 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 Joel A. Gross see?
- In 2024, CMS data shows 775 Original Medicare patients and 1,741 services for Joel A. Gross. This counts Original Medicare only and measures volume, not quality.
- What is Joel A. Gross's NPI number?
- 1659438844. 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 Joel A. Gross, 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 | 775 |
|---|---|
| Services billed to Medicare | 1,741 |
| Different services or procedures | 61 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- X-ray of chest, 1 view (71045)329 services
- Ct scan of abdomen and pelvis with contrast (74177)143 services
- Ct scan of upper spine without contrast (72125)119 services
- Ct scan of blood vessels of chest with contrast (71275)100 services
- Ct scan of lower spine without contrast (72131)88 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 cholesterol66%
- Arthritis45%
- Depression35%
- Ischemic heart disease34%
- Atrial fibrillation34%
Hospitals where Joel A. Gross works
Medicare's Facility Affiliation Data lists Joel A. Gross 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.
- Harborview Medical CenterSeattle, WA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 500064
- Olympic Medical CenterPort Angeles, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500072
- PeaceHealth St Joseph Medical CenterBellingham, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 500030
- Skagit Valley HospitalMount Vernon, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500003
- University of Washington Medical CenterSeattle, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 500008
Practice locations
Addresses where Joel A. Gross is enrolled with Medicare (CMS data updated October 2, 2026).
- 1550 N 115th StSeattle, WA 98133 (206) 364‑0500
- 1570 N 115th StSeattle, WA 98133 (206) 306‑2800
- 1701 Columbia RdSeattle, WA 98195 (206) 598‑3100
- 1959 NE Pacific StSeattle, WA 98195 (206) 598‑4333
- 325 9th AveSeattle, WA 98104 (206) 731‑3000
Group practices
Medicare enrollment lists Joel A. Gross as a member of this group (CMS data updated October 2, 2026).
- The Association of University Physicians3,535 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Seattle
Clinicians with the same Medicare primary specialty in Seattle, WA — not a recommendation.
Other clinicians in The Association of University Physicians
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Davis School Of Medicine |
| Graduation year | 1994 (32 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1659438844 |
| 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