Quick answers
- Does Alvin T. Ngan accept Medicare assignment?
- Yes. Medicare's clinician data says Alvin T. Ngan 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 Alvin T. Ngan see?
- In 2024, CMS data shows 179 Original Medicare patients and 438 services for Alvin T. Ngan. This counts Original Medicare only and measures volume, not quality.
- What is Alvin T. Ngan's NPI number?
- 1245448935. 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 Alvin T. Ngan, 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 | 179 |
|---|---|
| Services billed to Medicare | 438 |
| Different services or procedures | 45 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)102 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)75 services
- Injection, dexamethasone sodium phosphate, 1 mg (J1100)74 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)57 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 cholesterol59%
- High blood pressure56%
- Arthritis55%
- Anxiety22%
- Ischemic heart disease16%
- Depression16%
Hospitals where Alvin T. Ngan works
Medicare's Facility Affiliation Data lists Alvin T. Ngan 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.
- Virginia Mason Medical CenterSeattle, WA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 500005
Practice locations
Addresses where Alvin T. Ngan is enrolled with Medicare (CMS data updated October 2, 2026).
- 1100 9th AveSeattle, WA 98101
- 11695 NE 4th StBellevue, WA 98004 (425) 637‑1855
- 4575 Sand Point Way NE, Suite 108Seattle, WA 98105 (206) 525‑8000
- 925 Seneca StSeattle, WA 98101 (206) 223‑6600
Group practices
Medicare enrollment lists Alvin T. Ngan as a member of this group (CMS data updated October 2, 2026).
- Virginia Mason Medical Center867 clinicians in the group
Specialties
- Podiatryprimary
Other podiatrists in Seattle
Clinicians with the same Medicare primary specialty in Seattle, WA — not a recommendation.
Other clinicians in Virginia Mason Medical Center
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DPM |
|---|---|
| Graduation year | 2006 (20 years since podiatric medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1245448935 |
| 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