Quick answers
- Does Philip G. Massey accept Medicare assignment?
- Yes. Medicare's clinician data says Philip G. Massey 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 Philip G. Massey see?
- In 2024, CMS data shows 462 Original Medicare patients and 1,144 services for Philip G. Massey. This counts Original Medicare only and measures volume, not quality.
- What is Philip G. Massey's NPI number?
- 1700832730. 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 Philip G. Massey, 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 | 462 |
|---|---|
| Services billed to Medicare | 1,144 |
| Different services or procedures | 47 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)443 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)124 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)113 services
- Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days (93296)50 services
- Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (93294)48 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%
- Arthritis49%
- Atrial fibrillation35%
- Ischemic heart disease32%
- Diabetes30%
Hospitals where Philip G. Massey works
Medicare's Facility Affiliation Data lists Philip G. Massey 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.
- Swedish IssaquahIssaquah, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 500152
- Swedish Medical CenterSeattle, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 500027
- Swedish Medical Center / Cherry HillSeattle, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 500025
Practice locations
Addresses where Philip G. Massey is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 9; the Medicare profile lists all.
- 10416 5th Ave NESeattle, WA 98125 (206) 517‑6700
- 1101 Madison St, Suite 301Seattle, WA 98104 (206) 505‑1300
- 1200 12th Ave SSeattle, WA 98144 (206) 326‑2400
- 12910 Totem Lake Blvd NE, Suite 101Kirkland, WA 98034 (425) 814‑5000
- 1801 Lind Ave SWRenton, WA 98057 (425) 227‑3700
Group practices
Medicare enrollment lists Philip G. Massey as a member of this group (CMS data updated October 2, 2026).
- Pacmed Clinics209 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Washington →
Other cardiologists in Seattle
Clinicians with the same Medicare primary specialty in Seattle, WA — not a recommendation.
Other clinicians in Pacmed Clinics
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Vanderbilt University School Of Medicine |
| Graduation year | 1996 (30 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1700832730 |
| 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