Cassedy Mahrer Owen, D.O.
NPI 1053775742 · Internal Medicine Physician · Silverdale, WA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cassedy Mahrer Owen, D.O. is a Internal Medicine Physician provider in Silverdale, WA (NPI 1053775742).
Provider details
- NPI number
- 1053775742
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- OP61046548 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
32 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 20 | $127 |
| Administration of Influenza Virus VaccineG0008 | 12 | $32 |
Typical Medicare-allowed amounts for these services range $32–$127 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 50 | 23 |
| Levothyroxine Sodium | 48 | 18 |
| Atorvastatin Calcium | 45 | 23 |
| Amlodipine Besylate | 40 | 18 |
| Furosemide | 30 | 12 |
| Gabapentin | 28 | — |
| Lisinopril | 26 |
Practice location
Mailing address
Additional practice locations (2)
- 701 Park AveHennepin County Medical Center Internal MedicineMinneapolis, MN 55415-1623Phone: (507) 398-4630
- 325 9th AveSeattle, WA 98104-2420Phone: (206) 520-5000
Registry dates
- Enumerated
- 2016-04-08
- Last updated
- 2023-10-26
- Certified
- 2023-10-26
Frequently asked questions
- What is Cassedy Mahrer Owen's NPI number?
- Cassedy Mahrer Owen's National Provider Identifier (NPI) is 1053775742, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cassedy Mahrer Owen's specialty?
- Cassedy Mahrer Owen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Cassedy Mahrer Owen located?
- Cassedy Mahrer Owen's practice location on file with NPPES is 10452 Silverdale Way Nw, Silverdale, WA 98383-9411.
- What is Cassedy Mahrer Owen's phone number?
- The practice phone number listed in the NPPES registry for Cassedy Mahrer Owen is (360) 307-7300.
- Does Cassedy Mahrer Owen accept Medicare?
- Cassedy Mahrer Owen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cassedy Mahrer Owen's NPI active?
- Yes — Cassedy Mahrer Owen's NPI (1053775742) is active in the NPPES registry as of the last update on 2023-10-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.