Arielle Kloss, MD
NPI 1427555416 · Internal Medicine Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Arielle Kloss, MD is a Internal Medicine Physician provider in Seattle, WA (NPI 1427555416).
Provider details
- NPI number
- 1427555416
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD2021-0514 (NM)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
613 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 469 | $77 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 144 | $79 |
Typical Medicare-allowed amounts for these services range $77–$79 (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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 31 | 26 |
| Amlodipine Besylate | 19 | — |
| Oxycodone Hcl | 16 | 16 |
| Metoprolol Succinate | 16 | 14 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 13 | 12 |
| Tamsulosin Hcl | 12 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-04-06
- Last updated
- 2021-07-09
- Certified
- 2021-07-09
Frequently asked questions
- What is Arielle Kloss's NPI number?
- Arielle Kloss's National Provider Identifier (NPI) is 1427555416, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Arielle Kloss's specialty?
- Arielle Kloss is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Arielle Kloss located?
- Arielle Kloss's practice location on file with NPPES is 850 Republican St, Seattle, WA 98109.
- What is Arielle Kloss's phone number?
- The practice phone number listed in the NPPES registry for Arielle Kloss is (206) 543-6806.
- Does Arielle Kloss accept Medicare?
- Arielle Kloss is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Arielle Kloss's NPI active?
- Yes — Arielle Kloss's NPI (1427555416) is active in the NPPES registry as of the last update on 2021-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.