Kathryn Treit, MD
NPI 1811225535 · Nephrology Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathryn Treit, MD is a Nephrology Physician provider in Seattle, WA (NPI 1811225535).
Provider details
- NPI number
- 1811225535
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD60222693 (WA)
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
16 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
2,694 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) |
|---|---|---|
| Kidney Function Blood Test Panel80069 | 294 | $8 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 291 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 283 | $140 |
| Creatinine Level to Test for Kidney Function Or Muscle Injury82570 | 235 | $5 |
| Total Protein Level, Urine84156 | 223 | $4 |
| Manual Urinalysis Test With Examination Using Microscope, Automated81001 | 180 | $3 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Calcitriol | 200 | 59 |
| Amlodipine Besylate | 145 | 52 |
| Lisinopril | 96 | 37 |
| Furosemide | 95 | 29 |
| Losartan Potassium | 92 | 45 |
| Allopurinol | 88 | 29 |
| Spironolactone | 58 | 23 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-11-19
- Last updated
- 2024-07-29
- Certified
- 2024-07-29
Frequently asked questions
- What is Kathryn Treit's NPI number?
- Kathryn Treit's National Provider Identifier (NPI) is 1811225535, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathryn Treit's specialty?
- Kathryn Treit is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Kathryn Treit located?
- Kathryn Treit's practice location on file with NPPES is 325 9th Ave, Seattle, WA 98104-2420.
- What is Kathryn Treit's phone number?
- The practice phone number listed in the NPPES registry for Kathryn Treit is (206) 520-5000.
- Does Kathryn Treit accept Medicare?
- Kathryn Treit is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathryn Treit's NPI active?
- Yes — Kathryn Treit's NPI (1811225535) is active in the NPPES registry as of the last update on 2024-07-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.