Mary Ann Arndt, M.D.
NPI 1750458329 · Nephrology Physician · Spokane, WA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Ann Arndt, M.D. is a Nephrology Physician provider in Spokane, WA (NPI 1750458329).
Provider details
- NPI number
- 1750458329
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD157887 (OR)
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
19 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
723 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 | 376 | $76 |
| Hemodialysis Procedure With Physician Evaluation90935 | 151 | $69 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 89 | $116 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 58 | $169 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 34 | $48 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-29
- Last updated
- 2016-09-13
Frequently asked questions
- What is Mary Ann Arndt's NPI number?
- Mary Ann Arndt's National Provider Identifier (NPI) is 1750458329, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Ann Arndt's specialty?
- Mary Ann Arndt is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Ann Arndt located?
- Mary Ann Arndt's practice location on file with NPPES is 105 W 8th Ave, Spokane, WA 99204-2302.
- What is Mary Ann Arndt's phone number?
- The practice phone number listed in the NPPES registry for Mary Ann Arndt is (509) 340-0930.
- Does Mary Ann Arndt accept Medicare?
- Mary Ann Arndt is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Ann Arndt's NPI active?
- Yes — Mary Ann Arndt's NPI (1750458329) is active in the NPPES registry as of the last update on 2016-09-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.