Margaret Clark, MD
NPI 1255658852 · Internal Medicine Physician · Spokane, WA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Clark, MD is a Internal Medicine Physician provider in Spokane, WA (NPI 1255658852).
Provider details
- NPI number
- 1255658852
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD60349632 (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
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
106 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 | 84 | $69 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 22 | $107 |
Typical Medicare-allowed amounts for these services range $69–$107 (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.
Practice location
Mailing address
Additional practice locations (2)
- 413 Lilly Rd NeOlympia, WA 98506-5133Phone: (360) 491-9480Fax: (360) 456-2413
- 800 W 5th AveSpokane, WA 99204-2803Phone: (509) 838-2531Fax: (509) 755-6580
Registry dates
- Enumerated
- 2010-04-23
- Last updated
- 2021-05-03
- Certified
- 2021-05-03
Frequently asked questions
- What is Margaret Clark's NPI number?
- Margaret Clark's National Provider Identifier (NPI) is 1255658852, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Clark's specialty?
- Margaret Clark is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Clark located?
- Margaret Clark's practice location on file with NPPES is 101 W 8th Ave, Spokane, WA 99204-2307.
- What is Margaret Clark's phone number?
- The practice phone number listed in the NPPES registry for Margaret Clark is (509) 459-9010.
- Does Margaret Clark accept Medicare?
- Margaret Clark is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Clark's NPI active?
- Yes — Margaret Clark's NPI (1255658852) is active in the NPPES registry as of the last update on 2021-05-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.