NPPES file of Aug 9, 2026

Sophie Macarthur Clark, MD

Family Medicine Physician · Spokane, WA

Sophie Macarthur Clark, MD is a family medicine physician with a practice address in Spokane, Washington, and NPI 1689135543, issued on Mar 25, 2019. Check the license (Washington MD61558159, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1689135543
Name
Sophie Macarthur Clark
Credential
MD
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
MD61558159 WA
Self-reported in NPPES; status is on the state search
Practice location
624 E Front Ave, Spokane, WA 99202
Phone
(509) 626-9900
Enumerated
Mar 25, 2019
Record last updated
Jul 16, 2024
Medicare enrollment
Enrolled (PECOS I20221212000788); accepts Medicare assignment
Medical or professional school
University Of Washington School Of Medicine, 2019
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 624 E Front Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Andrew Acob, M.D.Student in an Organized Health Care Education/Training Program1811422991
  2. Mohammad Alkheder, MDPsychiatry Physician1477176220
  3. Drew Anderson, MDStudent in an Organized Health Care Education/Training Program1083293575
  4. Henry Arguinchona, MDInfectious Disease Physician1740228170
  5. Ruth Armstrong, MDFamily Medicine Physician1093410235
  6. Jobe Ashby, MDInternal Medicine Physician1871288555

Verify Sophie Macarthur Clark in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWashington Medical Commission
    Search for license MD61558159
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Washington license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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68% fewer Medicare Part D claims than the average family medicine physician in 2024

1,140 Medicare Part D claims for 109 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 18 claims were for opioids.

  1. Sophie Macarthur Clark1,140
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium93 claims
  2. Lisinopril81 claims
  3. Levothyroxine Sodium61 claims
  4. Fluticasone Propionate44 claims
  5. Hydrochlorothiazide32 claims
  6. Gabapentin31 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's MIPS final score for 2023 (Medicare payment program): 82.4 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score84.6
  2. Costout of 100 · 30%30.8
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Sutter Bay HospitalsLakeport, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Sophie Macarthur Clark among 5,534 family medicine physician records in Washington

Sophie Macarthur Clark, MD is one of 5,534 family medicine physician records with a practice address in Washington. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 85% of them.

  • NPI issued2019 · 85% of these records are older, 12% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2019 · median 2009 among the 3,294 with a school on file
  • Record last updated2024 · 57% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

283 family medicine physician records list a practice address in Spokane

They are 283 of the 14,049 NPPES records with a practice address in Spokane, and 5,534 family medicine physician records in Washington.

The 8 family medicine physician records with the nearest ZIP codes

  1. David Becerril, MDSpokane, WA 992021902806771
  2. William Bradley, MDSpokane, WA 992021588658058
  3. Walter Fernau, MDSpokane, WA 992021154313096
  4. Richard Gascoigne, MDSpokane, WA 992021063450765
  5. Jeffrey Haney, MDSpokane, WA 992021184652943
  6. Susan McFadden, ARNPSpokane, WA 992021689669533
  7. Adam Newell, D.O.Spokane, WA 992021407823602
  8. Robert Numata, M.D.Spokane, WA 992021073593950

Common questions

What is Sophie Macarthur Clark, MD's NPI number?

Sophie Macarthur Clark, MD's National Provider Identifier (NPI) is 1689135543, issued on Mar 25, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Sophie Macarthur Clark, MD located?

The NPPES record lists a practice address at 624 E Front Ave, Spokane, WA, 99202. Phone: (509) 626-9900. Providers update this record themselves, so call before visiting.

How can I verify Sophie Macarthur Clark, MD's license?

NPPES lists Washington license number MD61558159, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Sophie Macarthur Clark, MD prescribe under Medicare Part D?

In 2024, Sophie Macarthur Clark, MD had 1,140 Medicare Part D claims for 109 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

What is Sophie Macarthur Clark, MD's MIPS final score?

The 2023 MIPS final score is 82.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.