NPPES file of Aug 9, 2026

David Owen Hornby, PHYSICIAN ASSISTANT

Medical Physician Assistant · Spokane, WA

David Owen Hornby, PHYSICIAN ASSISTANT is a medical physician assistant with a practice address in Spokane, Washington, and NPI 1659773935, issued on Sep 18, 2014. Check the license (Washington PA60599427, as entered in NPPES) with the Washington board that licenses this profession; 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
1659773935
Name
David Owen Hornby
Credential
PHYSICIAN ASSISTANT
Primary taxonomy
Medical Physician Assistant 363AM0700X
License number
PA60599427 WA
Self-reported in NPPES; status is on the state search
Practice location
5901 N Lidgerwood St Ste 126, Spokane, WA 99208
Phone
(509) 444-8888
Enumerated
Sep 18, 2014
Record last updated
Jan 31, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20151023002557); accepts Medicare assignment
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 5901 N Lidgerwood St Ste 126

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

  1. Carroll AltsholerMedical Physician Assistant1275251183
  2. Barbara Brandon, D.O.Sports Medicine (Family Medicine) Physician1114192218
  3. Christy Breyer, RNRegistered Nurse1750102216
  4. Marissa Chau, RNRegistered Nurse1134831076
  5. Tassie Conley, RPHPharmacist1821371493
  6. Macy CornmesserRegistered Nurse1477352326

Verify David Owen Hornby in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Washington board licenses this profession
    Search for license PA60599427
    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
Find 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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78% fewer Medicare Part D claims than the average medical physician assistant in 2024

250 Medicare Part D claims for 111 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. 23 claims were for opioids.

  1. David Hornby250
  2. Specialty average1,148

Most prescribed

  1. Oxycodone Hcl17 claims
  2. Ondansetron Odt16 claims
  3. Olanzapine14 claims
  4. Cephalexin12 claims
  5. Lorazepam12 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): 99.4 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 score92.7
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  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).

Industry payments in 2024: $23.46

1 payment: food and beverage; the largest payer was Glaukos Corporation. The 16,165 providers of this specialty with any payment received $1,055.00 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. David Hornby$23.46
  2. Specialty average$1,055.00

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Spokane Emergency Physicians PSSpokane, WA

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

David Owen Hornby among 1,068 medical physician assistant records in Washington

David Owen Hornby, PHYSICIAN ASSISTANT is one of 1,068 medical physician assistant records with a practice address in Washington. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 67% of them.

  • NPI issued2014 · 67% of these records are older, 28% newer
  • In a Medicare fileYes · 66% of these records are
  • In the CMS Doctors and Clinicians fileYes · 54% of these records are
  • Graduated2015 · median 2013 among the 581 with a school on file
  • Record last updated2020 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Medical Physician Assistant providers in Washington

There are 1,068 medical physician assistant records in Washington.

The 8 medical physician assistant records with the nearest ZIP codes

  1. Carroll AltsholerSpokane, WA 992081275251183
  2. Jennifer Burger, PASpokane, WA 992081205042520
  3. Maria Cassel, PA-CSpokane, WA 992081912018722
  4. Jennifer Eickstadt, PA-CSpokane, WA 992081417259060
  5. John Hunter, P.A.Spokane, WA 992081245372853
  6. Thomas Parry, P.A.-CSpokane, WA 992081932242740
  7. Linh Quan, PACSpokane, WA 992081063447068
  8. Cindi Shineflew, PA-CSpokane, WA 992081538297932

Common questions

What is David Owen Hornby, PHYSICIAN ASSISTANT's NPI number?

David Owen Hornby, PHYSICIAN ASSISTANT's National Provider Identifier (NPI) is 1659773935, issued on Sep 18, 2014. An NPI identifies a provider in billing; it is not a license.

Where is David Owen Hornby, PHYSICIAN ASSISTANT located?

The NPPES record lists a practice address at 5901 N Lidgerwood St Ste 126, Spokane, WA, 99208. Phone: (509) 444-8888. Providers update this record themselves, so call before visiting.

How can I verify David Owen Hornby, PHYSICIAN ASSISTANT's license?

NPPES lists Washington license number PA60599427, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.

How much does David Owen Hornby, PHYSICIAN ASSISTANT prescribe under Medicare Part D?

In 2024, David Owen Hornby, PHYSICIAN ASSISTANT had 250 Medicare Part D claims for 111 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.

What is David Owen Hornby, PHYSICIAN ASSISTANT's MIPS final score?

The 2023 MIPS final score is 99.4 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.