David S. Farrell, D.O.
Family Medicine Physician · Duvall, WA
David S. Farrell, D.O. is a family medicine physician with a practice address in Duvall, Washington, and NPI 1821173279, issued on Oct 26, 2006. Check the license (Washington OL20000112, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- David S. Farrell
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- OL20000112 WA
Self-reported in NPPES; status is on the state search - Practice location
- 14720 Main St NE Ste 109, Duvall, WA 98019
- Phone
- (425) 788-4889
- Enumerated
- Oct 26, 2006
- Record last updated
- Apr 7, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (425) 844-6116
- Medicare enrollment
- Enrolled (PECOS I20090803000385); accepts Medicare assignment
- Medical or professional school
- Des Moines University Of Osteopathic Medicine And Health Sciences, 2006
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 5,534 in Washington → Look up another NPI →
Also registered at 14720 Main St NE Ste 109
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Courtney HortonFamily Medicine Physician1861951162
Verify David S. Farrell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license OL20000112Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% fewer Medicare Part D claims than the average family medicine physician in 2024
3,212 Medicare Part D claims for 281 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 307 claims were for opioids.
Most prescribed
- Lisinopril151 claims
- Atorvastatin Calcium136 claims
- Levothyroxine Sodium130 claims
- Losartan Potassium127 claims
- Amlodipine Besylate118 claims
- Oxycodone Hcl95 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 MIPS final score for 2023 (Medicare payment program): 74.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- King County Public Hospital District NO 2Duvall, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David S. Farrell among 5,534 family medicine physician records in Washington
David S. Farrell, D.O. 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 58% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2006 · median 2009 among the 3,294 with a school on file
- Record last updated2021 · 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).
6 family medicine physician records list a practice address in Duvall
They are 6 of the 152 NPPES records with a practice address in Duvall, and 5,534 family medicine physician records in Washington.
All 5,534 in Washington → Every provider in Duvall → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Dannelle Carlson, NDDuvall, WA 980191316178726
- Courtney HortonDuvall, WA 980191861951162
- Sherman Lee, MDDuvall, WA 980191821070285
- Phillip Milam, MDDuvall, WA 980191376525741
- Kristi Moffat, MDDuvall, WA 980191962503235
- Emma Doody, N.D.Edmonds, WA 980201376696039
- Theodore Matheny, MDEdmonds, WA 980201619060530
- Kathryn Upton, M.DEdmonds, WA 980201952346884
Common questions
What is David S. Farrell, D.O.'s NPI number?
David S. Farrell, D.O.'s National Provider Identifier (NPI) is 1821173279, issued on Oct 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David S. Farrell, D.O. located?
The NPPES record lists a practice address at 14720 Main St NE Ste 109, Duvall, WA, 98019. Phone: (425) 788-4889. Providers update this record themselves, so call before visiting.
How can I verify David S. Farrell, D.O.'s license?
NPPES lists Washington license number OL20000112, 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 David S. Farrell, D.O. prescribe under Medicare Part D?
In 2024, David S. Farrell, D.O. had 3,212 Medicare Part D claims for 281 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is David S. Farrell, D.O.'s MIPS final score?
The 2023 MIPS final score is 74.5 of 100. 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.