William Daniel Peffley, DO
Family Medicine Physician · Dallas, OR
William Daniel Peffley, DO is a family medicine physician with a practice address in Dallas, Oregon, and NPI 1275548562, issued on Jul 29, 2006. Check the license (Oregon DO27471, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- William Daniel Peffley
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- DO27471 OR
Self-reported in NPPES; status is on the state search - Practice location
- 607 SE Jefferson St, Dallas, OR 97338
- Phone
- (503) 623-1200
- Enumerated
- Jul 29, 2006
- Record last updated
- Apr 5, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (503) 623-1414
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,847 in Oregon → Look up another NPI →
Also registered at 607 SE Jefferson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Joerger, PSYCHOLOGISTPsychologist1205388949
Verify William Daniel Peffley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license DO27471Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% fewer Medicare Part D claims than the average family medicine physician in 2024
2,731 Medicare Part D claims for 163 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 239 claims were for opioids.
Most prescribed
- Atorvastatin Calcium194 claims
- Levothyroxine Sodium124 claims
- Losartan Potassium104 claims
- Hydrocodone-Acetaminophen99 claims
- Lisinopril86 claims
- Amlodipine Besylate81 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.
Industry payments in 2024: $458.59
22 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
William Daniel Peffley among 2,847 family medicine physician records in Oregon
William Daniel Peffley, DO is one of 2,847 family medicine physician records with a practice address in Oregon. 75% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 53% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2012 · 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 Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 family medicine physician records list a practice address in Dallas
They are 14 of the 410 NPPES records with a practice address in Dallas, and 2,847 family medicine physician records in Oregon.
All 2,847 in Oregon → Every provider in Dallas → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Christopher Edwardson, MDDallas, OR 973381689667560
- Charles Essex, M.D.Dallas, OR 973381033294053
- Tom Flaming, D.O.Dallas, OR 973381497727127
- John Hadley, DODallas, OR 973381508889320
- Jeffrey Humphrey, D.O.Dallas, OR 973381740253103
- Steven Latulippe, M.D.Dallas, OR 973381992814990
- Jonathan Lindgren, M.D.Dallas, OR 973381861615668
- Minh-Phong Ngo, MDDallas, OR 973381629530167
Common questions
What is William Daniel Peffley, DO's NPI number?
William Daniel Peffley, DO's National Provider Identifier (NPI) is 1275548562, issued on Jul 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Daniel Peffley, DO located?
The NPPES record lists a practice address at 607 SE Jefferson St, Dallas, OR, 97338. Phone: (503) 623-1200. Providers update this record themselves, so call before visiting.
How can I verify William Daniel Peffley, DO's license?
NPPES lists Oregon license number DO27471, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Daniel Peffley, DO prescribe under Medicare Part D?
In 2024, William Daniel Peffley, DO had 2,731 Medicare Part D claims for 163 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
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.