Robert Strande Chaddock, DDS
General Practice Dentistry · Sedro Woolley, WA
Robert Strande Chaddock, DDS is a general practice dentistry with a practice address in Sedro Woolley, Washington, and NPI 1942369913, issued on Dec 6, 2006. Check the license (Washington DE9780, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Robert Strande Chaddock
- Credential
- DDS
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- DE9780 WA
Self-reported in NPPES; status is on the state search - Practice location
- 830 Metcalf St, Sedro Woolley, WA 98284
- Phone
- (360) 855-0351
- Enumerated
- Dec 6, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (360) 855-9357
- Medicaid ID
- 5045356 WA
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 3,196 in Washington → Look up another NPI →
Also registered at 830 Metcalf St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hansrolf Gruener, DDSDentist1457410433
Verify Robert Strande Chaddock in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license DE9780Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
24% fewer Medicare Part D claims than the average general practice dentistry in 2024
63 Medicare Part D claims for 43 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin48 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.
Robert Strande Chaddock among 3,196 general practice dentistry records in Washington
Robert Strande Chaddock, DDS is one of 3,196 general practice dentistry records with a practice address in Washington. 57% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 59% newer
- In a Medicare fileYes · 57% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 72% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 general practice dentistry records list a practice address in Sedro Woolley
They are 8 of the 558 NPPES records with a practice address in Sedro Woolley, and 3,196 general practice dentistry records in Washington.
All 3,196 in Washington → Every provider in Sedro Woolley → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Rodney Brandt, DDS,PSSedro Woolley, WA 982841184734089
- Jon Engelby, D.M.D.Sedro Woolley, WA 982841639292238
- Larry Forsythe, D.D.S.Sedro Woolley, WA 982841093828386
- Neal Ishihara, D.D.S.Sedro Woolley, WA 982841043359565
- Jeffrey Jech, DMDSedro Woolley, WA 982841396846184
- Christine Johnson, D.D.S.Sedro Woolley, WA 982841164561585
- John Matterand, D.D.S.Sedro Woolley, WA 982841326151648
- Zachary Norris, D.D.S.Seoro Woolley, WA 982841881826683
Common questions
What is Robert Strande Chaddock, DDS's NPI number?
Robert Strande Chaddock, DDS's National Provider Identifier (NPI) is 1942369913, issued on Dec 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert Strande Chaddock, DDS located?
The NPPES record lists a practice address at 830 Metcalf St, Sedro Woolley, WA, 98284. Phone: (360) 855-0351. Providers update this record themselves, so call before visiting.
How can I verify Robert Strande Chaddock, DDS's license?
NPPES lists Washington license number DE9780, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
How much does Robert Strande Chaddock, DDS prescribe under Medicare Part D?
In 2024, Robert Strande Chaddock, DDS had 63 Medicare Part D claims for 43 beneficiaries; the average among general practice dentistry prescribers was 83. 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.