William Ralph Sinclair, DDS
General Practice Dentistry · Baton Rouge, LA
William Ralph Sinclair, DDS is a general practice dentistry with a practice address in Baton Rouge, Louisiana, and NPI 1427102607, issued on Jan 23, 2007. Check the license (Louisiana 4113, as entered in NPPES) with the Louisiana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Ralph Sinclair
- Credential
- DDS
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 4113 LA
Self-reported in NPPES; status is on the state search - Practice location
- 3516 N Sherwood Forest Dr, Baton Rouge, LA 70814
- Phone
- (225) 272-7236
- Enumerated
- Jan 23, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (225) 272-7236
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 1,468 in Louisiana → Look up another NPI →
Verify William Ralph Sinclair in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Louisiana board licenses this profession
Search for license 4113Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average general practice dentistry in 2024
50 Medicare Part D claims for 28 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.
Most prescribed
- Penicillin V Potassium13 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.
William Ralph Sinclair among 1,468 general practice dentistry records in Louisiana
William Ralph Sinclair, DDS is one of 1,468 general practice dentistry records with a practice address in Louisiana. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 32% of them.
- NPI issued2007 · 32% of these records are older, 40% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 75% 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 Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
152 general practice dentistry records list a practice address in Baton Rouge
They are 152 of the 12,526 NPPES records with a practice address in Baton Rouge, and 1,468 general practice dentistry records in Louisiana.
All 1,468 in Louisiana → Every provider in Baton Rouge → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Therese Dinh, D.D.S.Baton Rouge, LA 708151427060961
- Jared Eades, DDSBaton Rouge, LA 708151912571456
- Sancerie O'Rourke-Allen, D.D.S.Baton Rouge, LA 708151962420836
- Ryan Perry, DDSBaton Rouge, LA 708151083744973
- Steven Collins, DDSBaton Rouge, LA 708161497897797
- Cecil Fruge, D.D.S.Baton Rouge, LA 708161629143425
- James Hayden, DDSBaton Rouge, LA 708161023116936
- Kevin Hester, DDSBaton Rouge, LA 708161356456073
Common questions
What is William Ralph Sinclair, DDS's NPI number?
William Ralph Sinclair, DDS's National Provider Identifier (NPI) is 1427102607, issued on Jan 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William Ralph Sinclair, DDS located?
The NPPES record lists a practice address at 3516 N Sherwood Forest Dr, Baton Rouge, LA, 70814. Phone: (225) 272-7236. Providers update this record themselves, so call before visiting.
How can I verify William Ralph Sinclair, DDS's license?
NPPES lists Louisiana license number 4113, as entered by the provider. Search the Louisiana board that licenses this profession; the NPPES record confirms identity only.
How much does William Ralph Sinclair, DDS prescribe under Medicare Part D?
In 2024, William Ralph Sinclair, DDS had 50 Medicare Part D claims for 28 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.