Grady M. Twohig, DDS
General Practice Dentistry · Fond Du Lac, WI
Grady M. Twohig, DDS is a general practice dentistry with a practice address in Fond Du Lac, Wisconsin, and NPI 1518944529, issued on Dec 30, 2005. Check the license (Wisconsin 5872015, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Grady M. Twohig
- Credential
- DDS
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 5872015 WI
Self-reported in NPPES; status is on the state search - Practice location
- 211 S National Ave, Fond Du Lac, WI 54935
- Phone
- (920) 921-8565
- Enumerated
- Dec 30, 2005
- Record last updated
- Jan 21, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (920) 921-0121
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 2,305 in Wisconsin → Look up another NPI →
Also registered at 211 S National Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Catherine McGalloway, DDSDentist1831233014
- Christian McGalloway, DMDDentist1952235202
- Timothy Twohig, DDSDentist1649314816
Verify Grady M. Twohig in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 5872015Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% fewer Medicare Part D claims than the average general practice dentistry in 2024
47 Medicare Part D claims for 40 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
- Amoxicillin36 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: $278.00
5 payments; by number, the most common kind was food and beverage; the largest payer was Dentsply Sirona Inc. The 41,669 providers of this specialty with any payment received $597.01 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.
Grady M. Twohig among 2,305 general practice dentistry records in Wisconsin
Grady M. Twohig, DDS is one of 2,305 general practice dentistry records with a practice address in Wisconsin. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 97% 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 updated2015 · 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 Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
36 general practice dentistry records list a practice address in Fond Du Lac
They are 36 of the 1,312 NPPES records with a practice address in Fond Du Lac, and 2,305 general practice dentistry records in Wisconsin.
All 2,305 in Wisconsin → Every provider in Fond Du Lac → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Todd Bell, D.D.S.Fond Du Lac, WI 549351629013875
- Anna Bell, D.D.S.Fond Du Lac, WI 549351902832074
- Kent BotsfordFond Du Lac, WI 549351417041005
- Stephen Forsyth, DMDFond Du Lac, WI 549351518961390
- Richard Galow, DDSFond Du Lac, WI 549351639284953
- James Hoots, DDSFond Du Lac, WI 549351720008014
- Steven Kinziger, D.D.S.Fond Du Lac, WI 549351871534388
- Cailyn Lloyd, DDSFond Du Lac, WI 549351215948880
Common questions
What is Grady M. Twohig, DDS's NPI number?
Grady M. Twohig, DDS's National Provider Identifier (NPI) is 1518944529, issued on Dec 30, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Grady M. Twohig, DDS located?
The NPPES record lists a practice address at 211 S National Ave, Fond Du Lac, WI, 54935. Phone: (920) 921-8565. Providers update this record themselves, so call before visiting.
How can I verify Grady M. Twohig, DDS's license?
NPPES lists Wisconsin license number 5872015, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Grady M. Twohig, DDS prescribe under Medicare Part D?
In 2024, Grady M. Twohig, DDS had 47 Medicare Part D claims for 40 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.