William A. Rizk, MD
Surgery Physician · Dakota Dunes, SD
William A. Rizk, MD is a surgery physician with a practice address in Dakota Dunes, South Dakota, and NPI 1659347128, issued on Feb 24, 2006. Check the license (South Dakota 4638, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- William A. Rizk
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- 4638 SD
Self-reported in NPPES; status is on the state search - Practice location
- 705 Sioux Point RD, Dakota Dunes, SD 57049
- Phone
- (605) 217-5500
- Enumerated
- Feb 24, 2006
- Record last updated
- May 21, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (605) 217-5515
- Medicaid IDs
- 7136895 IA
7302000 SD - Medicare enrollment
- Enrolled (PECOS I20101110001438); accepts Medicare assignment
- Medical or professional school
- Sanford School Of Medicine Of University Of South Dakota, 1994
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 114 in South Dakota → Look up another NPI →
Also registered at 705 Sioux Point RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robert Anderson, MDSurgery Physician1831165307
- William Blankenship, MDEndocrinology, Diabetes & Metabolism Physician1104890888
- Amy Dietrich, PA CPhysician Assistant1053387522
- Larry Foster, MDSurgery Physician1740256213
- Paul Johnson, MDSurgery Physician1578539540
- Brenda Van Scoyk, PA CSurgical Physician Assistant1689640153
Verify William A. Rizk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic Examiners
Search for license 4638Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average surgery physician in 2024
54 Medicare Part D claims for 22 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium20 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: $161.52
3 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 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.
One hospital affiliation
- Cass County Memorial HospitalAtlantic, IA · Critical Access Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
William A. Rizk among 114 surgery physician records in South Dakota
William A. Rizk, MD is one of 114 surgery physician records with a practice address in South Dakota. 69% 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 13% of them.
- NPI issued2006 · 13% of these records are older, 42% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1994 · median 2006 among the 72 with a school on file
- Record last updated2010 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 surgery physician records list a practice address in Dakota Dunes
They are 10 of the 326 NPPES records with a practice address in Dakota Dunes, and 114 surgery physician records in South Dakota.
All 114 in South Dakota → Every provider in Dakota Dunes → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Robert Anderson, MDDakota Dunes, SD 570491831165307
- Larry Foster, MDDakota Dunes, SD 570491740256213
- James Hegvik, MDDakota Dunes, SD 570491780099135
- Paul Johnson, MDDakota Dunes, SD 570491578539540
- Craig Nemechek, MDDakota Dunes, SD 570491063508331
- Keith Vollstedt, M.D.Dakota Dunes, SD 570491417951161
- Lawrence Volz, M.D.Dakota Dunes, SD 570491649264649
- Paul Wolpert, M.D.Dakota Dunes, SD 570491497758718
Common questions
What is William A. Rizk, MD's NPI number?
William A. Rizk, MD's National Provider Identifier (NPI) is 1659347128, issued on Feb 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William A. Rizk, MD located?
The NPPES record lists a practice address at 705 Sioux Point RD, Dakota Dunes, SD, 57049. Phone: (605) 217-5500. Providers update this record themselves, so call before visiting.
How can I verify William A. Rizk, MD's license?
NPPES lists South Dakota license number 4638, as entered by the provider. Search the South Dakota Board of Medical and Osteopathic Examiners at https://www.sdbmoe.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William A. Rizk, MD prescribe under Medicare Part D?
In 2024, William A. Rizk, MD had 54 Medicare Part D claims for 22 beneficiaries; the average among surgery physician prescribers was 147. 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.