Sally A. Williams, DO
Family Medicine Physician · Sioux Falls, SD
Sally A. Williams, DO is a family medicine physician with a practice address in Sioux Falls, South Dakota, and NPI 1598755001, issued on Oct 26, 2005. Check the license (South Dakota 8912, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Sally A. Williams
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 8912 SD
46021 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1000 E 23RD St, Sioux Falls, SD 57105
- Phone
- (605) 322-3241
- Enumerated
- Oct 26, 2005
- Record last updated
- Feb 19, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicaid IDs
- 43510400 WI
5605850 SD - Entity
- Type 1 · individual
8 nearest family medicine physician records → All 601 in South Dakota → Look up another NPI →
Also registered at 1000 E 23RD St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lacey BallewClinical Social Worker1003400193
- Jessica CarpenterGenetic Counselor (M.S.)1760059182
- Alyssa DemuthGenetic Counselor (M.S.)1255063897
- Rachel Elsey, PHARM.D.Pharmacist1467189308
- Alexandra Erickson, DPTPhysical Therapist1124409495
- Crystal Hattum, PHARMDOncology Pharmacist1518681436
Verify Sally A. Williams 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 8912Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
38 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Lamotrigine12 claims
- Oxcarbazepine12 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.
Sally A. Williams among 601 family medicine physician records in South Dakota
Sally A. Williams, DO is one of 601 family medicine physician records with a practice address in South Dakota. 79% 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, 88% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 65% of these records are
- Record last updated2014 · 52% 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 South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
195 family medicine physician records list a practice address in Sioux Falls
They are 195 of the 6,563 NPPES records with a practice address in Sioux Falls, and 601 family medicine physician records in South Dakota.
All 601 in South Dakota → Every provider in Sioux Falls → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- David Brechtelsbauer, MDSioux Falls, SD 571051831177674
- Valerie Hearns, MDSioux Falls, SD 571051568456846
- Daniel Heinemann, M.D.Sioux Falls, SD 571051508861329
- Leah Johnson, M.D.Sioux Falls, SD 571051588649636
- Earl Kemp, MDSioux Falls, SD 571051134191547
- Janet Lindemann, MDSioux Falls, SD 571051437143724
- Robin Meyer, D.O.Sioux Falls, SD 571051417929845
- Robert Seidel, MDSioux Falls, SD 571051760488209
Common questions
What is Sally A. Williams, DO's NPI number?
Sally A. Williams, DO's National Provider Identifier (NPI) is 1598755001, issued on Oct 26, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Sally A. Williams, DO located?
The NPPES record lists a practice address at 1000 E 23RD St, Sioux Falls, SD, 57105. Phone: (605) 322-3241. Providers update this record themselves, so call before visiting.
How can I verify Sally A. Williams, DO's license?
NPPES lists South Dakota license number 8912, 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 Sally A. Williams, DO prescribe under Medicare Part D?
In 2024, Sally A. Williams, DO had 38 Medicare Part D claims; 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.