William Douglas Pierce, PHD
Clinical Psychologist · Yankton, SD
William Douglas Pierce, PHD is a clinical psychologist with a practice address in Yankton, South Dakota, and NPI 1205801727, issued on Feb 19, 2006. Check the license (South Dakota 431, as entered in NPPES) with the South Dakota board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William Douglas Pierce
- Credential
- PHD
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 431 SD
Self-reported in NPPES; status is on the state search - Practice location
- 1000 W 4TH St, Yankton, SD 57078
- Phone
- (605) 665-0258
- Enumerated
- Feb 19, 2006
- Record last updated
- May 23, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid ID
- 6551840 SD
- Entity
- Type 1 · individual
Also registered at 1000 W 4TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Douglas Pierce in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich South Dakota board licenses this profession
Search for license 431Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9 clinical psychologist records list a practice address in Yankton
They are 9 of the 515 NPPES records with a practice address in Yankton, and 103 clinical psychologist records in South Dakota. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 9 in Yankton → All 103 in South Dakota → Every provider in Yankton →
Other clinical psychologist records in South Dakota
- Wendy Bailey, PH.D.Milbank, SD1053474650
- Rosalie Ball, PH.D.Aberdeen, SD1477921203
- Oliver Barton, PSYDMitchell, SD1548409246
- Emily Becker, PH.D.Sioux Falls, SD1548578263
- Mark Bontreger, PSYCHOLOGISTWatertown, SD1861505190
- Marvin Bouska, MSRapid City, SD1730207952
- Kristine Brady, PH.D.Vermillion, SD1295716389
- Mark Britzman, ED.D, LPSpearfish, SD1457700361
- Jerome Buchkoski, PH.D.Sioux Falls, SD1427000561
- Dan Burow, PH.DSioux Falls, SD1790861284
Common questions
What is William Douglas Pierce, PHD's NPI number?
William Douglas Pierce, PHD's National Provider Identifier (NPI) is 1205801727, issued on Feb 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Douglas Pierce, PHD located?
The NPPES record lists a practice address at 1000 W 4TH St, Yankton, SD, 57078. Phone: (605) 665-0258. Providers update this record themselves, so call before visiting.
How can I verify William Douglas Pierce, PHD's license?
NPPES lists South Dakota license number 431, as entered by the provider. Search the South Dakota board that licenses this profession; the NPPES record confirms identity 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. 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.