Joel Vincent Merkwan, PH.D.
Clinical Psychologist · Yankton, SD
Joel Vincent Merkwan, PH.D. is a clinical psychologist with a practice address in Yankton, South Dakota, and NPI 1699810879, issued on Feb 21, 2007. Check the license (South Dakota 490, 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
- Joel Vincent Merkwan
- Credential
- PH.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License numbers
- 490 SD
393 ND
Self-reported in NPPES; status is on the state search - Practice location
- 327 Broadway Ave Ste 15, Yankton, SD 57078
- Phone
- (605) 661-6128
- Enumerated
- Feb 21, 2007
- Record last updated
- Jun 29, 2010 (not updated in 16 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100831000699); accepts Medicare assignment
- Entity
- Type 1 · individual
Verify Joel Vincent Merkwan 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 490Check 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 Joel Vincent Merkwan, PH.D.'s NPI number?
Joel Vincent Merkwan, PH.D.'s National Provider Identifier (NPI) is 1699810879, issued on Feb 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Joel Vincent Merkwan, PH.D. located?
The NPPES record lists a practice address at 327 Broadway Ave Ste 15, Yankton, SD, 57078. Phone: (605) 661-6128. Providers update this record themselves, so call before visiting.
How can I verify Joel Vincent Merkwan, PH.D.'s license?
NPPES lists South Dakota license number 490, 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.