Brianna Byllesby, PHD
Clinical Psychologist · Vermillion, SD
Brianna Byllesby, PHD is a clinical psychologist with a practice address in Vermillion, South Dakota, and NPI 1235816745, issued on Jun 28, 2023. Check the license (South Dakota 648, 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
- Brianna Byllesby
- Credential
- PHD
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 648 SD
Self-reported in NPPES; status is on the state search - Practice location
- 414 E Clark St, Vermillion, SD 57069
- Phone
- (605) 658-3723
- Enumerated
- Jun 28, 2023
- Record last updated
- Jun 28, 2023
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 103 in South Dakota → Look up another NPI →
Also registered at 414 E Clark St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lucas GoetzStudent in an Organized Health Care Education/Training Program1205782679
Verify Brianna Byllesby 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 648Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Brianna Byllesby among 103 clinical psychologist records in South Dakota
Brianna Byllesby, PHD is one of 103 clinical psychologist records with a practice address in South Dakota. 17% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2023, is newer than 94% of them.
- NPI issued2023 · 94% of these records are older, under 1% newer
- In a Medicare fileNo · 17% of these records are
- In the CMS Doctors and Clinicians fileNo · 31% of these records are
- Record last updated2023 · 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 103TC0700X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 clinical psychologist records list a practice address in Vermillion
They are 4 of the 179 NPPES records with a practice address in Vermillion, and 103 clinical psychologist records in South Dakota. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 103 in South Dakota → Every provider in Vermillion → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Kristine Brady, PH.D.Vermillion, SD 570691295716389
- Sandra Caraway, PH.D.Vermillion, SD 570691548946023
- Mark Daniels, PH.D.Vermillion, SD 570691194908889
- Joel Merkwan, PH.D.Yankton, SD 570781699810879
- Erick MesslerYankton, SD 570781225310345
- Kathryn MooreYankton, SD 570781457037210
- Danelle Pennock, PSYDYankton, SD 570781740411859
- William Pierce, PHDYankton, SD 570781205801727
Common questions
What is Brianna Byllesby, PHD's NPI number?
Brianna Byllesby, PHD's National Provider Identifier (NPI) is 1235816745, issued on Jun 28, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Brianna Byllesby, PHD located?
The NPPES record lists a practice address at 414 E Clark St, Vermillion, SD, 57069. Phone: (605) 658-3723. Providers update this record themselves, so call before visiting.
How can I verify Brianna Byllesby, PHD's license?
NPPES lists South Dakota license number 648, 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.