Theophilus Borketey Bortier, MD
Internal Medicine Physician · Yankton, SD
Theophilus Borketey Bortier, MD is an internal medicine physician with a practice address in Yankton, South Dakota, and NPI 1861141939, issued on Mar 23, 2022. Check the license (South Dakota 18263, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Theophilus Borketey Bortier
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 18263 SD
Self-reported in NPPES; status is on the state search - Practice location
- 501 Summit St, Yankton, SD 57078
- Phone
- (605) 668-8000
- Enumerated
- Mar 23, 2022
- Record last updated
- Jul 20, 2026
- Fax
- (605) 665-0170
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 247 in South Dakota → Look up another NPI →
Also registered at 501 Summit St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Benjamin Aaker, MDEmergency Medicine Physician1811198278
- Boakye-Yiadom Adomako, M.D.Internal Medicine Physician1720774771
- Cortney Arkfeld, RNMedical-Surgical Registered Nurse1265132245
- Susan Bruening, CRNACertified Registered Nurse Anesthetist1093881906
- Calley BuckleyCertified Registered Nurse Anesthetist1467918144
- William Cohen, MDPain Medicine (Physical Medicine & Rehabilitation) Physician1407896301
Verify Theophilus Borketey Bortier 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 18263Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average internal medicine physician in 2024
444 Medicare Part D claims for 76 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium42 claims
- Metformin Hcl26 claims
- Januvia21 claims
- Amlodipine Besylate19 claims
- Gabapentin18 claims
- Hydrochlorothiazide15 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.
Theophilus Borketey Bortier among 247 internal medicine physician records in South Dakota
Theophilus Borketey Bortier, MD is one of 247 internal 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 2022, is newer than 93% of them.
- NPI issued2022 · 93% of these records are older, 4% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2026 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
15 internal medicine physician records list a practice address in Yankton
They are 15 of the 515 NPPES records with a practice address in Yankton, and 247 internal medicine physician records in South Dakota.
All 247 in South Dakota → Every provider in Yankton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Clarissa Barnes, M.D.Yankton, SD 570781770758757
- Gregory Erickson, MDYankton, SD 570781306989090
- Susan Fanta, MDYankton, SD 570781326049313
- Jennifer Fillaus, D.O.Yankton, SD 570781760696967
- John Frank, MDYankton, SD 570781669473443
- Tyler Hanson, M.D.Yankton, SD 570781700800885
- Michael Hein, MDYankton, SD 570781346241148
- Martha Holstein, MDYankton, SD 570781447601141
Common questions
What is Theophilus Borketey Bortier, MD's NPI number?
Theophilus Borketey Bortier, MD's National Provider Identifier (NPI) is 1861141939, issued on Mar 23, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Theophilus Borketey Bortier, MD located?
The NPPES record lists a practice address at 501 Summit St, Yankton, SD, 57078. Phone: (605) 668-8000. Providers update this record themselves, so call before visiting.
How can I verify Theophilus Borketey Bortier, MD's license?
NPPES lists South Dakota license number 18263, 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 Theophilus Borketey Bortier, MD prescribe under Medicare Part D?
In 2024, Theophilus Borketey Bortier, MD had 444 Medicare Part D claims for 76 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.