Sassen S. Kwasa, M.D.
Hospitalist Physician · Sioux Falls, SD
Sassen S. Kwasa, M.D. is a hospitalist physician with a practice address in Sioux Falls, South Dakota, and NPI 1255699260, issued on Apr 26, 2012. Check the license (South Dakota 9510, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Sassen S. Kwasa
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 9510 SD
Self-reported in NPPES; status is on the state search - Practice location
- 1400 W 22ND St, Sioux Falls, SD 57105
- Phone
- (605) 357-1300
- Enumerated
- Apr 26, 2012
- Record last updated
- Jun 12, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20151012000528); accepts Medicare assignment
- Medical or professional school
- University Of Nebraska College Of Medicine, 2012
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 99 in South Dakota → Look up another NPI →
Also registered at 1400 W 22ND St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sara Aboelmaaty, MDStudent in an Organized Health Care Education/Training Program1407797533
- Seth Ahrendt, M.D.Psychiatry Physician1639565757
- Ayangaifiok Akpan, MBBSStudent in an Organized Health Care Education/Training Program1104679588
- Muhammad Shariq AkramStudent in an Organized Health Care Education/Training Program1861220550
- Esraa Al Manajrh, MDStudent in an Organized Health Care Education/Training Program1275362469
- Mina Al-SammarraieStudent in an Organized Health Care Education/Training Program1710731625
Verify Sassen S. Kwasa 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 9510Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% fewer Medicare Part D claims than the average hospitalist physician in 2024
299 Medicare Part D claims for 108 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 15 claims were for opioids.
Most prescribed
- Omeprazole24 claims
- Furosemide22 claims
- Losartan Potassium12 claims
- Midodrine Hcl12 claims
- Lisinopril11 claims
- Simvastatin11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 78 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Sanford ClinicSioux Falls, SD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sassen S. Kwasa among 99 hospitalist physician records in South Dakota
Sassen S. Kwasa, M.D. is one of 99 hospitalist physician records with a practice address in South Dakota. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 42% of them.
- NPI issued2012 · 42% of these records are older, 49% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2012 · median 2012 among the 75 with a school on file
- Record last updated2018 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
80 hospitalist physician records list a practice address in Sioux Falls
They are 80 of the 6,563 NPPES records with a practice address in Sioux Falls, and 99 hospitalist physician records in South Dakota.
All 99 in South Dakota → Every provider in Sioux Falls → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Marc Capitano, MDSioux Falls, SD 571051285612978
- Jeremy Cauwels, MDSioux Falls, SD 571051942243100
- Kristopher Gage, DC, MDSioux Falls, SD 571051689848046
- Jennifer Greco, M.D.Sioux Falls, SD 571051104808104
- Jeffrey Heier, MDSioux Falls, SD 571051760437222
- Scott Huckins, M.D.Sioux Falls, SD 571051508068305
- Randall Lamfers, M.D.Sioux Falls, SD 571051831157106
- Jennifer McKay, M.D.Sioux Falls, SD 571051407891716
Common questions
What is Sassen S. Kwasa, M.D.'s NPI number?
Sassen S. Kwasa, M.D.'s National Provider Identifier (NPI) is 1255699260, issued on Apr 26, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Sassen S. Kwasa, M.D. located?
The NPPES record lists a practice address at 1400 W 22ND St, Sioux Falls, SD, 57105. Phone: (605) 357-1300. Providers update this record themselves, so call before visiting.
How can I verify Sassen S. Kwasa, M.D.'s license?
NPPES lists South Dakota license number 9510, 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 Sassen S. Kwasa, M.D. prescribe under Medicare Part D?
In 2024, Sassen S. Kwasa, M.D. had 299 Medicare Part D claims for 108 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Sassen S. Kwasa, M.D.'s MIPS final score?
The 2023 MIPS final score is 78 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.