Joaquin Alberto Duarte Ow, MD
Internal Medicine Physician · Sioux Falls, SD
Joaquin Alberto Duarte Ow, MD is an internal medicine physician with a practice address in Sioux Falls, South Dakota, and NPI 1336589779, issued on Jun 30, 2013. Check the license on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Joaquin Alberto Duarte Ow
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- E-9940 AR
28558 MS
61158 TN
Self-reported in NPPES; status is on the state search - Practice location
- 1305 W 18TH St, Sioux Falls, SD 57105
- Phone
- (605) 328-4973
- Enumerated
- Jun 30, 2013
- Record last updated
- Jul 18, 2023
- Medicare enrollment
- Enrolled (PECOS I20231011002790); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 247 in South Dakota → Look up another NPI →
Also registered at 1305 W 18TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Beth AbrahamsonNeonatal Nurse Practitioner1013047380
- Unknown AbubakarStudent in an Organized Health Care Education/Training Program1235020959
- Mamoon AhmedHospitalist Physician1679184360
- Sameer Ahmed, MDHospitalist Physician1619549292
- Swetha Alapati, MDHospitalist Physician1982051421
- Joseph Alex, MDEmergency Medicine Physician1407484819
Verify Joaquin Alberto Duarte Ow in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic ExaminersCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average internal medicine physician in 2024
282 Medicare Part D claims for 108 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 21 claims were for opioids.
Most prescribed
- Omeprazole19 claims
- Atorvastatin Calcium17 claims
- Prednisone14 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.
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).
Joaquin Alberto Duarte Ow among 247 internal medicine physician records in South Dakota
Joaquin Alberto Duarte Ow, 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 2013, is newer than 66% of them.
- NPI issued2013 · 66% of these records are older, 31% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2009 · median 2008 among the 146 with a school on file
- Record last updated2023 · 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).
110 internal medicine physician records list a practice address in Sioux Falls
They are 110 of the 6,563 NPPES records with a practice address in Sioux Falls, and 247 internal medicine physician records in South Dakota.
All 247 in South Dakota → Every provider in Sioux Falls → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Paul Aspaas, M.D.Sioux Falls, SD 571051215932116
- Robert Behrend, MDSioux Falls, SD 571051578569000
- Emad Beshai, M.D.Sioux Falls, SD 571051528069598
- Allen Funk, M.D.Sioux Falls, SD 571051306841291
- Gregory Geise, MDSioux Falls, SD 571051144221938
- Timothy Hurley, M.D.Sioux Falls, SD 571051194720623
- Eric Larson, M.D.Sioux Falls, SD 571051134124019
- David Nelson, M.D.Sioux Falls, SD 571051538164066
Common questions
What is Joaquin Alberto Duarte Ow, MD's NPI number?
Joaquin Alberto Duarte Ow, MD's National Provider Identifier (NPI) is 1336589779, issued on Jun 30, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Joaquin Alberto Duarte Ow, MD located?
The NPPES record lists a practice address at 1305 W 18TH St, Sioux Falls, SD, 57105. Phone: (605) 328-4973. Providers update this record themselves, so call before visiting.
How can I verify Joaquin Alberto Duarte Ow, MD's license?
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 Joaquin Alberto Duarte Ow, MD prescribe under Medicare Part D?
In 2024, Joaquin Alberto Duarte Ow, MD had 282 Medicare Part D claims for 108 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.