Randall Scott Fenner, M.D.
Endocrinology, Diabetes & Metabolism Physician · Sioux Falls, SD
Randall Scott Fenner, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Sioux Falls, South Dakota, and NPI 1073780375, issued on May 15, 2008. Check the license (South Dakota 8830, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Randall Scott Fenner
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- 8830 SD
RT2213 NH
Self-reported in NPPES; status is on the state search - Practice location
- 1305 W 18TH St, Sioux Falls, SD 57105
- Phone
- (605) 328-8700
- Enumerated
- May 15, 2008
- Record last updated
- Apr 4, 2022
- Medicare enrollment
- Enrolled (PECOS I20130820000766); accepts Medicare assignment
- Medical or professional school
- Sanford School Of Medicine Of University Of South Dakota, 2008
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 25 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.
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- Swetha Alapati, MDHospitalist Physician1982051421
- Joseph Alex, MDEmergency Medicine Physician1407484819
Verify Randall Scott Fenner 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 8830Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
2,493 Medicare Part D claims for 378 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of claims.
Most prescribed
- Levothyroxine Sodium500 claims
- Metformin Hcl Er125 claims
- Glimepiride98 claims
- Methimazole95 claims
- Ozempic95 claims
- Synthroid93 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 MIPS final score for 2023 (Medicare payment program): 94 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $184.85
11 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Sanford ClinicSioux Falls, SD
- Sanford Medical CenterSioux Falls, SD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Randall Scott Fenner among 25 endocrinology, diabetes & metabolism physician records in South Dakota
Randall Scott Fenner, M.D. is one of 25 endocrinology, diabetes & metabolism physician records with a practice address in South Dakota. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 44% of them.
- NPI issued2008 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2008 · median 2008 among the 17 with a school on file
- Record last updated2022 · 44% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in South Dakota
There are 25 endocrinology, diabetes & metabolism physician records in South Dakota.
All 25 in South Dakota → Every provider in Sioux Falls → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Nour Aljariri Alhesan, MDSioux Falls, SD 571051346625415
- Brandon Allard, M.D.Sioux Falls, SD 571051124023882
- Raquel De Leon Anel-Tiangco, M.D.Sioux Falls, SD 571051740462803
- Richard Barth, M.D.Sioux Falls, SD 571051659375038
- Richard Crawford, MDSioux Falls, SD 571051164528261
- Marie Angelica Diaz, M.D.Sioux Falls, SD 571051588072532
- Marcio Griebeler, M.D.Sioux Falls, SD 571051902041197
- Karen Hutchinson, MDSioux Falls, SD 571051164536520
Common questions
What is Randall Scott Fenner, M.D.'s NPI number?
Randall Scott Fenner, M.D.'s National Provider Identifier (NPI) is 1073780375, issued on May 15, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Randall Scott Fenner, M.D. located?
The NPPES record lists a practice address at 1305 W 18TH St, Sioux Falls, SD, 57105. Phone: (605) 328-8700. Providers update this record themselves, so call before visiting.
How can I verify Randall Scott Fenner, M.D.'s license?
NPPES lists South Dakota license number 8830, 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 Randall Scott Fenner, M.D. prescribe under Medicare Part D?
In 2024, Randall Scott Fenner, M.D. had 2,493 Medicare Part D claims for 378 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Randall Scott Fenner, M.D.'s MIPS final score?
The 2023 MIPS final score is 94 of 100. 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.