Stephen Billion, M.D.
Internal Medicine Physician · Sioux Falls, SD
Stephen Billion, M.D. is an internal medicine physician with a practice address in Sioux Falls, South Dakota, and NPI 1497790984, issued on Jun 18, 2006. Check the license (South Dakota 1618, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Stephen Billion
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 1618 SD
Self-reported in NPPES; status is on the state search - Practice location
- 1200 S 7TH Ave, Sioux Falls, SD 57105
- Phone
- (605) 336-2140
- Enumerated
- Jun 18, 2006
- Record last updated
- Apr 15, 2022
- Medicaid ID
- 6001385 SD
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 247 in South Dakota → Look up another NPI →
Also registered at 1200 S 7TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Stephen Billion 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 1618Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average internal medicine physician in 2024
351 Medicare Part D claims for 11 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Acetic Acid27 claims
- Donepezil Hcl25 claims
- Furosemide25 claims
- Humalog Kwikpen U-10013 claims
- Levothyroxine Sodium13 claims
- Hydroxychloroquine Sulfate12 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.
Stephen Billion among 247 internal medicine physician records in South Dakota
Stephen Billion, M.D. 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 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 52% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2022 · 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 Stephen Billion, M.D.'s NPI number?
Stephen Billion, M.D.'s National Provider Identifier (NPI) is 1497790984, issued on Jun 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Billion, M.D. located?
The NPPES record lists a practice address at 1200 S 7TH Ave, Sioux Falls, SD, 57105. Phone: (605) 336-2140. Providers update this record themselves, so call before visiting.
How can I verify Stephen Billion, M.D.'s license?
NPPES lists South Dakota license number 1618, 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 Stephen Billion, M.D. prescribe under Medicare Part D?
In 2024, Stephen Billion, M.D. had 351 Medicare Part D claims for 11 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.