John J. Frank, MD
Internal Medicine Physician · Yankton, SD
John J. Frank, MD is an internal medicine physician with a practice address in Yankton, South Dakota, and NPI 1669473443, issued on Aug 3, 2005. Check the license (South Dakota 1244, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- John J. Frank
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 1244 SD
Self-reported in NPPES; status is on the state search - Practice location
- 1104 W 8TH St, Yankton, SD 57078
- Phone
- (605) 665-7841
- Enumerated
- Aug 3, 2005
- Record last updated
- Jun 24, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (605) 665-0546
- Medicaid ID
- 6001450 SD
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 247 in South Dakota → Look up another NPI →
Also registered at 1104 W 8TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brent Adams, MDOrthopaedic Surgery Physician1093930521
- Cassandra Arens, PAPhysician Assistant1033522966
- Sarah ArensPhysician Assistant1669912291
- Amber Authier, PA-CMedical Physician Assistant1518679851
- Clarissa Barnes, M.D.Internal Medicine Physician1770758757
- Leann Bassing, M.D.Rheumatology Physician1871784124
Verify John J. Frank 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 1244Check 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
355 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Furosemide56 claims
- Lactulose18 claims
- Simvastatin18 claims
- Levothyroxine Sodium17 claims
- Atenolol13 claims
- Divalproex Sodium Er13 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.
John J. Frank among 247 internal medicine physician records in South Dakota
John J. Frank, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 87% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2020 · 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
- Theophilus Bortier, MDYankton, SD 570781861141939
- Gregory Erickson, MDYankton, SD 570781306989090
- Susan Fanta, MDYankton, SD 570781326049313
- Jennifer Fillaus, D.O.Yankton, SD 570781760696967
- Tyler Hanson, M.D.Yankton, SD 570781700800885
- Michael Hein, MDYankton, SD 570781346241148
- Martha Holstein, MDYankton, SD 570781447601141
Common questions
What is John J. Frank, MD's NPI number?
John J. Frank, MD's National Provider Identifier (NPI) is 1669473443, issued on Aug 3, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John J. Frank, MD located?
The NPPES record lists a practice address at 1104 W 8TH St, Yankton, SD, 57078. Phone: (605) 665-7841. Providers update this record themselves, so call before visiting.
How can I verify John J. Frank, MD's license?
NPPES lists South Dakota license number 1244, 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 John J. Frank, MD prescribe under Medicare Part D?
In 2024, John J. Frank, MD had 355 Medicare Part D claims; 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.