John Frank, MD
NPI 1669473443 · Internal Medicine Physician · Yankton, SD
John Frank, MD is a Internal Medicine Physician provider in Yankton, SD (NPI 1669473443).
Provider details
- NPI number
- 1669473443
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 1244 (SD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Furosemide | 56 |
| Simvastatin | 18 |
| Lactulose | 18 |
| Levothyroxine Sodium | 17 |
| Atenolol | 13 |
| Topiramate | 13 |
| Divalproex Sodiumbrand: Divalproex Sodium Er | 13 |
| Sertraline Hcl | 13 |
| Famotidine | 13 |
| Metformin Hcl | 13 |
These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-03
- Last updated
- 2020-06-24
- Certified
- 2020-06-24
Frequently asked questions
- What is John Frank's NPI number?
- John Frank's National Provider Identifier (NPI) is 1669473443, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Frank's specialty?
- John Frank is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Frank located?
- John Frank's practice location on file with NPPES is 1104 W 8th St, Yankton, SD 57078-3306.
- What is John Frank's phone number?
- The practice phone number listed in the NPPES registry for John Frank is (605) 665-7841.
- Is John Frank's NPI active?
- Yes — John Frank's NPI (1669473443) is active in the NPPES registry as of the last update on 2020-06-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.