Allen Funk, M.D.
NPI 1306841291 · Internal Medicine Physician · Sioux Falls, SD
Allen Funk, M.D. is a Internal Medicine Physician provider in Sioux Falls, SD (NPI 1306841291).
Provider details
- NPI number
- 1306841291
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 4487 (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
21 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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Furosemide | 33 |
| Atorvastatin Calcium | 33 |
| Levetiracetam | 24 |
| Losartan Potassium | 24 |
| Potassium Chloride | 23 |
| Escitalopram Oxalate | 20 |
| Empagliflozinbrand: Jardiance | 14 |
| Amantadine Hclbrand: Amantadine | 12 |
| Meloxicam | 12 |
| Phenytoin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-16
- Last updated
- 2010-04-02
Frequently asked questions
- What is Allen Funk's NPI number?
- Allen Funk's National Provider Identifier (NPI) is 1306841291, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Allen Funk's specialty?
- Allen Funk is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Allen Funk located?
- Allen Funk's practice location on file with NPPES is 1205 S Grange, Sioux Falls, SD 57105-0410.
- What is Allen Funk's phone number?
- The practice phone number listed in the NPPES registry for Allen Funk is (605) 328-7500.
- Is Allen Funk's NPI active?
- Yes — Allen Funk's NPI (1306841291) is active in the NPPES registry as of the last update on 2010-04-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.