Leonard Gutnik, M.D.
NPI 1841265543 · Internal Medicine Physician · Sioux Falls, SD
Leonard Gutnik, M.D. is a Internal Medicine Physician provider in Sioux Falls, SD (NPI 1841265543).
Provider details
- NPI number
- 1841265543
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2478 (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
2 documented practice locations
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.
Practice location
Mailing address
Additional practice locations (1)
- 1301 S. Cliff AveSte 400Sioux Falls, SD 57105-1023Phone: (605) 322-5750Fax: (605) 322-5799
Registry dates
- Enumerated
- 2006-02-17
- Last updated
- 2019-10-31
Frequently asked questions
- What is Leonard Gutnik's NPI number?
- Leonard Gutnik's National Provider Identifier (NPI) is 1841265543, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Gutnik's specialty?
- Leonard Gutnik is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Leonard Gutnik located?
- Leonard Gutnik's practice location on file with NPPES is 6100 S Louise Ave Ste 1120, Sioux Falls, SD 57108-6021.
- What is Leonard Gutnik's phone number?
- The practice phone number listed in the NPPES registry for Leonard Gutnik is (605) 504-1700.
- Is Leonard Gutnik's NPI active?
- Yes — Leonard Gutnik's NPI (1841265543) is active in the NPPES registry as of the last update on 2019-10-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.