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Gregory Olson, D.O.
NPI 1174841795 · Family Medicine Physician · Sioux City, IA
Gregory Olson, D.O. is a Family Medicine Physician provider in Sioux City, IA (NPI 1174841795).
Provider details
- NPI number
- 1174841795
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 4203 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(83/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 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.
Practice location
4545 Sergeant Rd
Sioux City, IA 51106-4706
Phone: (712) 274-2400
Fax: (712) 274-1487
Approximate (ZIP-level) locationGet directions
Mailing address
814 Pierce St
Sioux City, IA 51101-1058
Registry dates
- Enumerated
- 2010-05-06
- Last updated
- 2014-11-21
Frequently asked questions
- What is Gregory Olson's NPI number?
- Gregory Olson's National Provider Identifier (NPI) is 1174841795, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Olson's specialty?
- Gregory Olson is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Olson located?
- Gregory Olson's practice location on file with NPPES is 4545 Sergeant Rd, Sioux City, IA 51106-4706.
- What is Gregory Olson's phone number?
- The practice phone number listed in the NPPES registry for Gregory Olson is (712) 274-2400.
- Is Gregory Olson's NPI active?
- Yes — Gregory Olson's NPI (1174841795) is active in the NPPES registry as of the last update on 2014-11-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.