IndividualActive
Aaron Steimel, DO
NPI 1659067874 · Internal Medicine Physician · O Fallon, MO
Provider details
- NPI number
- 1659067874
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- 2024049983 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Allopathic & Osteopathic Physicians
Profile Score
Established profile(63/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 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
20 Progress Point Pkwy Ste 108
O Fallon, MO 63368-2207
Phone: (636) 344-2400
Fax: (636) 344-2401
Street-level locationGet directions
Mailing address
Po Box 959354
Saint Louis, MO 63195-9354
Additional practice locations (1)
- 615 S New Ballas RdSaint Louis, MO 63141-8221Phone: (314) 509-5305
Registry dates
- Enumerated
- 2023-04-12
- Last updated
- 2026-06-04
- Certified
- 2026-06-04
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.