IndividualActive
Gregory Clem, M.D.
NPI 1407949993 · Occupational Medicine Physician · Springfield, IL
Provider details
- NPI number
- 1407949993
- Entity type
- Individual
- Primary specialty
- Occupational Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036-083426 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
775 Engineering Avenue
Springfield, IL 62703
Phone: (217) 522-4300
Street-level locationGet directions
Mailing address
1025 S 6th St
Springfield, IL 62703-2403
Registry dates
- Enumerated
- 2006-10-02
- Last updated
- 2008-12-09
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.