James Simmering, MD
NPI 1700973351 · Internal Medicine Physician · Maryville, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Simmering, MD is a Internal Medicine Physician provider in Maryville, IL (NPI 1700973351).
Provider details
- NPI number
- 1700973351
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036067473 (IL)
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
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
Mailing address
Registry dates
- Enumerated
- 2006-10-06
- Last updated
- 2024-11-20
- Certified
- 2024-11-20
Frequently asked questions
- What is James Simmering's NPI number?
- James Simmering's National Provider Identifier (NPI) is 1700973351, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Simmering's specialty?
- James Simmering is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Simmering located?
- James Simmering's practice location on file with NPPES is 6812 State Route 162, Maryville, IL 62062-8553.
- What is James Simmering's phone number?
- The practice phone number listed in the NPPES registry for James Simmering is (618) 288-1122.
- Does James Simmering accept Medicare?
- James Simmering is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Simmering's NPI active?
- Yes — James Simmering's NPI (1700973351) is active in the NPPES registry as of the last update on 2024-11-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.