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Byron Williamson, DO
NPI 1518915081 · Internal Medicine Physician · Marion, IL
Byron Williamson, DO is a Internal Medicine Physician provider in Marion, IL (NPI 1518915081).
Provider details
- NPI number
- 1518915081
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 036069470 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
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
3333 W Deyoung St
Marion, IL 62959-5884
Phone: (618) 998-7000
Street-level locationGet directions
Mailing address
4750 Hempstead Station Dr
Kettering, OH 45429-5164
Registry dates
- Enumerated
- 2006-05-05
- Last updated
- 2008-06-16
Frequently asked questions
- What is Byron Williamson's NPI number?
- Byron Williamson's National Provider Identifier (NPI) is 1518915081, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Byron Williamson's specialty?
- Byron Williamson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Byron Williamson located?
- Byron Williamson's practice location on file with NPPES is 3333 W Deyoung St, Marion, IL 62959-5884.
- What is Byron Williamson's phone number?
- The practice phone number listed in the NPPES registry for Byron Williamson is (618) 998-7000.
- Is Byron Williamson's NPI active?
- Yes — Byron Williamson's NPI (1518915081) is active in the NPPES registry as of the last update on 2008-06-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.