Theodore Eller, M.D.
NPI 1487690533 · Neurological Surgery Physician · Rockford, IL
Theodore Eller, M.D. is a Neurological Surgery Physician provider in Rockford, IL (NPI 1487690533).
Provider details
- NPI number
- 1487690533
- Entity type
- Individual
- Primary specialty
- Neurological Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036058013 (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
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
Mailing address
Registry dates
- Enumerated
- 2006-06-20
- Last updated
- 2010-01-26
Frequently asked questions
- What is Theodore Eller's NPI number?
- Theodore Eller's National Provider Identifier (NPI) is 1487690533, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theodore Eller's specialty?
- Theodore Eller is listed in the NPPES registry with a primary specialty of Neurological Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Theodore Eller located?
- Theodore Eller's practice location on file with NPPES is 2350 N Rockton Ave, Rockford, IL 61103-3600.
- What is Theodore Eller's phone number?
- The practice phone number listed in the NPPES registry for Theodore Eller is (815) 971-7600.
- Is Theodore Eller's NPI active?
- Yes — Theodore Eller's NPI (1487690533) is active in the NPPES registry as of the last update on 2010-01-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.