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Fred Geisler, M.D.
NPI 1912993403 · Neurological Surgery Physician · Aurora, IL
Fred Geisler, M.D. is a Neurological Surgery Physician provider in Aurora, IL (NPI 1912993403).
Provider details
- NPI number
- 1912993403
- Entity type
- Individual
- Primary specialty
- Neurological Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036-085216 (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
2020 Ogden Ave
Suite 335
Aurora, IL 60504-5894
Phone: (630) 236-4303
Fax: (630) 236-4317
Street-level locationGet directions
Mailing address
2020 Ogden Ave
Aurora, IL 60504-5894
Registry dates
- Enumerated
- 2005-09-21
- Last updated
- 2014-06-26
Frequently asked questions
- What is Fred Geisler's NPI number?
- Fred Geisler's National Provider Identifier (NPI) is 1912993403, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Fred Geisler's specialty?
- Fred Geisler is listed in the NPPES registry with a primary specialty of Neurological Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Fred Geisler located?
- Fred Geisler's practice location on file with NPPES is 2020 Ogden Ave, Aurora, IL 60504-5894.
- What is Fred Geisler's phone number?
- The practice phone number listed in the NPPES registry for Fred Geisler is (630) 236-4303.
- Is Fred Geisler's NPI active?
- Yes — Fred Geisler's NPI (1912993403) is active in the NPPES registry as of the last update on 2014-06-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.