Dennis Wen, MD
NPI 1689662066 · Neurological Surgery Physician · Elgin, IL
Enrolled with Medicare as Practitioner - Neurosurgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dennis Wen, MD is a Neurological Surgery Physician provider in Elgin, IL (NPI 1689662066).
Provider details
- NPI number
- 1689662066
- Entity type
- Individual
- Primary specialty
- Neurological Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036-095129 (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
- 2005-10-11
- Last updated
- 2025-05-29
- Certified
- 2025-05-29
Frequently asked questions
- What is Dennis Wen's NPI number?
- Dennis Wen's National Provider Identifier (NPI) is 1689662066, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dennis Wen's specialty?
- Dennis Wen is listed in the NPPES registry with a primary specialty of Neurological Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Dennis Wen located?
- Dennis Wen's practice location on file with NPPES is 87 N Airlite St Ste 220, Elgin, IL 60123-4995.
- What is Dennis Wen's phone number?
- The practice phone number listed in the NPPES registry for Dennis Wen is (847) 695-6611.
- Does Dennis Wen accept Medicare?
- Dennis Wen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dennis Wen's NPI active?
- Yes — Dennis Wen's NPI (1689662066) is active in the NPPES registry as of the last update on 2025-05-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.