Mark Simms, MD
NPI 1154373918 · Pediatric Neurodevelopmental Disabilities Physician · Brookfield, WI
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Simms, MD is a Pediatric Neurodevelopmental Disabilities Physician provider in Brookfield, WI (NPI 1154373918).
Provider details
- NPI number
- 1154373918
- Entity type
- Individual
- Primary specialty
- Pediatric Neurodevelopmental Disabilities PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 35801 (WI)
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
- 2006-05-17
- Last updated
- 2014-10-10
Frequently asked questions
- What is Mark Simms's NPI number?
- Mark Simms's National Provider Identifier (NPI) is 1154373918, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Simms's specialty?
- Mark Simms is listed in the NPPES registry with a primary specialty of Pediatric Neurodevelopmental Disabilities Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Simms located?
- Mark Simms's practice location on file with NPPES is 13800 W North Ave, Brookfield, WI 53005-4977.
- What is Mark Simms's phone number?
- The practice phone number listed in the NPPES registry for Mark Simms is (262) 432-6600.
- Does Mark Simms accept Medicare?
- Mark Simms is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Simms's NPI active?
- Yes — Mark Simms's NPI (1154373918) is active in the NPPES registry as of the last update on 2014-10-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.