Mark Lallas, D.D.S.
NPI 1427275973 · General Practice Dentistry · Arlington Heights, IL
Enrolled with Medicare as Order and Referring Only - Oral Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Lallas, D.D.S. is a General Practice Dentistry provider in Arlington Heights, IL (NPI 1427275973).
Provider details
- NPI number
- 1427275973
- Entity type
- Individual
- Primary specialty
- General Practice DentistryDental Providers
- Credential
- D.D.S.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 019-022291 (IL)
Specialties & taxonomies
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
- 2007-04-19
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Lallas's NPI number?
- Mark Lallas's National Provider Identifier (NPI) is 1427275973, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Lallas's specialty?
- Mark Lallas is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).
- Where is Mark Lallas located?
- Mark Lallas's practice location on file with NPPES is 120 W Eastman St, Arlington Heights, IL 60004-5937.
- What is Mark Lallas's phone number?
- The practice phone number listed in the NPPES registry for Mark Lallas is (847) 253-7477.
- Does Mark Lallas accept Medicare?
- Mark Lallas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Lallas's NPI active?
- Yes — Mark Lallas's NPI (1427275973) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.