Mark Lanser, MD
NPI 1275574592 · Neurology Physician · Janesville, WI
Mark Lanser, MD is a Neurology Physician provider in Janesville, WI (NPI 1275574592).
Provider details
- NPI number
- 1275574592
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 31143-020 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
- 2006-06-09
- Last updated
- 2012-05-15
Frequently asked questions
- What is Mark Lanser's NPI number?
- Mark Lanser's National Provider Identifier (NPI) is 1275574592, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Lanser's specialty?
- Mark Lanser is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Lanser located?
- Mark Lanser's practice location on file with NPPES is 3200 E Racine St, Janesville, WI 53546-2343.
- What is Mark Lanser's phone number?
- The practice phone number listed in the NPPES registry for Mark Lanser is (608) 371-8000.
- Is Mark Lanser's NPI active?
- Yes — Mark Lanser's NPI (1275574592) is active in the NPPES registry as of the last update on 2012-05-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.