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Mark Wessling, MD
NPI 1265549125 · Pediatrics Physician · Oconomowoc, WI
Mark Wessling, MD is a Pediatrics Physician provider in Oconomowoc, WI (NPI 1265549125).
Provider details
- NPI number
- 1265549125
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 23299 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
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
915 Summit Ave
Oconomowoc, WI 53066-3994
Phone: (262) 569-2300
Fax: (262) 569-2266
Street-level locationGet directions
Mailing address
3301 W Forest Home Ave
Milwaukee, WI 53215-2843
Registry dates
- Enumerated
- 2006-08-24
- Last updated
- 2023-03-07
Frequently asked questions
- What is Mark Wessling's NPI number?
- Mark Wessling's National Provider Identifier (NPI) is 1265549125, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Wessling's specialty?
- Mark Wessling is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Wessling located?
- Mark Wessling's practice location on file with NPPES is 915 Summit Ave, Oconomowoc, WI 53066-3994.
- What is Mark Wessling's phone number?
- The practice phone number listed in the NPPES registry for Mark Wessling is (262) 569-2300.
- Is Mark Wessling's NPI active?
- Yes — Mark Wessling's NPI (1265549125) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.