John Siegert, M.D.
NPI 1013989185 · Orthopaedic Hand Surgery Physician · Mequon, WI
John Siegert, M.D. is a Orthopaedic Hand Surgery Physician provider in Mequon, WI (NPI 1013989185).
Provider details
- NPI number
- 1013989185
- Entity type
- Individual
- Primary specialty
- Orthopaedic Hand Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- 29031 (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
- 2006-02-03
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Siegert's NPI number?
- John Siegert's National Provider Identifier (NPI) is 1013989185, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Siegert's specialty?
- John Siegert is listed in the NPPES registry with a primary specialty of Orthopaedic Hand Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is John Siegert located?
- John Siegert's practice location on file with NPPES is 12300 N Port Washington Rd, Mequon, WI 53092-3339.
- What is John Siegert's phone number?
- The practice phone number listed in the NPPES registry for John Siegert is (262) 243-5400.
- Is John Siegert's NPI active?
- Yes — John Siegert's NPI (1013989185) 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.