Mark W Niedfeldt, MD, LLC
NPI 1174764906 · Family Medicine Physician · Mequon, WI
Mark W Niedfeldt, MD, LLC is a Family Medicine Physician organization in Mequon, WI (NPI 1174764906).
Provider details
- NPI number
- 1174764906
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Mark Niedfeldt, Owner(262) 643-4720
- License
- 35201 (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
17 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
- 2009-03-06
- Last updated
- 2009-03-06
Frequently asked questions
- What is Mark W Niedfeldt, MD, LLC's NPI number?
- Mark W Niedfeldt, MD, LLC's National Provider Identifier (NPI) is 1174764906, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mark W Niedfeldt, MD, LLC?
- Mark W Niedfeldt, MD, LLC is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark W Niedfeldt, MD, LLC located?
- Mark W Niedfeldt, MD, LLC's practice location on file with NPPES is 10556 N Port Washington Rd, Mequon, WI 53092-5586.
- What is Mark W Niedfeldt, MD, LLC's phone number?
- The practice phone number listed in the NPPES registry for Mark W Niedfeldt, MD, LLC is (262) 643-4720.
- Who is the authorized official for Mark W Niedfeldt, MD, LLC?
- The authorized official listed on Mark W Niedfeldt, MD, LLC's NPPES record is Mark Niedfeldt, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mark W Niedfeldt, MD, LLC's NPI active?
- Yes — Mark W Niedfeldt, MD, LLC's NPI (1174764906) is active in the NPPES registry as of the last update on 2009-03-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.