Keith Marks, D.C.
NPI 1619012333 · Chiropractor · Marathon, WI
Enrolled with Medicare as Practitioner - Chiropractic · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Keith Marks, D.C. is a Chiropractor provider in Marathon, WI (NPI 1619012333).
Provider details
- NPI number
- 1619012333
- Entity type
- Individual
- Primary specialty
- ChiropractorChiropractic Providers
- Credential
- D.C.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 3377 (WI)
Specialties & taxonomies
Chiropractic 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
- 2007-02-20
- Last updated
- 2011-11-16
Frequently asked questions
- What is Keith Marks's NPI number?
- Keith Marks's National Provider Identifier (NPI) is 1619012333, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Keith Marks's specialty?
- Keith Marks is listed in the NPPES registry with a primary specialty of Chiropractor (Chiropractic Providers).
- Where is Keith Marks located?
- Keith Marks's practice location on file with NPPES is 117 Main St, Marathon, WI 54448-9646.
- What is Keith Marks's phone number?
- The practice phone number listed in the NPPES registry for Keith Marks is (715) 443-6777.
- Does Keith Marks accept Medicare?
- Keith Marks is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Keith Marks's NPI active?
- Yes — Keith Marks's NPI (1619012333) is active in the NPPES registry as of the last update on 2011-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.