Jim Mertz, MD
NPI 1003871443 · Nephrology Physician · Kansas City, MO
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jim Mertz, MD is a Nephrology Physician provider in Kansas City, MO (NPI 1003871443).
Provider details
- NPI number
- 1003871443
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- R5657 (MO)
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
- 2006-04-19
- Last updated
- 2012-12-12
Frequently asked questions
- What is Jim Mertz's NPI number?
- Jim Mertz's National Provider Identifier (NPI) is 1003871443, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jim Mertz's specialty?
- Jim Mertz is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Jim Mertz located?
- Jim Mertz's practice location on file with NPPES is 4320 Wornall Rd., Kansas City, MO 64111-3255.
- What is Jim Mertz's phone number?
- The practice phone number listed in the NPPES registry for Jim Mertz is (816) 531-0552.
- Does Jim Mertz accept Medicare?
- Jim Mertz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jim Mertz's NPI active?
- Yes — Jim Mertz's NPI (1003871443) is active in the NPPES registry as of the last update on 2012-12-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.