JIM I MERTZ MD
NPI 1003871443
Internal Medicine - Nephrology in Kansas City, MO

Q: What is Jim Mertz's NPI number?

The NPI number for Jim Mertz is 1003871443. It was assigned to this individual provider in the NPPES registry on April 19, 2006.

Q: What is Jim Mertz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Q: When was this NPI record last updated?

The NPPES record for Jim Mertz was last updated on December 12, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 19, 2006

4320 WORNALL RD., STE 208, KANSAS CITY, MO 64111(816) 531-0552(816) 756-2503 Get Directions Write a Review

NPPES record last updated: December 12, 2012. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Jim I Mertz Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JIM I MERTZ MD (NPI 1003871443) is an individual nephrology provider in Kansas City, Missouri, licensed in Missouri (R5657) and active in the NPI registry since April 2006.

NPPES Registry Identity

NPI1003871443

Entity TypeIndividualMale

Primary Taxonomy207RN0300X

Provider Legal NameJIM I MERTZCredential: MD

Location Address4320 WORNALL RD., STE 208Kansas City, MO 64111-3255

Mailing Address4320 Wornall Rd., Ste 208Kansas City, MO 64111-3255 · (816) 531-0552 · Fax (816) 756-2503

Phone(816) 531-0552

Fax(816) 756-2503

Sole ProprietorNo

Enumeration DateApril 19, 2006

Last NPPES UpdateDecember 12, 2012

✔ NPI 1003871443 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians

Taxonomy Code207RN0300X

License✔ Licensed in MO · R5657

Definition

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

4320 WORNALL RD., Kansas City, MO 64111

Open in Google Maps ↗

Other Identifiers 2

Medicare UPINC50795MO

Medicare ID-Type Unspecified2636125AMO · Medicare Number

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Jim I Mertz Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignment

Medicare enrollment records show Jim Mertz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Kansas City Kidney Consultants, PA

Same address

Nephrology

4320 WORNALL RD STE 208
Kansas City, MO 64111

Reassigned Medicare billing, Kansas enrollment
21 clinicians in this Medicare group

NPI 1164528626 (816) 531-0552

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Colorectal Cancer Screening

Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer

23%367 patients2/55-star benchmark: 85%

Pneumococcal Vaccination Status for Older Adults

Percentage of patients 65 years of age and older who have ever received a pneumococcal vaccine

91%387 patients5/55-star benchmark: 90%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Jim Mertz's NPI number?

The NPI number for Jim Mertz is 1003871443. It was assigned to this individual provider in the NPPES registry on April 19, 2006.

Where is Jim Mertz located?

Jim Mertz practices at 4320 Wornall Rd. Ste 208, Kansas City, MO 64111. The listed phone number is (816) 531-0552.

What is Jim Mertz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Jim Mertz enrolled in Medicare?

Yes. Jim Mertz is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Jim Mertz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jim Mertz reassigns Medicare benefits to Kansas City Kidney Consultants, PA (Kansas City, MO). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Jim Mertz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Jim Mertz was last updated on December 12, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.