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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. RONALD JAMES ZEGERIUS MD
NPI 1629053368
Internal Medicine - Cardiovascular Disease in Kalamazoo, MI

Active since December 14, 2005PECOS Enrolled
69.6/100
CMS Quality Rating
601 JOHN ST, SUITE M230, KALAMAZOO, MI 49007(269) 345-9606(269) 373-7095 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Ronald James Zegerius Md NPPES

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

DR. RONALD JAMES ZEGERIUS MD (NPI 1629053368) is an individual cardiovascular disease provider in Kalamazoo, Michigan, licensed in Michigan (4301034102) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1629053368
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameDR. RONALD JAMES ZEGERIUSCredential: MD
Location Address601 JOHN ST, SUITE M230Kalamazoo, MI 49007-5341
Mailing Address601 John St, Suite M230Kalamazoo, MI 49007-5341 · (269) 345-9606 · Fax (269) 373-7095
Phone(269) 345-9606
Fax(269) 373-7095
Sole ProprietorNo
Enumeration DateDecember 14, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1629053368 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in MI · 4301034102
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
601 JOHN ST, Kalamazoo, MI 49007
Open in Google Maps ↗

Other Identifiers 1

Medicaid3520425MI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Care Network of Michigan, Blue Cross and Blue Shield of Texas, Blue Cross Blue Shield of Michigan Mutual Insurance Company and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Ronald James Zegerius Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 49007 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$126.15 typical visit price
range $54.34 – $166.68
Typical copayment $31.53 (range $13.58 – $41.67)
Most-billed visit code 99204
Established Patient
$68.07 typical visit price
range $17.09 – $135.40
Typical copayment $17.01 (range $4.27 – $33.85)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

69.6/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality88.86
Improvement Activities40
Cost19.09

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. AMANDA KEATING WALKER D.O.
Obstetrics & Gynecology
601 JOHN ST, SUITE N1200
KALAMAZOO, MI 49007
Kalamazoo County (269) 341-7979
ANDREW W. WALKER MD
Emergency Medicine
601 JOHN ST
KALAMAZOO, MI 49007
Kalamazoo County (847) 404-6853
JUSTINE MELODIE OUDSEMA PA-C
Physician Assistant
601 JOHN ST, BOX 74
KALAMAZOO, MI 49007
Kalamazoo County (269) 341-8481
OCHUKO ANDREW OGHOR CRNA
Nurse Anesthetist, Certified Registered
601 JOHN ST
KALAMAZOO, MI 49007
Kalamazoo County (239) 341-7654
MARK J TIESZEN MD
Internal Medicine (Critical Care Medicine)
601 JOHN ST, SUITE M-510
KALAMAZOO, MI 49007
Kalamazoo County (269) 341-7762
DR. ERIC S SHAY M.D.
Internal Medicine
601 JOHN ST, SUITE M-170
KALAMAZOO, MI 49007
Kalamazoo County (269) 381-5060
EVGENIIA MORLEY RD
Dietitian, Registered
601 JOHN ST
KALAMAROO, MI 49007
Kalamazoo County (269) 341-6615
SELECT HOSPITALISTS, PLLC
Internal Medicine
601 JOHN ST
KALAMAZOO, MI 49007
Kalamazoo County (269) 341-7100

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 Ronald Zegerius's NPI number?

The NPI number for Ronald Zegerius is 1629053368. It was assigned to this individual provider in the NPPES registry on December 14, 2005.

Where is Ronald Zegerius located?

Ronald Zegerius practices at 601 John St Suite M230, Kalamazoo, MI 49007. The listed phone number is (269) 345-9606.

What is Ronald Zegerius's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Ronald Zegerius enrolled in Medicare?

Yes. Ronald Zegerius is registered in the Medicare PECOS enrollment system.

What insurance does Ronald Zegerius accept?

Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, Blue Cross and Blue Shield of Texas, McLaren Health Plan Community and Priority Health list Ronald Zegerius as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Ronald Zegerius was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 days 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.