Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mark Andrew Kocab, MD

Individual provider Gastroenterology Physician · NPI 1942271606

Mark Andrew Kocab, MD practises Gastroenterology in Kalamazoo, Michigan. Qualified in 1993, 33 years ago. Practices with Wellmont Medical Associates Inc, a 435-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Florida, Michigan, Montana and Tennessee.

Years since qualifying
33
Licensed in
FL, MI, MT, TN
In the registry since
2006
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

601 John St Ste M-302
Kalamazoo, MI 49007-5357
Phone: (269) 349-2266
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 1 Medical Park Blvd, Bristol, TN 37620-7430 — (423) 844-1121
  • 130 W Ravine Rd, Kingsport, TN 37660-3837 — (423) 224-4000

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence ME0774610 (FL)
Gastroenterology Physician Taxonomy 207RG0100X · Licence 74150 (TN)
Gastroenterology Physician Taxonomy 207RG0100X · Licence 143712 (MT)
Gastroenterology Physician Taxonomy 207RG0100X · Licence 4301512571 (MI)

Record details

NPI number1942271606
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 31, 2006
Last updated in NPPESMay 8, 2025
Certification dateMay 8, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolOTHER
Graduated 1993 (33 years in practice)
Group practice Wellmont Medical Associates Inc — 435 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Upper gastrointestinal (GI) endoscopy for acid reflux 174 times · 88th percentile
Colonoscopy 53 times · 65th percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients550
Services billed 4,939 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $88 4 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Benefis Hospitals Inc Hospital · Great Falls, MT · listed as Benefis Hospitals, Inc
  • Bronson Methodist Hospital Hospital · Kalamazoo, MI
  • Kootenai Health Hospital · Coeur D'Alene, ID · listed as Kootenai Health, Inc
  • Wellmont Bristol Regional Medical Center Hospital · Bristol, TN
  • Wellmont Holston Valley Medical Center Hospital · Kingsport, TN

Colleagues at Wellmont Medical Associates Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 435 clinicians in the practice; 12 are shown here.

Other providers in Kalamazoo