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

Dr. Mark A Dittenbir, MD

Individual provider Vascular Surgery Physician · NPI 1942249727

Dr. Mark A Dittenbir, MD practises General Surgery in Kalamazoo, Michigan. Graduated from Michigan State University College of Human Medicine in 1984, 42 years ago. Practices with Lakeland Medical Practices, a 287-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
42
Trained at
Michigan State University College of Human Medicine
Licensed in
MI
In the registry since
2006
Specialties on file
2
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 M283A
Kalamazoo, MI 49007-5341
Phone: (269) 349-7696
Fax: (269) 488-8313
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 4301048692 (MI)
Vascular Surgery Physician Taxonomy 2086S0129X · Licence 4301048692 (MI)

Record details

NPI number1942249727
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 6, 2006
Last updated in NPPESMay 1, 2018

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolMICHIGAN STATE UNIVERSITY COLLEGE OF HUMAN MEDICINE
Graduated 1984 (42 years in practice)
Group practice Lakeland Medical Practices — 287 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 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.

Colonoscopy 1–10 times
Hernia repair - groin (open) 1–10 times
Upper gastrointestinal (GI) endoscopy for acid reflux 1–10 times

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 patients57
Services billed 139 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.

Practises at

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

Colleagues at Lakeland Medical Practices

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 287 clinicians in the practice; 12 are shown here.

Other providers in Kalamazoo