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

Dr. Matthew Karulf, MD

Individual provider Pulmonary Disease Physician · NPI 1912109083

Dr. Matthew Karulf, MD is registered under Pulmonary Disease in Grand Rapids, Michigan. Graduated from University of Colorado School of Medicine, Denver in 2001, 25 years ago. Practices with Dlp Marquette Physician Practices Inc, a 190-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Oregon.

Years since qualifying
25
Trained at
University of Colorado School of Medicine, Denver
Licensed in
OR
In the registry since
2007
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

4100 Lake Dr SE Ste 200
Grand Rapids, MI 49546-8292
Phone: (616) 267-8244
Fax: (616) 949-7272
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence MD27862 (OR)

Record details

NPI number1912109083
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 1, 2007
Last updated in NPPESJuly 8, 2022
Certification dateJuly 8, 2022

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Medical schoolUNIVERSITY OF COLORADO SCHOOL OF MEDICINE, DENVER
Graduated 2001 (25 years in practice)
Group practice Dlp Marquette Physician Practices Inc — 190 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 patients304
Services billed 1,080 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

Education $625 1 payment · educational material or training, not a fee
Food and Beverage $137 9 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.

  • Bell Hospital Hospital · Ishpeming, MI · listed as Bell Memorial Hospital
  • Uphs Marquette Dlp Hospital Hospital · Marquette, MI · listed as Dlp Marquette General Hospital LLC
  • Dickinson County Memorial Hospital Hospital · Iron Mountain, MI
  • Osf St Francis Hospital And Medical Group Hospital · Escanaba, MI
  • Up Health System Portage Hospital · Hancock, MI

Colleagues at Dlp Marquette Physician Practices Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 190 clinicians in the practice; 12 are shown here.

Other providers in Grand Rapids