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

David Gordon Affleck, MD

Individual provider Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · NPI 1710979653

David Gordon Affleck, MD practises Cardiac Surgery in Bismarck, North Dakota. Graduated from University of Utah School of Medicine in 1996, 30 years ago. Practices with Mountainstar Cardiovascular Services LLC, a 14-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in North Dakota and Utah.

Years since qualifying
30
Trained at
University of Utah School of Medicine
Licensed in
ND, UT
In the registry since
2005
Specialties on file
3
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

222 N 7th St
Bismarck, ND 58501-4436
Phone: (701) 323-6000
Fax: (701) 323-6249
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 300 N 7th St, Bismarck, ND 58501-4439 — (701) 323-6000
  • 1160 E 3900 S, Salt Lake City, UT 84124-1202 — (801) 743-4750

Specialties & licences

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (primary) Taxonomy 208G00000X · Licence 24469 (ND)
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Taxonomy 208G00000X · Licence 3461201205 (UT)
Vascular Surgery Physician Taxonomy 2086S0129X · Licence 346120-1206 (UT)

Record details

NPI number1710979653
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 17, 2005
Last updated in NPPESMay 22, 2026
Certification dateMay 22, 2026

Medicare enrollment

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

Medicare specialtyCARDIAC SURGERY
Also practisesTHORACIC SURGERY
Medical schoolUNIVERSITY OF UTAH SCHOOL OF MEDICINE
Graduated 1996 (30 years in practice)
Group practice Mountainstar Cardiovascular Services Llc — 14 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.

Coronary artery bypass graft (CABG) 11 times · 43rd percentile
Pacemaker insertion or repair 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 patients66
Services billed 166 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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.

Travel and Lodging $1,034 3 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $593 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.

  • Ogden Regional Medical Center Hospital · Ogden, UT · listed as Mountainstar Medical Group-Ogden Regional Medical Center, LLC
  • Applegate Homecare Home health agency · South Ogden, UT · listed as Applegate Homecare & Hospice, LLC
  • True North Home Health Home health agency · South Salt Lake, UT · listed as True North Home Health and Hospice LLC
  • Lakeview Hospital Hospital · Bountiful, UT
  • St Mark'S Hospital Hospital · Salt Lake City, UT
  • Ability Home Health Home health agency · South Jordan, UT

Colleagues at Mountainstar Cardiovascular Services LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 14 clinicians in the practice; 12 are shown here.

Other providers in Bismarck