Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Mark Kenneth Huntington Sr., MD, PHD

Individual provider Family Medicine Physician · NPI 1326007469

Dr. Mark Kenneth Huntington Sr., MD, PHD is registered under Family Practice in Sioux Falls, South Dakota. Graduated from Michigan State University College of Human Medicine in 1995, 31 years ago. Practices with Center for Family Medicine, a 16-clinician group and accepts Medicare assignment. Licensed in Minnesota.

Years since qualifying
31
Trained at
Michigan State University College of Human Medicine
Licensed in
MN
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

1115 E 20th St
Sioux Falls, SD 57105-1013 Not confirmed with CMS for 18 years — call before visiting
Phone: (605) 339-1783
Fax: (605) 367-7157
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 40960 (MN)

Record details

NPI number1326007469
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedMarch 18, 2006
Last updated in NPPESOctober 23, 2007

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolMICHIGAN STATE UNIVERSITY COLLEGE OF HUMAN MEDICINE
Graduated 1995 (31 years in practice)
Group practice Center For Family Medicine — 16 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.

Skin biopsy 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 patients109
Services billed 570 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

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.

  • Sanford Usd Medical Center Hospital · Sioux Falls, SD · listed as Sanford Medical Center Pharmacy
  • Avera @ Home Home health agency · Sioux Falls, SD · listed as Avera at Home
  • Avera McKennan Hospital & University Health Center Hospital · Sioux Falls, SD
  • Aveanna Home Health Home health agency · Sioux Falls, SD

Colleagues at Center for Family Medicine

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 16 clinicians in the practice; 12 are shown here.

Other providers in Sioux Falls