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

Dr. Gregg A. Koldenhoven, MD

Individual provider Adult Reconstructive Orthopaedic Surgery Physician · NPI 1396740411

Dr. Gregg A. Koldenhoven, MD is an Orthopedic Surgery in Longmont, Colorado. Graduated from University of Iowa, Rj & L Carver College of Medicine in 1993, 33 years ago. Practices with Orthopaedic and Spine Center of the Rockies PC, a 146-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Colorado.

Years since qualifying
33
Trained at
University of Iowa, Rj & L Carver College of Medicine
Licensed in
CO
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.

See every abbreviation used in this directory →

Practice location Address checks out

1610 Dry Creek Dr
Longmont, CO 80503-6405
Phone: (303) 772-1600
Fax: (970) 493-0521
Show map & directions

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

Additional practice locations (2)

  • 300 Exempla Cir Ste 200, Lafayette, CO 80026-3391 — (303) 772-1600
  • 13559 Huron St Ste 201, Westminster, CO 80234-1163 — (303) 772-1600

Specialties & licences

Orthopaedic Foot and Ankle Surgery Physician (primary) Taxonomy 207XX0004X · Licence DR.0039636 (CO)
Adult Reconstructive Orthopaedic Surgery Physician Taxonomy 207XS0114X · Licence DR.0039636 (CO)
Orthopaedic Surgery Physician Taxonomy 207X00000X · Licence DR0039636 (CO)

Record details

NPI number1396740411
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 15, 2005
Last updated in NPPESFebruary 5, 2026
Certification dateFebruary 5, 2026

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolUNIVERSITY OF IOWA, RJ & L CARVER COLLEGE OF MEDICINE
Graduated 1993 (33 years in practice)
Group practice Orthopaedic And Spine Center Of The Rockies Pc — 146 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare