Gregg A. Koldenhoven, MD
Orthopedic Surgery (CMS) · Longmont, CO
At a glance
1610 Dry Creek Dr, Longmont, CO 80503-6405
Published activity: Hip replacement · Knee replacement · Lower limb (leg) arthroscopy (minimally invasive joint repair). View counts and coverage
NPPES record updated Feb 5, 2026. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
1610 Dry Creek DrLongmont, CO 80503-6405
Additional reported practice locations
300 Exempla Cir Ste 200Lafayette, CO 800263391
Phone: 3037721600
Fax: 3037729317 13559 Huron St Ste 201
Westminster, CO 802341163
Phone: 3037721600
Fax: 3037729317
Education & affiliations
- Medical / professional school
- University Of Iowa, Rj & L Carver College Of Medicine
- Graduation year
- 1993
- CMS specialties
- Orthopedic Surgery
Practice groups
Reported hospital affiliations
- Centura Health-St Anthony North Health Campus Westminster, CO
- Good Samaritan Medical Center Llc Lafayette, CO
- Longmont United Hospital Longmont, CO
- Longs Peak Hospital Longmont, CO
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
| Procedure category | Published Medicare activity |
|---|---|
| Hip replacement | 1-10 |
| Knee replacement | 1-10 |
| Lower limb (leg) arthroscopy (minimally invasive joint repair) | 1-10 |
| Removal of tissue | 1-10 |
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $458.27 |
Reporting companies
| Company | Amount |
|---|---|
| DEPUY SYNTHES SALES INC. | $438.74 |
| STRYKER CORPORATION | $19.53 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Orthopedic Surgery (CMS)
- Taxonomy code
- 207XX0004X
- Enumeration date
- Jun 15, 2005
- Record updated
- Feb 5, 2026
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
207XS0114X
License reported: DR.0039636 CO
207X00000X
License reported: DR0039636 CO
207XX0004X · Primary
License reported: DR.0039636 CO
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
1610 Dry Creek DrLongmont, CO 80503-6405
- Phone
- (303) 772-1600
- Fax
- (970) 493-0521
Mailing address
2500 E PROSPECT RDFORT COLLINS, CO 805259718
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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