Dr. Benjamin C. Dorenkamp, DO
Spine Surgery (Orthopaedic Surgery of the Spine Physician)
- Medicare participating
At a glance
- Medical school
- Midwestern University, Chicago College of Osteopathic Med (2015)
- Years since graduation
- 11
- In the NPI registry since
- 2015
- Medicare patients seen, 2024
- 274
Licensed in Colorado since 2020, according to the Colorado Department of Regulatory Agencies. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is
Education and training
- 2015Medical school: Midwestern University, Chicago College of Osteopathic Med
- 2015Registered with an NPI (national billing number; not a license date)
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Orthopaedic Surgery of the Spine Physician primary
CO license DR.0064004 (first issued 2020; expired) · CO license 64004 (first issued 2020; expired) -
Orthopaedic Surgery Physician
CO license DR.0064004 (first issued 2020; expired) - Student in an Organized Health Care Education/Training Program
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Edward W Sparrow Hospital Lansing, MI
- Mclaren Greater Lansing Lansing, MI
- Memorial Healthcare Owosso, MI
- University of Michigan Health - Sparrow Eaton Charlotte, MI
Medical groups
- Michigan Orthopedic Center P C (31 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 274
- Services billed
- 963
- Patients’ average age
- 72
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 30-39 minutes | 161 | 133 |
| X-ray of lower and sacral spine, minimum of 4 views | 125 | 123 |
| Established patient office or other outpatient visit, 20-29 minutes | 120 | 92 |
| X-ray of lower and sacral spine, 2-3 views | 109 | 63 |
| New patient office or other outpatient visit, 45-59 minutes | 87 | 87 |
| X-ray of middle spine, 2 views | 69 | 44 |
| X-ray of upper spine, 4-5 views | 58 | 58 |
| Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 46 | 12 |
| Insertion of spinal neurostimulator generator or receiver | 23 | 23 |
| X-ray of upper spine, 2-3 views | 22 | 12 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 8 companies reported 27 payments worth $830 in total to this clinician.
| DePuy Synthes Sales Inc. | $289 |
|---|---|
| Boston Scientific Corporation | $169 |
| Arthrex, Inc. | $145 |
| Smith+nephew, Inc. | $82.20 |
| Globus Medical, Inc. | $51.31 |
| Stryker Corporation | $48.29 |
| Zak Ortho | $33.39 |
| Orthofix Medical, Inc. | $11.84 |
| Food and Beverage | $830 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.
Industry-funded research
Named as a principal investigator on 1 industry-funded study in 2025, from 1 company. The companies reported $2,005 in research payments for these studies, mostly to the institutions running them.
- Patient Retrospective Outcomes (PRO)
Boston Scientific Corporation · Recruiting · NCT01550575
From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.