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

Dr. Mark A. Siemer, DO

Individual provider Family Medicine Physician · NPI 1871649368

Dr. Mark A. Siemer, DO is a Family Practice in Colorado Springs, Colorado. Graduated from Nova Southeastern College of Osteo Medicine in 1994, 32 years ago. Practices with Catholic Health Initiatives Colorado, a 1,266-clinician group, works from 9 locations and accepts Medicare assignment. Licensed in Colorado and North Carolina.

Years since qualifying
32
Trained at
Nova Southeastern College of Osteo Medicine
Licensed in
CO, NC
In the registry since
2007
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

13445 Voyager Pkwy
Colorado Springs, CO 80921-7648
Phone: (719) 365-3220
Fax: (719) 365-7681
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (8)

  • 4707 S Helena Way, Aurora, CO 80015 — (720) 326-5032
  • 4707 S Helena Way, Aurora, CO 80015 — (720) 326-5032
  • 13445 Voyager Pkwy, Colorado Springs, CO 80921-7648 — (719) 365-3220
  • 265 Tanglewood Ln, Silverthorne, CO 80498-5314 — (970) 468-1003
  • 8420 University Exec Park Dr Ste 850, Charlotte, NC 28262 — (704) 316-1750
  • 8420 University Exec Park Dr Ste 850, Charlotte, NC 28262 — (704) 316-1750
  • 8420 University Exec Park Dr Ste 850, Charlotte, NC 28262 — (704) 316-1750
  • 130 Plantation Ridge Dr Ste 100, Mooresville, NC 28117-9239 — (704) 316-1635

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence DR.0034732 (CO)
Family Medicine Physician Taxonomy 207Q00000X · Licence 2005-00115 (NC)

Record details

NPI number1871649368
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedJanuary 26, 2007
Last updated in NPPESOctober 30, 2025
Certification dateOctober 30, 2025

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolNOVA SOUTHEASTERN COLLEGE OF OSTEO MEDICINE
Graduated 1994 (32 years in practice)
Group practice Catholic Health Initiatives Colorado — 1266 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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