Marsden Scott Blois IV, MD
Marsden Scott Blois IV, MD is registered under Cardiovascular Disease (Cardiology) in Boulder, Colorado. Graduated from Baylor College of Medicine in 1993, 33 years ago. Practices with Poudre Valley Medical Group LLC, a 2,416-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Colorado and Texas.
- Years since qualifying
- 33
- Trained at
- Baylor College of Medicine
- Licensed in
- CO, TX
- 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.
Practice location Address checks out
4743 Arapahoe Ave Ste 201Boulder, CO 80303-1113
Phone: (303) 442-2395
Fax: (303) 442-1073
Show map & directions
Directions in Google Maps · Apple Maps · OpenStreetMap
Pin is approximate — placed at the ZIP-code centre, not the exact door.
Additional practice locations (1)
- 1760 E Ken Pratt Blvd Ste 205, Longmont, CO 80504-5311 — (720) 718-8180
Specialties & licences
| Advanced Heart Failure and Transplant Cardiology Physician (primary) | Taxonomy 207RA0001X · Licence DR.0034464 (CO) |
|---|---|
| Cardiovascular Disease Physician | Taxonomy 207RC0000X · Licence DR.0034464 (CO) |
| Cardiovascular Disease Physician | Taxonomy 207RC0000X · Licence J7308 (TX) |
Record details
| NPI number | 1215938683 |
|---|---|
| Entity type | Individual (Type 1) |
| Gender | Male |
| Credentials | MD |
| Sole proprietor | No |
| NPI enumerated | August 9, 2005 |
| Last updated in NPPES | July 17, 2026 |
| Certification date | July 17, 2026 |
Medicare enrollment
| Medicare specialty | CARDIOVASCULAR DISEASE (CARDIOLOGY) |
|---|---|
| Also practises | ADVANCED HEART FAILURE AND TRANSPLANT CARDIOLOGY |
| Medical school | BAYLOR COLLEGE OF MEDICINE |
| Graduated | 1993 (33 years in practice) |
| Group practice | Poudre Valley Medical Group Llc — 2416 clinicians |
| Accepts Medicare assignment | Yes — accepts the Medicare-approved amount |
| Telehealth | Offers telehealth services |
Medicare patients and services, 2024
| Medicare patients | 1,021 |
|---|---|
| Services billed | 2,085 |
| Average patient age | 77 |
Payments from drug and device companies, 2025
| Food and Beverage | $165 |
|---|
Practises at
- Boulder Community Health Hospital · Boulder, CO
- Longs Peak Hospital Hospital · Longmont, CO
- Medical Center Of The Rockies Hospital · Loveland, CO
- Uchealth Greeley Hospital Hospital · Greeley, CO
- Poudre Valley Hospital Hospital · Fort Collins, CO
Colleagues at Poudre Valley Medical Group LLC
- Nancy Dubuisson Barker, MD Anesthesiology Physician · Lafayette, LA
- Mrs. Megan Jill Bookhout, PA Physician Assistant · Albuquerque, NM
- Alicia A Heuser, PA Medical Physician Assistant · Castle Rock, CO
- Brittany Lee Hucko, CRNA Registered Nurse · Pueblo, CO
- Dr. Matthew Kassel, DO Family Medicine Physician · Cheyenne, WY
- Jessica Dawn Klein, CNP Nurse Practitioner · Sioux Falls, SD
- Jenny Lee, MD Cardiovascular Disease Physician · Pueblo, CO
- Margaret Ruth Lesage, MD Family Medicine Physician · Windsor, CO
- William G Montross, DPM Podiatrist · Colorado Springs, CO
- Dr. Lisa My Nguyen, MD Family Medicine Physician · Broomfield, CO
- MS. Krista N O'Leary, CNM Advanced Practice Midwife · Greeley, CO
- Mrs. Michaela C. Romero, MSN, C-ANP Registered Nurse · Firestone, CO