MARSDEN S. BLOIS, IV MD – NPI #1215938683
Internal Medicine

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

Health Care Provider Taxonomy Code for Internal Medicine

MARSDEN BLOIS, IV is a physician located in BOULDER, CO. NPPES has assigned the NPI number 1215938683 to MARSDEN BLOIS, IV on August 09, 2005. It is a Type-1 NPI, indicating this NPI number is associated with an individual. He is also known by his other name SCOTT BLOIS, IV. With multiple taxonomy codes selected, the primary taxonomy selected by this provider is 207RC0000X from the Health Care Provider Taxonomy code set, which is classified as Internal Medicine, specializing in Cardiovascular Disease

The NPI profile was last updated on Feb 06, 2026. Use the NPI data found here to bill health insurance companies, identify providers enrolled in Medicare and Medicaid services or other HIPAA compliant transactions. See the complete NPI profile for MARSDEN BLOIS, IV below.

NPI Profile for
MARSDEN S. BLOIS, IV

NPI Number
1215938683
Enumeration Date

(about 21 years ago)
Entity Type
Type-1  Individual (Male)
Legal Name
MARSDEN S. BLOIS, IV
Other Name: SCOTT BLOIS, IV
Credentials
MD
Primary location
4743 ARAPAHOE AVE
STE 201
BOULDER, CO 80303-1113
Phone: (303) 442-2395 Fax: (303) 442-1073
1 Other location(s):
1760 E Ken Pratt Blvd Ste 205
Longmont, CO 80504-5311
Phone: (720) 718-8180
Fax: (720) 718-5989
Mailing address
1760 E KEN PRATT BLVD STE 205
LONGMONT, CO 80504-5311
Phone: (720) 718-8180 Fax: (720) 718-5989
Sole Proprietor
No
Updated
Certification Date
Feb 06, 2026

Note: NPPES allows providers to attest to the accuracy of their NPI data. When a provider request any change to the NPI record, they will be able to attest to their changed NPI data, resulting in an updated certification date.

Taxonomy Code(s)

A taxonomy code is a code that describes the health care service provider's type, classification, and the area of specialization. The primary specialty for this provider is indicated as (Primary) below.

Taxonomy Classification / Specialization State License
207RC0000X
- Internal Medicine / Cardiovascular Disease (Primary)		 CO DR.0034464
207RA0001X
- Internal Medicine / Advanced Heart Failure and Transplant Cardiology		 CO DR.0034464

The taxonomy codes are selected by the provider at the time of NPI registration. Selection of a taxonomy code does not replace any credentialing or validation process that the provider requesting the code should complete.

Additional Information

Education
BAYLOR COLLEGE OF MEDICINE - Graduated 1993
Offers Telehealth Services
Yes - Telehealth services allows you to talk to your health care provider using audio/video communications, such as Zoom, without actually going in to the doctor's office
Accepts Medicare
This provider accepts Medicare-approved amount as payment in full. The Medicare-approved amount is the total the provider can be paid. When a provider accepts the Medicare-approved amount as payment, you won't be billed for more than the Medicare deductible & coinsureance.
Medicare Ordering & Referring
Provider can:
  • Refer to Part B
  • Order Durable Medical Equipment
  • Refer to Home Health Agency
  • Order Power Mobility Devices
Affiliations
MARSDEN BLOIS, IV is affiliated with the following medical group(s):
  • HOSPITAL
    • BOULDER COMMUNITY HEALTH
      4747 ARAPAHOE AVE
      BOULDER, CO 80303

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