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Marc Shiffman, MD
NPI 1639171440 · Internal Medicine Physician · Frisco, CO
Marc Shiffman, MD is a Internal Medicine Physician provider in Frisco, CO (NPI 1639171440).
Provider details
- NPI number
- 1639171440
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 41574 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
730 Summit Blvd
101
Frisco, CO 80443
Phone: (970) 668-3911
Fax: (970) 668-5650
Street-level locationGet directions
Mailing address
Po Box 4009
Frisco, CO 80443-4009
Registry dates
- Enumerated
- 2005-08-11
- Last updated
- 2007-11-13
Frequently asked questions
- What is Marc Shiffman's NPI number?
- Marc Shiffman's National Provider Identifier (NPI) is 1639171440, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Shiffman's specialty?
- Marc Shiffman is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marc Shiffman located?
- Marc Shiffman's practice location on file with NPPES is 730 Summit Blvd, Frisco, CO 80443.
- What is Marc Shiffman's phone number?
- The practice phone number listed in the NPPES registry for Marc Shiffman is (970) 668-3911.
- Is Marc Shiffman's NPI active?
- Yes — Marc Shiffman's NPI (1639171440) is active in the NPPES registry as of the last update on 2007-11-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.