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Marc Tanenbaum, M. D.
NPI 1891736658 · Family Medicine Physician · Longmont, CO
Marc Tanenbaum, M. D. is a Family Medicine Physician provider in Longmont, CO (NPI 1891736658).
Provider details
- NPI number
- 1891736658
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M. D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 18430 (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
1350 Stuart St
Longmont, CO 80501-3156
Phone: (303) 776-7300
Fax: (303) 776-7308
Street-level locationGet directions
Mailing address
1350 Stuart St
Longmont, CO 80501-3156
Registry dates
- Enumerated
- 2006-06-10
- Last updated
- 2010-10-13
Frequently asked questions
- What is Marc Tanenbaum's NPI number?
- Marc Tanenbaum's National Provider Identifier (NPI) is 1891736658, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Tanenbaum's specialty?
- Marc Tanenbaum is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marc Tanenbaum located?
- Marc Tanenbaum's practice location on file with NPPES is 1350 Stuart St, Longmont, CO 80501-3156.
- What is Marc Tanenbaum's phone number?
- The practice phone number listed in the NPPES registry for Marc Tanenbaum is (303) 776-7300.
- Is Marc Tanenbaum's NPI active?
- Yes — Marc Tanenbaum's NPI (1891736658) is active in the NPPES registry as of the last update on 2010-10-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.