William Thieman, M.D.
NPI 1588748842 · Family Medicine Physician · Fort Collins, CO
Enrolled with Medicare as Order and Referring Only - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Thieman, M.D. is a Family Medicine Physician provider in Fort Collins, CO (NPI 1588748842).
Provider details
- NPI number
- 1588748842
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- DR-19190 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
Mailing address
Registry dates
- Enumerated
- 2006-10-24
- Last updated
- 2007-11-08
Frequently asked questions
- What is William Thieman's NPI number?
- William Thieman's National Provider Identifier (NPI) is 1588748842, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Thieman's specialty?
- William Thieman is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Thieman located?
- William Thieman's practice location on file with NPPES is 1217 E Elizabeth St Ste 1, Fort Collins, CO 80524-4040.
- What is William Thieman's phone number?
- The practice phone number listed in the NPPES registry for William Thieman is (970) 484-7495.
- Does William Thieman accept Medicare?
- William Thieman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Thieman's NPI active?
- Yes — William Thieman's NPI (1588748842) is active in the NPPES registry as of the last update on 2007-11-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.