Stanley Siefer, M.D.
NPI 1063490159 · Emergency Medicine Physician · Englewood, CO
Stanley Siefer, M.D. is a Emergency Medicine Physician provider in Englewood, CO (NPI 1063490159).
Provider details
- NPI number
- 1063490159
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 17908 (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
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
Mailing address
Registry dates
- Enumerated
- 2006-01-09
- Last updated
- 2023-05-14
- Certified
- 2023-05-14
Frequently asked questions
- What is Stanley Siefer's NPI number?
- Stanley Siefer's National Provider Identifier (NPI) is 1063490159, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stanley Siefer's specialty?
- Stanley Siefer is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stanley Siefer located?
- Stanley Siefer's practice location on file with NPPES is 901 W Hampden Ave, Englewood, CO 80110-7331.
- What is Stanley Siefer's phone number?
- The practice phone number listed in the NPPES registry for Stanley Siefer is (303) 761-1699.
- Is Stanley Siefer's NPI active?
- Yes — Stanley Siefer's NPI (1063490159) is active in the NPPES registry as of the last update on 2023-05-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.