Clifford Siegel, MD
NPI 1427143239 · Psychiatry Physician · Greenwood Village, CO
Clifford Siegel, MD is a Psychiatry Physician provider in Greenwood Village, CO (NPI 1427143239).
Provider details
- NPI number
- 1427143239
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 22035 (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
- 2006-10-04
- Last updated
- 2022-10-07
- Certified
- 2022-10-07
Frequently asked questions
- What is Clifford Siegel's NPI number?
- Clifford Siegel's National Provider Identifier (NPI) is 1427143239, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Clifford Siegel's specialty?
- Clifford Siegel is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Clifford Siegel located?
- Clifford Siegel's practice location on file with NPPES is 7000 E Belleview Ave Ste 203, Greenwood Village, CO 80111-1622.
- What is Clifford Siegel's phone number?
- The practice phone number listed in the NPPES registry for Clifford Siegel is (303) 671-8700.
- Is Clifford Siegel's NPI active?
- Yes — Clifford Siegel's NPI (1427143239) is active in the NPPES registry as of the last update on 2022-10-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.