Gregory Seibert, PHD
NPI 1871194399 · Marriage & Family Therapist · Denver, CO
Gregory Seibert, PHD is a Marriage & Family Therapist provider in Denver, CO (NPI 1871194399).
Provider details
- NPI number
- 1871194399
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- No
- License
- MFT.0001847 (CO)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 2002 Battlecreek Dr Apt 8201Fort Collins, CO 80528Phone: (720) 235-8119
Registry dates
- Enumerated
- 2020-11-02
- Last updated
- 2020-12-28
- Certified
- 2020-12-28
Frequently asked questions
- What is Gregory Seibert's NPI number?
- Gregory Seibert's National Provider Identifier (NPI) is 1871194399, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Seibert's specialty?
- Gregory Seibert is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Gregory Seibert located?
- Gregory Seibert's practice location on file with NPPES is 7535 E Hampden Ave Ste 508, Denver, CO 80231-4843.
- What is Gregory Seibert's phone number?
- The practice phone number listed in the NPPES registry for Gregory Seibert is (720) 621-7908.
- Is Gregory Seibert's NPI active?
- Yes — Gregory Seibert's NPI (1871194399) is active in the NPPES registry as of the last update on 2020-12-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.