Mark Grebener, LLC
NPI 1063697738 · Clinical Social Worker · Denver, CO
Mark Grebener, LLC is a Clinical Social Worker organization in Denver, CO (NPI 1063697738).
Provider details
- NPI number
- 1063697738
- Entity type
- Organization
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- Mark Grebener, Principal(303) 883-4808
- License
- LAC127 (CO)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
- Clinical Social Worker1041C0700X
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
18 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
- 2007-12-31
- Last updated
- 2007-12-31
Frequently asked questions
- What is Mark Grebener, LLC's NPI number?
- Mark Grebener, LLC's National Provider Identifier (NPI) is 1063697738, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mark Grebener, LLC?
- Mark Grebener, LLC is classified in the NPPES registry as Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mark Grebener, LLC located?
- Mark Grebener, LLC's practice location on file with NPPES is 7900 E Union Ave, Denver, CO 80237-2735.
- What is Mark Grebener, LLC's phone number?
- The practice phone number listed in the NPPES registry for Mark Grebener, LLC is (303) 883-4808.
- Who is the authorized official for Mark Grebener, LLC?
- The authorized official listed on Mark Grebener, LLC's NPPES record is Mark Grebener, Principal. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mark Grebener, LLC's NPI active?
- Yes — Mark Grebener, LLC's NPI (1063697738) is active in the NPPES registry as of the last update on 2007-12-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.