Donald Greengrass, SAC
NPI 1548571573 · Addiction (Substance Use Disorder) Counselor · Black River Falls, WI
Donald Greengrass, SAC is a Addiction (Substance Use Disorder) Counselor provider in Black River Falls, WI (NPI 1548571573).
Provider details
- NPI number
- 1548571573
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- SAC
- Sex
- Male
- Sole proprietor
- No
- License
- 15533-131 (WI)
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
16 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
- 2010-06-24
- Last updated
- 2010-06-24
Frequently asked questions
- What is Donald Greengrass's NPI number?
- Donald Greengrass's National Provider Identifier (NPI) is 1548571573, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Greengrass's specialty?
- Donald Greengrass is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Donald Greengrass located?
- Donald Greengrass's practice location on file with NPPES is N6520 Guy Rd, Black River Falls, WI 54615-5405.
- What is Donald Greengrass's phone number?
- The practice phone number listed in the NPPES registry for Donald Greengrass is (715) 284-9851.
- Is Donald Greengrass's NPI active?
- Yes — Donald Greengrass's NPI (1548571573) is active in the NPPES registry as of the last update on 2010-06-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.