IndividualActive
William Grass, DDS
NPI 1124196225 · General Practice Dentistry · Amherst, MA
William Grass, DDS is a General Practice Dentistry provider in Amherst, MA (NPI 1124196225).
Provider details
- NPI number
- 1124196225
- Entity type
- Individual
- Primary specialty
- General Practice DentistryDental Providers
- Credential
- DDS
- Sex
- Male
- Sole proprietor
- No
- License
- 14821 (MA)
Specialties & taxonomies
Dental Providers
Profile Score
Detailed profile(90/100 index)
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
31 Hall Dr # B
Amherst, MA 01002-2751
Phone: (413) 253-9505
Fax: (413) 256-3188
Street-level locationGet directions
Mailing address
6 Executive Park Dr
Clifton Park, NY 12065-5601
Registry dates
- Enumerated
- 2006-11-30
- Last updated
- 2013-01-24
Frequently asked questions
- What is William Grass's NPI number?
- William Grass's National Provider Identifier (NPI) is 1124196225, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Grass's specialty?
- William Grass is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).
- Where is William Grass located?
- William Grass's practice location on file with NPPES is 31 Hall Dr # B, Amherst, MA 01002-2751.
- What is William Grass's phone number?
- The practice phone number listed in the NPPES registry for William Grass is (413) 253-9505.
- Is William Grass's NPI active?
- Yes — William Grass's NPI (1124196225) is active in the NPPES registry as of the last update on 2013-01-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.