Gregory Hollis
NPI 1174308126 · Physician Assistant · Boston, MA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Hollis is a Physician Assistant provider in Boston, MA (NPI 1174308126).
Provider details
- NPI number
- 1174308126
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2023-08-29
- Last updated
- 2023-08-29
- Certified
- 2023-08-29
Frequently asked questions
- What is Gregory Hollis's NPI number?
- Gregory Hollis's National Provider Identifier (NPI) is 1174308126, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Hollis's specialty?
- Gregory Hollis is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Gregory Hollis located?
- Gregory Hollis's practice location on file with NPPES is 360 Huntington Ave, Boston, MA 02115-5005.
- What is Gregory Hollis's phone number?
- The practice phone number listed in the NPPES registry for Gregory Hollis is (617) 393-2000.
- Does Gregory Hollis accept Medicare?
- Gregory Hollis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Hollis's NPI active?
- Yes — Gregory Hollis's NPI (1174308126) is active in the NPPES registry as of the last update on 2023-08-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.