Gregory Dennis Hollis
Physician Assistant · Boston, MA
Gregory Dennis Hollis is a physician assistant with a practice address in Boston, Massachusetts, and NPI 1174308126, issued on Aug 29, 2023. Check the license with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory Dennis Hollis
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 360 Huntington Ave, Boston, MA 02115
- Phone
- (617) 393-2000
- Enumerated
- Aug 29, 2023
- Record last updated
- Aug 29, 2023
- Medicare enrollment
- Enrolled (PECOS I20250205003876); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,713 in Massachusetts → Look up another NPI →
Also registered at 360 Huntington Ave
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Verify Gregory Dennis Hollis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 3 group practices
- Comprehensive Primary Care And Associates LLCRockville, MD
- Crescent Urgent Health Care Services, LLCSilver Spring, MD
- Unity Health Care Inc.Washington, DC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Dennis Hollis among 4,713 physician assistant records in Massachusetts
Gregory Dennis Hollis is one of 4,713 physician assistant records with a practice address in Massachusetts. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 75% of them.
- NPI issued2023 · 75% of these records are older, 17% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2024 · median 2019 among the 3,217 with a school on file
- Record last updated2023 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,660 physician assistant records list a practice address in Boston
They are 1,660 of the 41,865 NPPES records with a practice address in Boston, and 4,713 physician assistant records in Massachusetts.
All 4,713 in Massachusetts → Every provider in Boston → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Lara BenoBoston, MA 021151013982677
- Laura BondlowBoston, MA 021151003806571
- Kristin Boyt, PABoston, MA 021151225091358
- Jessica Britnell, MS, PA-CBoston, MA 021151255309183
- Kendra Church, MS PA CBoston, MA 021151043261381
- Michele Elms, PABoston, MA 021151821052671
- Andrea Gayle-Bennett, PABoston, MA 021151497728026
- Sherri Horonjeff, PABoston, MA 021151669444394
Common questions
What is Gregory Dennis Hollis's NPI number?
Gregory Dennis Hollis's National Provider Identifier (NPI) is 1174308126, issued on Aug 29, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Dennis Hollis located?
The NPPES record lists a practice address at 360 Huntington Ave, Boston, MA, 02115. Phone: (617) 393-2000. Providers update this record themselves, so call before visiting.
How can I verify Gregory Dennis Hollis's license?
Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.