Christopher Gerrior
Physician Assistant · South Boston, MA
Christopher Gerrior is a physician assistant with a practice address in South Boston, Massachusetts, and NPI 1073268389, issued on Feb 15, 2022. Check the license (Massachusetts PA9271, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Christopher Gerrior
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA9271 MA
Self-reported in NPPES; status is on the state search - Practice location
- 590 E 5TH St, South Boston, MA 02127
- Phone
- (978) 806-5321
- Enumerated
- Feb 15, 2022
- Record last updated
- Aug 5, 2026
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,713 in Massachusetts → Look up another NPI →
Verify Christopher Gerrior in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license PA9271Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average physician assistant in 2024
60 Medicare Part D claims for 52 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Cephalexin12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Christopher Gerrior among 4,713 physician assistant records in Massachusetts
Christopher Gerrior 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 2022, is newer than 68% of them.
- NPI issued2022 · 68% of these records are older, 25% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2026 · 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).
2 physician assistant records list a practice address in South Boston
They are 2 of the 224 NPPES records with a practice address in South Boston, and 4,713 physician assistant records in Massachusetts.
All 4,713 in Massachusetts → Every provider in South Boston → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Daniel EvansBoston, MA 021271023667433
- Lisa Ferazzoli, RPA-CBoston, MA 021271104070911
- Madison O'Connor, PA-CBoston, MA 021271669308359
- Rebecca RejtoSouth Boston, MA 021271538723820
- Kimberly Rivera, PA-CBoston, MA 021271437709458
- Piper SkinnerBoston, MA 021271083364566
- Melissa Thomas, PA-CBoston, MA 021271730739756
- Karen Chun, PA-C, MPHEast Boston, MA 021281609851484
Common questions
What is Christopher Gerrior's NPI number?
Christopher Gerrior's National Provider Identifier (NPI) is 1073268389, issued on Feb 15, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Christopher Gerrior located?
The NPPES record lists a practice address at 590 E 5TH St, South Boston, MA, 02127. Phone: (978) 806-5321. Providers update this record themselves, so call before visiting.
How can I verify Christopher Gerrior's license?
NPPES lists Massachusetts license number PA9271, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Christopher Gerrior prescribe under Medicare Part D?
In 2024, Christopher Gerrior had 60 Medicare Part D claims for 52 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions 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.