Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John A Geary, PA
Physician Assistant in Milton, MA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1609861194
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Registry record
Entity type Individual (Type 1)
Name John A Geary
Credential PA
Sex Male
Practice address 100 Highland St, Ste 125, Milton, MA, 02186
Phone (617) 696-4600
Enumeration date Sep 12, 2005
Last updated in NPPES Jan 16, 2013
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 648 (ME) Primary
PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program.
About the PA credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What specialty is John Geary?
John Geary is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Roy Tarr Podiatrist · Milton, MA NPI 1558364182 Gregory Kechejian Surgery Physician · Milton, MA NPI 1942202502 Gregory Mccormick Medical Physician Assistant · Milton, MA NPI 1801898390 Michele Chabot Internal Medicine Physician · Milton, MA NPI 1629062781 George L Barrett, M.D., P.C. Specialist · Milton, MA NPI 1881689859 John Ferrante Internal Medicine Physician · Milton, MA NPI 1649269523 Diane Perino Surgical Physician Assistant · Milton, MA NPI 1811988843 Amitabha Ghosh Roy Surgery Physician · Milton, MA NPI 1598743742
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-16.