Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
James Ira Merlin, O.D.
Optometrist in Greenfield, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1972601912
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Registry record
Entity type Individual (Type 1)
Name James Ira Merlin
Credential O.D.
Sex Male
Practice address 329 Conway St, Greenfield, MA, 01301
Phone (413) 774-6301
Fax (413) 772-3395
Enumeration date Sep 21, 2006
Last updated in NPPES Mar 17, 2018
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 110016183A | Medicaid | MA | - |
| 3359 | Other | MA | MA STATE LICENSE |
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 is the NPI number for James Merlin?
The National Provider Identifier (NPI) for James Merlin is 1972601912, a Type 1 (individual) record in the CMS NPPES registry.
Where does James Merlin practice?
The practice location on file with NPPES is in Greenfield, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Mark Allen Family Medicine Physician · Greenfield, MA NPI 1285633198 Paul Carlan Internal Medicine Physician · Greenfield, MA NPI 1770582603 Marguerite Gump Family Medicine Physician · Greenfield, MA NPI 1982604328 Jeffrey Palmer Family Medicine Physician · Greenfield, MA NPI 1255331336 Richard Brown Rheumatology Physician · Greenfield, MA NPI 1689657231 Georgia Weeber Podiatrist · Greenfield, MA NPI 1447220645 Patricia Iverson Family Medicine Physician · Greenfield, MA NPI 1063484038 Jessica Biggie Family Medicine Physician · Greenfield, MA NPI 1689649584
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-17.