Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Diane R. Amsterdam, MD
Obstetrics & Gynecology Physician in Hadley, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1093784340
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 04-3194547 | Other | MA | NORTHEAST HEALTH DIRECT |
| 052989 | Other | MA | TUFTS |
| 04-3194547 | Other | MA | NORTH AMERICAN PREFERRED |
| 160053989 | Other | MA | MEDICARE RAILROAD |
| 2329163 | Other | MA | US HEALTHCARE |
| 8151907003 | Other | MA | CIGNA |
| 04-3194547 | Other | MA | NORTHEAST HEALTHCARE ALLI |
| 2631116 | Other | MA | AETNA |
| 04-3194547 | Other | MA | GREAT-WEST |
| 8151907003 | Other | MA | PRUCARE |
| 131144 | Other | MA | HARVARD PILGRIM |
| 6178545 | Medicaid | MA | - |
| 000000020368 | Other | MA | BMC |
| 04-3194547 | Other | MA | PLAN VISTA |
| 052989 | Other | MA | CONNECTICARE |
| J03309 | Other | MA | BCBSMA |
| 04-3194547 | Other | MA | PHCS |
| 24236 | Other | MA | HNE |
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
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Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-04-05.