Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Jonathan A Finkelstein, M.D.
Pediatrics Physician in Boston, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1366420143
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Registry record
Entity type Individual (Type 1)
Name Jonathan A Finkelstein
Credential M.D.
Sex Male
Practice address 165 Dartmouth St, Boston, MA, 02116
Phone (617) 859-5000
Fax (617) 859-5425
Enumeration date Jan 3, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0012280 | Other | MA | NEIGHBORHOOD HEALTH |
| 3122336 | Medicaid | MA | - |
| PP643 | Other | MA | HARVARD PILGRIM |
| 074138 | Other | MA | TUFTS |
| J30401 | Other | MA | BLUE CROSS |
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
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.
What specialty is Jonathan Finkelstein?
Jonathan Finkelstein is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Linda Cohen Pediatrics Physician · Boston, MA NPI 1144207887 Karen Klein Pediatrics Physician · Boston, MA NPI 1154309235 Richard Marshall Pediatrics Physician · Boston, MA NPI 1770562324 Moira Cunningham Internal Medicine Physician · Boston, MA NPI 1437120995 Shyla Shrinath Internal Medicine Physician · Boston, MA NPI 1568435576 Janice Micale Pediatric Nurse Practitioner · Boston, MA NPI 1053387555 Anne Krekis Family Nurse Practitioner · Boston, MA NPI 1184683997 Monica Gomez Internal Medicine Physician · Boston, MA NPI 1174585368
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.