NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Scott Robert Masterson, M.D.

Pain Medicine (Physical Medicine & Rehabilitation) Physician in Boston, MA · enumerated 2005.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1598751323

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Scott Robert Masterson
Credential M.D.
Sex Male
Practice address 55 Fruit St, Boston, MA, 02114
Phone (617) 726-2000
Enumeration date Sep 27, 2005
Last updated in NPPES Feb 24, 2025

Taxonomy & licenses

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License 8092 (NH) Secondary
208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License 70585 (MA) Secondary
2081P2900X Pain Medicine (Physical Medicine & Rehabilitation) Physician Allopathic & Osteopathic Physicians · License 70585 (MA) Secondary
2081P2900X Pain Medicine (Physical Medicine & Rehabilitation) Physician Allopathic & Osteopathic Physicians · License 8092 (NH) Primary
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
23-00008 Other MA UHC
0102646Y0MA01 Other NH ANTHEM
0003756 Other MA NHP
3052303 Medicaid MA -
23-00143 Other MA EVERCARE
715271 Other MA THP
J08600 Other MA BCBS
0035350-001 Other MA CIGNA
80317 Other MA HPHC
23592 Other MA FCHP
3003093 Medicaid NH -
4374984 Other MA AETNA

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.

Read the full guide → Validate an NPI →

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 Scott Masterson?
Scott Masterson is registered in NPPES with the primary taxonomy of Pain Medicine (Physical Medicine & Rehabilitation) 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 →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-02-24.