Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Riwa Sabbagh

Reproductive Endocrinology Physician in Waltham, MA · enumerated 2017.

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

National Provider Identifier

1831621085

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Registry record

Entity type Individual (Type 1)

Name Dr. Riwa Sabbagh

Sex Female

Practice address 130 Second Ave, Waltham, MA, 02451

Phone (781) 434-6500

Enumeration date Mar 28, 2017

Last updated in NPPES Jun 27, 2024

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

207VE0102X Reproductive Endocrinology Physician Allopathic & Osteopathic Physicians · License 286611 (MA) Primary

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 NPI 1831621085 active?

Yes, as of the latest NPPES snapshot, NPI 1831621085 is active (record last updated 2024-06-27).

How do I verify Riwa Sabbagh's NPI record?

Cross-check NPI 1831621085 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-27.