Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Richard D Alexander, MD

Nephrology Physician in Salem, MA · enumerated 2006 · practices at Surgical Specialists of the North Shore,Inc.

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

National Provider Identifier

1831145580

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Registry record

Entity type Individual (Type 1)

Name Richard D Alexander

Credential MD

Sex Male

Practice address 331 Highland Ave, Salem, MA, 01970

Phone (978) 745-1200

Fax (978) 542-0351

Enumeration date May 25, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 37200 (MA) Secondary

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License 37200 (MA) 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
6169198	Medicaid	MA	-

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.

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Frequently asked questions

How do I verify Richard Alexander's NPI record?

Cross-check NPI 1831145580 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1831145580 active?

Yes, as of the latest NPPES snapshot, NPI 1831145580 is active (record last updated 2025-09-11).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.