Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ralph R Sisson, MD

Anesthesiology Physician in Bethlehem, PA · enumerated 2006.

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

National Provider Identifier

1730138421

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Registry record

Entity type Individual (Type 1)

Name Ralph R Sisson

Credential MD

Sex Male

Practice address 801 Ostrum St, Bethlehem, PA, 18015

Phone (610) 954-5810

Fax (610) 954-5480

Enumeration date May 9, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 038762E (PA) Primary

MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 1730138421 active?

Yes — as of the latest NPPES snapshot, NPI 1730138421 is active (record last updated 2007-07-08).

How do I verify Ralph Sisson's NPI record?

Cross-check NPI 1730138421 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 2007-07-08.