Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Peter R Siviski, M.D.

Surgery Physician in Lewiston, ME · enumerated 2006.

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

National Provider Identifier

1295757748

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Registry record

Entity type Individual (Type 1)

Name Peter R Siviski

Credential M.D.

Sex Male

Practice address Lewiston, ME, 04240

Phone (207) 784-2903

Enumeration date Jul 24, 2006

Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 012354 (ME) 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
4343739	Other	ME	AETNA-NON HMO
E004202	Other	ME	CHAMPUS
9254686	Other	ME	CIGNA
M9330	Other	ME	CIGNA HEALTHSOURCE
015534	Other	ME	ANTHEM BCBS
0498199	Other	ME	AETNA US HEALTHCARE
B86422	Other	ME	HARVARD PILGRIM

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 Peter Siviski's NPI record?

Cross-check NPI 1295757748 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1295757748 active?

Yes, as of the latest NPPES snapshot, NPI 1295757748 is active (record last updated 2007-07-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.