Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ronald J Sunog, M.D.

Pediatrics Physician in Great Barrington, MA · enumerated 2006.

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

National Provider Identifier

1346273646

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Registry record

Entity type Individual (Type 1)

Name Ronald J Sunog

Credential M.D.

Sex Male

Practice address 100 Maple Ave, Great Barrington, MA, 01230

Phone (508) 584-1890

Fax (508) 894-0412

Enumeration date Jul 9, 2006

Last updated in NPPES Mar 22, 2024

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 54267 (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
3071359	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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Ronald Sunog's NPI record?

Cross-check NPI 1346273646 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1346273646 active?

Yes, as of the latest NPPES snapshot, NPI 1346273646 is active (record last updated 2024-03-22).

Other providers at this practice address

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Ruby Chang Pediatrics Physician · Great Barrington, MA NPI 1043279094 Lisa Sylvia Pediatrics Physician · Great Barrington, MA NPI 1639127749

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-22.