Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Zawatski, M.D.

Pediatrics Physician in Auburn, MA · enumerated 2009.

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

National Provider Identifier

1609004266

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Registry record

Entity type Individual (Type 1)

Name William Zawatski

Credential M.D.

Sex Male

Practice address 105 Millbury St, Auburn, MA, 01501

Phone (508) 832-9691

Enumeration date Jun 23, 2009

Last updated in NPPES Jul 18, 2013

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 240435 (MA) 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

What specialty is William Zawatski?

William Zawatski is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Sara Jacobson Pediatrics Physician · Auburn, MA NPI 1861450785 Jaimie Kane Pediatrics Physician · Auburn, MA NPI 1720035280 Nancy Detora Pediatrics Physician · Auburn, MA NPI 1689773095 Mary Wilke Pediatric Nurse Practitioner · Auburn, MA NPI 1669572699 Maureen Lundin Pediatric Nurse Practitioner · Auburn, MA NPI 1558461665 Joanne Piecka Pediatric Nurse Practitioner · Auburn, MA NPI 1093816142 Clare Breen Pediatric Nurse Practitioner · Auburn, MA NPI 1689775728 Cheryl Bessom Physician Assistant · Auburn, MA NPI 1548344559

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-07-18.