Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Garrett Christian Zella, MD

Pediatric Gastroenterology Physician in Worcester, MA · enumerated 2007.

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

National Provider Identifier

1164558805

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Garrett Christian Zella

Credential MD

Sex Male

Practice address 55 Lake Ave N, Worcester, MA, 01655

Phone (774) 441-8082

Fax (774) 441-8056

Enumeration date Feb 26, 2007

Last updated in NPPES Aug 17, 2022

Taxonomy & licenses

2080P0206X Pediatric Gastroenterology Physician Allopathic & Osteopathic Physicians · License 230232 (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
110078751A	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

Is NPI 1164558805 active?

Yes, as of the latest NPPES snapshot, NPI 1164558805 is active (record last updated 2022-08-17).

How do I verify Garrett Zella's NPI record?

Cross-check NPI 1164558805 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

James Liebmann Medical Oncology Physician · Worcester, MA NPI 1477556587 Daniel Han Radiation Oncology Physician · Worcester, MA NPI 1831192301 Frances Lagana Podiatrist · Worcester, MA NPI 1750385514 Seth Arum Endocrinology, Diabetes & Metabolism Physician · Worcester, MA NPI 1679578793 Yong Zhao Blood Banking & Transfusion Medicine Physician · Worcester, MA NPI 1366448813 Donna Russell Certified Registered Nurse Anesthetist · Worcester, MA NPI 1689672347 Bruce Simon Surgical Critical Care Physician · Worcester, MA NPI 1164420634 Richard Haas Endocrinology, Diabetes & Metabolism Physician · Worcester, MA NPI 1023017373

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-08-17.