Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Christopher Thomas Erb, MD PHD

Hospitalist Physician in New Haven, CT · enumerated 2008.

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

National Provider Identifier

1538321138

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Registry record

Entity type Individual (Type 1)

Name Dr. Christopher Thomas Erb

Credential MD PHD

Sex Male

Practice address 20 York Street, Cb-2041, Yale-New Haven Hospital, New Haven, CT, 06510

Phone (203) 688-4748

Fax (203) 688-4740

Enumeration date Jun 26, 2008

Last updated in NPPES Apr 23, 2015

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 049924 (CT) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 049924 (CT) Primary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

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 is the NPI number for Christopher Erb?

The National Provider Identifier (NPI) for Christopher Erb is 1538321138, a Type 1 (individual) record in the CMS NPPES registry.

Where does Christopher Erb practice?

The practice location on file with NPPES is in New Haven, CT. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-04-23.