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Dr. Chao Guo, MD

Internal Medicine Physician in Stamford, CT · enumerated 2015.

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

National Provider Identifier

1043606486

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Registry record

Entity type Individual (Type 1)
Name Dr. Chao Guo
Credential MD
Sex Male
Practice address 30 Shelburne Rd, Dept of Medicine, Stamford, CT, 06902
Phone (203) 276-7147
Fax (203) 276-7368
Enumeration date Apr 13, 2015
Last updated in NPPES Nov 10, 2021

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 25MA10656300 (NJ) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License ME135339 (FL) Secondary
208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 036158670 (IL) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 286545 (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.

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Frequently asked questions

What is the NPI number for Chao Guo?
The National Provider Identifier (NPI) for Chao Guo is 1043606486, a Type 1 (individual) record in the CMS NPPES registry.
Where does Chao Guo practice?
The practice location on file with NPPES is in Stamford, 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 2021-11-10.