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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Calvin Hall Jr., MD

Gastroenterology Physician in Chicago, IL · enumerated 2005.

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

National Provider Identifier

1992781702

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Registry record

Entity type Individual (Type 1)
Name Dr. Calvin Hall Jr.
Credential MD
Sex Male
Practice address Chicago, IL, 60616
Fax (312) 326-2636
Enumeration date Dec 22, 2005
Last updated in NPPES Aug 13, 2010

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 036053292 (IL) 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
1992781702 Other IL NPI - INDIVIDUAL
001617095 Other IL BSBS - IL - INDIVIDUAL
01621679 Other IL BCBS - GROUP - ILLINOIS
036053292 Medicaid IL -
100008176 Other IL RAILROAD - IL
705190 Other IL MEDICARE PROVIDER NUMBER

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 Calvin Hall?
The National Provider Identifier (NPI) for Calvin Hall is 1992781702, a Type 1 (individual) record in the CMS NPPES registry.
Where does Calvin Hall practice?
The practice location on file with NPPES is in Chicago, IL. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-08-13.