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

John E Frattini, MD

Critical Care Medicine (Internal Medicine) Physician in Chesterfield, MO · enumerated 2006 · practices at Van Amburg & Busiek MD'S, LLC.

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

National Provider Identifier

1124093810

Verified

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Registry record

Entity type Individual (Type 1)

Name John E Frattini

Credential MD

Sex Male

Practice address Chesterfield, MO, 63017

Phone (314) 434-1500

Fax (314) 542-4891

Enumeration date Feb 17, 2006

Last updated in NPPES May 19, 2022

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License R6H05 (MO) Secondary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License R6H05 (MO) Secondary

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License R6H05 (MO) 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
P00351212	Other	MO	RR MEDICARE
203291737	Medicaid	MO	-

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 John Frattini?

The National Provider Identifier (NPI) for John Frattini is 1124093810, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Frattini practice?

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

Other providers at this practice address

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Van Amburg & Busiek MD'S, LLC Pharmacy · Chesterfield, MO NPI 1639738438

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-05-19.