Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

John E Frattini, MD

Individual provider Internal Medicine Physician · NPI 1124093810

John E Frattini, MD is registered under Pulmonary Disease in Chesterfield, Missouri. Graduated from Washington University School of Medicine in 1986, 40 years ago. Practices with Cogent Healthcare of Missouri Inc, a 30-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
40
Trained at
Washington University School of Medicine
Licensed in
MO
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

232 S Woodsmill Rd
Chesterfield, MO 63017-3417
Phone: (314) 434-1500
Fax: (314) 542-4891
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 12255 Depaul Dr, Bridgeton, MO 63044-6304 — (314) 209-5180

Specialties & licences

Critical Care Medicine (Internal Medicine) Physician (primary) Taxonomy 207RC0200X · Licence R6H05 (MO)
Internal Medicine Physician Taxonomy 207R00000X · Licence R6H05 (MO)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence R6H05 (MO)

Record details

NPI number1124093810
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedFebruary 17, 2006
Last updated in NPPESMay 19, 2022
Certification dateMay 4, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS), INTERNAL MEDICINE
Medical schoolWASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 1986 (40 years in practice)
Group practice Cogent Healthcare Of Missouri Inc — 30 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients19
Services billed 32 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $124 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Ssm St Joseph Health Center Hospital · Saint Charles, MO · listed as St Joseph Health Center
  • Ssm Health Depaul Hospital St Louis Hospital · Bridgeton, MO
  • Ssm Health St Mary'S Hospital - St Louis Hospital · Saint Louis, MO
  • Ssm St Clare Health Center Hospital · Fenton, MO
  • Ssm St Joseph Hospital West Hospital · Lake Saint Louis, MO

Colleagues at Cogent Healthcare of Missouri Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 30 clinicians in the practice; 12 are shown here.

Other providers in Chesterfield