Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Gary D Gray, MD

Individual provider Internal Medicine Physician · NPI 1497729826

Dr. Gary D Gray, MD is an Internal Medicine in O Fallon, Missouri. Graduated from Saint Louis University School of Medicine in 1999, 27 years ago. Practices with Internal Medicine at Winghaven, LLC, a 3-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
27
Trained at
Saint Louis University School of Medicine
Licensed in
MO
In the registry since
2006
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

5551 Winghaven Blvd Ste 290
O Fallon, MO 63368-3617
Phone: (636) 695-2575
Fax: (314) 590-5938
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 2001028980 (MO)

Record details

NPI number1497729826
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 14, 2006
Last updated in NPPESDecember 2, 2014
Mailing address5551 Winghaven Blvd, Ste 290, O Fallon, MO 63368-3617

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolSAINT LOUIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 1999 (27 years in practice)
Group practice Internal Medicine At Winghaven, Llc — 3 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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