Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Michael William Nash, MD

Individual provider Family Medicine Physician · NPI 1376577825

Michael William Nash, MD is registered under Family Practice in Saint Louis, Missouri. Graduated from Saint Louis University School of Medicine in 2003, 23 years ago. Practices with Mercy Clinic East Communities, a 573-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois and Missouri.

Years since qualifying
23
Trained at
Saint Louis University School of Medicine
Licensed in
IL, MO
In the registry since
2006
Specialties on file
2
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

3637 S Geyer Rd
Saint Louis, MO 63127-1203
Phone: (314) 525-1887
Fax: (314) 525-1868
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 901 Patients First Dr Ste 2742, Washington, MO 63090-4700 — (636) 239-8825

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 2017029652 (MO)
Family Medicine Physician Taxonomy 207Q00000X · Licence 036-115521 (IL)

Record details

NPI number1376577825
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 10, 2006
Last updated in NPPESJuly 21, 2026
Certification dateJuly 21, 2026

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolSAINT LOUIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 2003 (23 years in practice)
Group practice Mercy Clinic East Communities — 573 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients195
Services billed 395 a service is one billed item, such as a visit, a test or a procedure
Average patient age80

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.

Practises at

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

Colleagues at Mercy Clinic East Communities

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 573 clinicians in the practice; 12 are shown here.

Other providers in Saint Louis