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

Individual provider Anesthesiology Physician · NPI 1770562209

Dr. John D Merwin, MD is an Anesthesiology in Saint Louis, Missouri. Graduated from University of Texas Medical School at San Antonio in 1985, 41 years ago. Practices with SSM Health Slu Hospital Anesthesia Physician Billing LLC, a 96-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
41
Trained at
University of Texas Medical School at San Antonio
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

10925 Brooktrail Ct
Saint Louis, MO 63141-8304
Phone: (314) 473-6800
Fax: (314) 473-6800
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 100344 (MO)

Record details

NPI number1770562209
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 12, 2006
Last updated in NPPESMarch 5, 2010

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolUNIVERSITY OF TEXAS MEDICAL SCHOOL AT SAN ANTONIO
Graduated 1985 (41 years in practice)
Group practice Ssm Health Slu Hospital Anesthesia Physician Billing Llc — 96 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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