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

Fadi F Siyam, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1558526574

Fadi F Siyam, MD is an Endocrinology in Saint Louis, Missouri. Qualified in 2005, 21 years ago. Practices with Mercy Clinic Endocrinology LLC, a 7-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Illinois, Missouri and Oregon.

Years since qualifying
21
Licensed in
IL, MO, OR
In the registry since
2008
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

12700 Southfork Rd Ste 205
Saint Louis, MO 63128-3201
Phone: (314) 525-7350
Fax: (314) 525-7356
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence 2013002833 (MO)
Endocrinology, Diabetes & Metabolism Physician Taxonomy 207RE0101X · Licence MD220356 (OR)
Endocrinology, Diabetes & Metabolism Physician Taxonomy 207RE0101X · Licence 036150752 (IL)

Record details

NPI number1558526574
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 21, 2008
Last updated in NPPESFebruary 4, 2025
Certification dateFebruary 4, 2025

Medicare enrollment

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

Medicare specialtyENDOCRINOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2005 (21 years in practice)
Group practice Mercy Clinic Endocrinology Llc — 7 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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