Fadi F. Siyam, M.D.
Endocrinology, Diabetes & Metabolism Physician · Saint Louis, MO
Fadi F. Siyam, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Saint Louis, Missouri, and NPI 1558526574, issued on Jul 21, 2008. Check the license (Missouri 2013002833, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Fadi F. Siyam
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- 2013002833 MO
036150752 IL
MD220356 OR
Self-reported in NPPES; status is on the state search - Practice location
- 12700 Southfork RD Ste 205, Saint Louis, MO 63128
- Phone
- (314) 525-7350
- Enumerated
- Jul 21, 2008
- Record last updated
- Feb 4, 2025
- Fax
- (314) 525-7356
- Medicare enrollment
- Enrolled (PECOS I20140207000856); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 206 in Missouri → Look up another NPI →
Verify Fadi F. Siyam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2013002833Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
2,425 Medicare Part D claims for 682 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 53% of claims.
Most prescribed
- Lantus Solostar156 claims
- Metformin Hcl144 claims
- Levothyroxine Sodium133 claims
- Jardiance128 claims
- Ozempic111 claims
- Glimepiride98 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 94.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $193.97
6 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Mercy Clinic Endocrinology LLCSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Fadi F. Siyam among 206 endocrinology, diabetes & metabolism physician records in Missouri
Fadi F. Siyam, M.D. is one of 206 endocrinology, diabetes & metabolism physician records with a practice address in Missouri. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 58% of them.
- NPI issued2008 · 58% of these records are older, 37% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2005 · median 2003 among the 148 with a school on file
- Record last updated2025 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Missouri
There are 206 endocrinology, diabetes & metabolism physician records in Missouri.
All 206 in Missouri → Every provider in Saint Louis → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Bharathi Raju, MDSaint Louis, MO 631281720078843
- K. Thampy, M.D.Saint Louis, MO 631281205816790
- Nicole Ducharme, DOSaint Louis, MO 631291346208394
- Kathleen Lowe, MDSaint Louis, MO 631291639515315
- Megan Wood, M.D.St Louis, MO 631271407052996
- Jonathan Bortz, M.D.Saint Louis, MO 631301992019921
- James Etzkorn, M.D.Saint Louis, MO 631311124066253
- Robert Rilpuou, MDSaint Louis, MO 631311104146372
Common questions
What is Fadi F. Siyam, M.D.'s NPI number?
Fadi F. Siyam, M.D.'s National Provider Identifier (NPI) is 1558526574, issued on Jul 21, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Fadi F. Siyam, M.D. located?
The NPPES record lists a practice address at 12700 Southfork RD Ste 205, Saint Louis, MO, 63128. Phone: (314) 525-7350. Providers update this record themselves, so call before visiting.
How can I verify Fadi F. Siyam, M.D.'s license?
NPPES lists Missouri license number 2013002833, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Fadi F. Siyam, M.D. prescribe under Medicare Part D?
In 2024, Fadi F. Siyam, M.D. had 2,425 Medicare Part D claims for 682 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Fadi F. Siyam, M.D.'s MIPS final score?
The 2023 MIPS final score is 94.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.