Joshua Ian Siner, MD
Hematology (Internal Medicine) Physician · Saint Louis, MO
Joshua Ian Siner, MD is a hematology (internal medicine) physician with a practice address in Saint Louis, Missouri, and NPI 1467944520, issued on Jun 5, 2018. Check the license (Missouri 2021012950, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Joshua Ian Siner
- Credential
- MD
- Primary taxonomy
- Hematology (Internal Medicine) Physician 207RH0000X
- License number
- 2021012950 MO
Self-reported in NPPES; status is on the state search - Practice location
- 4921 Parkview PL, Saint Louis, MO 63110
- Phone
- (314) 362-7216
- Enumerated
- Jun 5, 2018
- Record last updated
- Apr 17, 2025
- Fax
- (314) 362-8813
- Medicaid ID
- 200099019 MO
- Medicare enrollment
- Enrolled (PECOS I20240930000768); accepts Medicare assignment
- Medical or professional school
- Cooper Medical School Of Rowan University, 2018
- Entity
- Type 1 · individual
8 nearest hematology (internal medicine) physician records → All 22 in Missouri → Look up another NPI →
Also registered at 4921 Parkview PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mohammed Abbasi, MDPulmonary Disease Physician1497097083
- Helen Adams, AGNPGerontology Nurse Practitioner1730836776
- Muyibat Adelani, MDAdult Reconstructive Orthopaedic Surgery Physician1396908042
- Foluso Ademuyiwa, MDMedical Oncology Physician1083875538
- Syed Adil, MDAdult Reconstructive Orthopaedic Surgery Physician1467942953
- Homaa Ahmad, MDCardiovascular Disease Physician1477635092
Verify Joshua Ian Siner 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 2021012950Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average hematology (internal medicine) physician in 2024
13 Medicare Part D claims, against an average of 496 among the 1,036 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through one group practice
- Washington UniversitySaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joshua Ian Siner among 22 hematology (internal medicine) physician records in Missouri
Joshua Ian Siner, MD is one of 22 hematology (internal medicine) physician records with a practice address in Missouri. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 82% of them.
- NPI issued2018 · 82% of these records are older, 9% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2018 · median 2010 among the 15 with a school on file
- Record last updated2025 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology (Internal Medicine) Physician providers in Missouri
There are 22 hematology (internal medicine) physician records in Missouri.
All 22 in Missouri → Every provider in Saint Louis → Hematology (Internal Medicine) Physician nationwide →
The 8 hematology (internal medicine) physician records with the nearest ZIP codes
- Helen Ajufo, MDSaint Louis, MO 631101497282115
- Vorachart Auethavekiat, MDSaint Louis, MO 631101003872615
- Scot Hickman, MDSaint Louis, MO 631101114976818
- Gregory Longmore, MDSaint Louis, MO 631101912924473
- Amir Mahmoud, MDSaint Louis, MO 631101619549078
- Elaine Majerus, MDSaint Louis, MO 631101326064544
- Katherine Ponder, MDSaint Louis, MO 631101689692493
- Douglas Tollefsen, MDSaint Louis, MO 631101679599815
Common questions
What is Joshua Ian Siner, MD's NPI number?
Joshua Ian Siner, MD's National Provider Identifier (NPI) is 1467944520, issued on Jun 5, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Joshua Ian Siner, MD located?
The NPPES record lists a practice address at 4921 Parkview PL, Saint Louis, MO, 63110. Phone: (314) 362-7216. Providers update this record themselves, so call before visiting.
How can I verify Joshua Ian Siner, MD's license?
NPPES lists Missouri license number 2021012950, 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 Joshua Ian Siner, MD prescribe under Medicare Part D?
In 2024, Joshua Ian Siner, MD had 13 Medicare Part D claims; the average among hematology (internal medicine) physician prescribers was 496. Part D covers Medicare prescriptions only.
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.