James Robert Etzkorn, M.D.
Endocrinology, Diabetes & Metabolism Physician · Saint Louis, MO
James Robert Etzkorn, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Saint Louis, Missouri, and NPI 1124066253, issued on Jun 2, 2006. Check the license (Missouri R5648, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- James Robert Etzkorn
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- R5648 MO
Self-reported in NPPES; status is on the state search - Practice location
- 2821 N Ballas RD, Saint Louis, MO 63131
- Phone
- (314) 995-9718
- Enumerated
- Jun 2, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (314) 995-7196
- Medicare enrollment
- Enrolled (PECOS I20100916000773); accepts Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 1973
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 206 in Missouri → Look up another NPI →
Also registered at 2821 N Ballas RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Giuseppe Aliperti, M.D.Gastroenterology Physician1144264698
- Barbara Berger, M.S.W., L.C.S.W.Clinical Social Worker1902985351
- Kristina Brazier, D.C.Chiropractor1073806568
- Patrick Bronder, D.C.Chiropractor1427118769
- John Costello, M.D.Internal Medicine Physician1417062563
- Aaron Cregger, D.D.S.Dentist1053418616
Verify James Robert Etzkorn 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 R5648Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
1,684 Medicare Part D claims for 396 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 87% of claims.
Most prescribed
- Levoxyl898 claims
- Synthroid413 claims
- Unithroid122 claims
- Methimazole69 claims
- Prednisone51 claims
- Levothyroxine Sodium45 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.
James Robert Etzkorn among 206 endocrinology, diabetes & metabolism physician records in Missouri
James Robert Etzkorn, 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 50% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1973 · median 2003 among the 148 with a school on file
- Record last updated2026 · 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
- Robert Rilpuou, MDSaint Louis, MO 631311104146372
- Puspalatha Sajja, MDSaint Louis, MO 631311225448970
- Ruenrudee Suwannasri, MDSaint Louis, MO 631311922091818
- Harry Wadsworth, M.D.Saint Louis, MO 631311144213265
- Jonathan Bortz, M.D.Saint Louis, MO 631301992019921
- Nicole Ducharme, DOSaint Louis, MO 631291346208394
- Kathleen Lowe, MDSaint Louis, MO 631291639515315
- Bharathi Raju, MDSaint Louis, MO 631281720078843
Common questions
What is James Robert Etzkorn, M.D.'s NPI number?
James Robert Etzkorn, M.D.'s National Provider Identifier (NPI) is 1124066253, issued on Jun 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James Robert Etzkorn, M.D. located?
The NPPES record lists a practice address at 2821 N Ballas RD, Saint Louis, MO, 63131. Phone: (314) 995-9718. Providers update this record themselves, so call before visiting.
How can I verify James Robert Etzkorn, M.D.'s license?
NPPES lists Missouri license number R5648, 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 James Robert Etzkorn, M.D. prescribe under Medicare Part D?
In 2024, James Robert Etzkorn, M.D. had 1,684 Medicare Part D claims for 396 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.