Irl J. Don, MD
Internal Medicine Physician · Saint Louis, MO
Irl J. Don, MD is an internal medicine physician with a practice address in Saint Louis, Missouri, and NPI 1588616601, issued on May 17, 2006. Check the license (Missouri R3E59, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Irl J. Don
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- R3E59 MO
Self-reported in NPPES; status is on the state search - Practice location
- 4901 Forest Park Ave, Saint Louis, MO 63108
- Phone
- (314) 362-5060
- Enumerated
- May 17, 2006
- Record last updated
- Apr 17, 2025
- Fax
- (314) 362-6959
- Medicaid ID
- 206768608 MO
- Medicare enrollment
- Enrolled (PECOS I20050112000333); accepts Medicare assignment
- Medical or professional school
- Washington University School Of Medicine, 1972
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,604 in Missouri → Look up another NPI →
Also registered at 4901 Forest Park Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Eva Aagaard, MDGeneral Practice Physician1144286097
- Ashley Ahlbrand, ODOptometrist1215669007
- Muhammad Nabeel Akbar, MDNeuro-ophthalmology Physician1780204149
- Ashley Altman, FNPNurse Practitioner1457882417
- Kelly Amerson, WHNPWomen's Health Nurse Practitioner1205993169
- Milan Anadkat, MDDermatology Physician1639267149
Verify Irl J. Don 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 R3E59Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
18 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
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).
Irl J. Don among 2,604 internal medicine physician records in Missouri
Irl J. Don, MD is one of 2,604 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 59% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 55% of these records are
- Graduated1972 · median 2006 among the 1,443 with a school on file
- Record last updated2025 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
941 internal medicine physician records list a practice address in Saint Louis
They are 941 of the 27,605 NPPES records with a practice address in Saint Louis, and 2,604 internal medicine physician records in Missouri.
All 2,604 in Missouri → Every provider in Saint Louis → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Michael Bavlsik, MDSaint Louis, MO 631081295752756
- Michael Berk, MDSaint Louis, MO 631081700802014
- Hyemi Chong, MDSaint Louis, MO 631081659666535
- Bradley Evanoff, MDSaint Louis, MO 631081073539391
- Jennifer Hester, MDSaint Louis, MO 631081801824198
- Kevin Konzen, MDSaint Louis, MO 631081033102702
- Robin Kundra, MD PHDSaint Louis, MO 631081982620100
- Delani Mann, MDSt Louis, MO 631081871673681
Common questions
What is Irl J. Don, MD's NPI number?
Irl J. Don, MD's National Provider Identifier (NPI) is 1588616601, issued on May 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Irl J. Don, MD located?
The NPPES record lists a practice address at 4901 Forest Park Ave, Saint Louis, MO, 63108. Phone: (314) 362-5060. Providers update this record themselves, so call before visiting.
How can I verify Irl J. Don, MD's license?
NPPES lists Missouri license number R3E59, 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 Irl J. Don, MD prescribe under Medicare Part D?
In 2024, Irl J. Don, MD had 18 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. 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.