Matthew J. Walter, MD
Medical Oncology Physician · Saint Louis, MO
Matthew J. Walter, MD is a medical oncology physician with a practice address in Saint Louis, Missouri, and NPI 1750309472, issued on Jul 18, 2006. Check the license (Missouri 2003020148, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Matthew J. Walter
- Credential
- MD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- 2003020148 MO
Self-reported in NPPES; status is on the state search - Practice location
- 4500 Forest Park Ave, Saint Louis, MO 63108
- Phone
- (314) 454-8304
- Enumerated
- Jul 18, 2006
- Record last updated
- Apr 17, 2025
- Fax
- (314) 454-5902
- Medicaid ID
- 209294701 MO
- Medicare enrollment
- Enrolled (PECOS I20041013000049); accepts Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 1988
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 156 in Missouri → Look up another NPI →
Also registered at 4500 Forest Park Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Camille Abboud, MDMedical Oncology Physician1316965320
- Douglas Adkins, MDMedical Oncology Physician1164440616
- Rebecca Aft, MDSurgical Oncology Physician1164440897
- Amber Afzal, MDHematology (Internal Medicine) Physician1831539808
- Caleb Bannister, PHARM. D.Pharmacist1124718283
- Stephanie Bauer, FNPFamily Nurse Practitioner1639285968
Verify Matthew J. Walter 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 2003020148Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average medical oncology physician in 2024
163 Medicare Part D claims for 21 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Acyclovir18 claims
- Ciprofloxacin Hcl14 claims
- Jakafi12 claims
- Escitalopram Oxalate11 claims
- Promacta11 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 practice group's MIPS final score for 2023 (Medicare payment program): 79.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
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).
Matthew J. Walter among 156 medical oncology physician records in Missouri
Matthew J. Walter, MD is one of 156 medical oncology physician records with a practice address in Missouri. 92% 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 3% of them.
- NPI issued2006 · 3% of these records are older, 61% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated1988 · median 2003 among the 127 with a school on file
- Record last updated2025 · 23% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Missouri
There are 156 medical oncology physician records in Missouri.
All 156 in Missouri → Every provider in Saint Louis → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Camille Abboud, MDSaint Louis, MO 631081316965320
- Douglas Adkins, MDSaint Louis, MO 631081164440616
- Amanda Cashen, MDSaint Louis, MO 631081215953534
- John Dipersio, MDSaint Louis, MO 631081730106295
- Todd Fehniger, MDSaint Louis, MO 631081154447233
- Armin Ghobadi, MDSaint Louis, MO 631081609085356
- Meagan Jacoby, MDSaint Louis, MO 631081447371786
- Iskra Pusic, MDSaint Louis, MO 631081164699161
Common questions
What is Matthew J. Walter, MD's NPI number?
Matthew J. Walter, MD's National Provider Identifier (NPI) is 1750309472, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Matthew J. Walter, MD located?
The NPPES record lists a practice address at 4500 Forest Park Ave, Saint Louis, MO, 63108. Phone: (314) 454-8304. Providers update this record themselves, so call before visiting.
How can I verify Matthew J. Walter, MD's license?
NPPES lists Missouri license number 2003020148, 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 Matthew J. Walter, MD prescribe under Medicare Part D?
In 2024, Matthew J. Walter, MD had 163 Medicare Part D claims for 21 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is Matthew J. Walter, MD's MIPS final score?
The 2023 MIPS final score is 79.3 of 100, reported for the practice group. 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.