Peter C. Westman, MD
Internal Medicine Physician · Saint Louis, MO
Peter C. Westman, MD is an internal medicine physician with a practice address in Saint Louis, Missouri, and NPI 1346866902, issued on Jun 19, 2020. Check the license (Missouri 2023002793, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Peter C. Westman
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 2023002793 MO
Self-reported in NPPES; status is on the state search - Practice location
- 3009 N Ballas RD Ste 227A, Saint Louis, MO 63131
- Phone
- (314) 996-7800
- Enumerated
- Jun 19, 2020
- Record last updated
- Jun 28, 2023
- Medicare enrollment
- Enrolled (PECOS I20230818003357); accepts Medicare assignment
- Medical or professional school
- Virginia Commonwealth University, School Of Medicine, 2020
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,604 in Missouri → Look up another NPI →
Also registered at 3009 N Ballas RD Ste 227A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Louise Blase, NPNurse Practitioner1154789048
- Jeremy Defoe, D.O.Family Medicine Physician1225393739
- Ashley Denmark, DOFamily Medicine Physician1912388943
- Michael Fuller, MDInternal Medicine Physician1194732842
- Shannon Lemp, ANPNurse Practitioner1134725385
- Maanasi Madan, MBBSHospitalist Physician1861658874
Verify Peter C. Westman 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 2023002793Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% more Medicare Part D claims than the average internal medicine physician in 2024
5,112 Medicare Part D claims for 526 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 128 claims were for opioids.
Most prescribed
- Atorvastatin Calcium320 claims
- Amlodipine Besylate246 claims
- Rosuvastatin Calcium213 claims
- Levothyroxine Sodium165 claims
- Losartan Potassium131 claims
- Mounjaro123 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.
Industry payments in 2024: $85.39
1 payment: food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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 4 group practices
- Aging Well Health Care, LLCSaint Louis, MO
- Arnold Physical Therapy And Sports Medicine LLCSaint Louis, MO
- Physical Therapy Spine And Sports Medicine LLCBallwin, MO
- Physician Groups LCSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Peter C. Westman among 2,604 internal medicine physician records in Missouri
Peter C. Westman, 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 2020, is newer than 75% of them.
- NPI issued2020 · 75% of these records are older, 21% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 55% of these records are
- Graduated2020 · median 2006 among the 1,443 with a school on file
- Record last updated2023 · 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
- Asim Ali, MDSaint Louis, MO 631311821047218
- Paul Altsheler, MDSaint Louis, MO 631311346225372
- Richard Bligh, MDSaint Louis, MO 631311306813050
- J Corder, MDSaint Louis, MO 631311184698987
- Thomas Greco, M.D.Saint Louis, MO 631311417920927
- Zahirul Haque, MDSaint Louis, MO 631311578536546
- Joseph Hilgeman, MDDes Peres, MO 631311407820145
- Andrea Holthaus, MDSaint Louis, MO 631311528031473
Common questions
What is Peter C. Westman, MD's NPI number?
Peter C. Westman, MD's National Provider Identifier (NPI) is 1346866902, issued on Jun 19, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Peter C. Westman, MD located?
The NPPES record lists a practice address at 3009 N Ballas RD Ste 227A, Saint Louis, MO, 63131. Phone: (314) 996-7800. Providers update this record themselves, so call before visiting.
How can I verify Peter C. Westman, MD's license?
NPPES lists Missouri license number 2023002793, 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 Peter C. Westman, MD prescribe under Medicare Part D?
In 2024, Peter C. Westman, MD had 5,112 Medicare Part D claims for 526 beneficiaries; 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.