Diana L. Westerfield, D.O.
Cardiovascular Disease Physician · Saint Peters, MO
Diana L. Westerfield, D.O. is a cardiovascular disease physician with a practice address in Saint Peters, Missouri, and NPI 1962440883, issued on Jun 3, 2006. Check the license (Missouri 118402, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Diana L. Westerfield
- Credential
- D.O.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- 118402 MO
Self-reported in NPPES; status is on the state search - Practice location
- 10 Hospital Dr Ste 100, Saint Peters, MO 63376
- Phone
- (636) 916-7272
- Enumerated
- Jun 3, 2006
- Record last updated
- May 19, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 243969409 MO
- Medicare enrollment
- Enrolled (PECOS I20040729001000); accepts Medicare assignment
- Medical or professional school
- At Still University Of Health Sciences, College Of Osteo Med, Kirksville, 1992
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 446 in Missouri → Look up another NPI →
Also registered at 10 Hospital Dr Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Martin Ast, M.D.Cardiovascular Disease Physician1679515415
- Sandeep Hindupur, M.D.Interventional Cardiology Physician1124164066
- Cheryl Hohe, ANPAdult Health Nurse Practitioner1942433966
- Cameron Koester, DOCardiovascular Disease Physician1831619022
- Shelby Lamkemeyer, PAPhysician Assistant1205549136
- Timothy Martin, MDCardiovascular Disease Physician1366486722
Verify Diana L. Westerfield 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 118402Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average cardiovascular disease physician in 2024
7,165 Medicare Part D claims for 782 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Metoprolol Succinate665 claims
- Atorvastatin Calcium654 claims
- Eliquis633 claims
- Lisinopril546 claims
- Metoprolol Tartrate475 claims
- Amlodipine Besylate404 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: $1,890.01
23 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 16,686 providers of this specialty with any payment received $3,819.56 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 one group practice
- Physician Groups LCSaint Peters, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diana L. Westerfield among 446 cardiovascular disease physician records in Missouri
Diana L. Westerfield, D.O. is one of 446 cardiovascular disease physician records with a practice address in Missouri. 81% 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 16% of them.
- NPI issued2006 · 16% of these records are older, 40% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1992 · median 1998 among the 293 with a school on file
- Record last updated2021 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in Missouri
There are 446 cardiovascular disease physician records in Missouri.
All 446 in Missouri → Every provider in Saint Peters → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Martin Ast, M.D.Saint Peters, MO 633761679515415
- Ahmad Daraghmeh, MDSaint Peters, MO 633761427287697
- Cameron Koester, DOSaint Peters, MO 633761831619022
- Marc Lewen, D.O.Saint Peters, MO 633761174565915
- Timothy Martin, MDSaint Peters, MO 633761366486722
- Aaron Tang, M.D.Saint Peters, MO 633761841456522
- Rodrigo Goh, M.D.Troy, MO 633791487615241
- Alexander Bollis, M.D.O Fallon, MO 633681558309757
Common questions
What is Diana L. Westerfield, D.O.'s NPI number?
Diana L. Westerfield, D.O.'s National Provider Identifier (NPI) is 1962440883, issued on Jun 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Diana L. Westerfield, D.O. located?
The NPPES record lists a practice address at 10 Hospital Dr Ste 100, Saint Peters, MO, 63376. Phone: (636) 916-7272. Providers update this record themselves, so call before visiting.
How can I verify Diana L. Westerfield, D.O.'s license?
NPPES lists Missouri license number 118402, 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 Diana L. Westerfield, D.O. prescribe under Medicare Part D?
In 2024, Diana L. Westerfield, D.O. had 7,165 Medicare Part D claims for 782 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.