Diana Westerfield, D.O.
NPI 1962440883 · Cardiovascular Disease Physician · Saint Peters, MO
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diana Westerfield, D.O. is a Cardiovascular Disease Physician provider in Saint Peters, MO (NPI 1962440883).
Provider details
- NPI number
- 1962440883
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- 118402 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,484 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 505 | $123 |
| Evaluation of Single, Dual, Multiple Lead Or Leadless Pacemaker System, Remote Up to 90 Days93294 | 191 | $28 |
| Evaluation of Single, Dual, Multiple Lead Or Leadless Pacemaker System Or Implantable Defibrillator System, Remote Up to 90 Days93296 | 191 | $20 |
| Electrocardiogram (ecg) Up to 30 Days Continuous With Symptom Monitoring, Transmission and Review and Report By Health Care Professional93272 | 92 | $23 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 84 | $13 |
| Electrocardiogram (ecg) 2-Day Continuous With Review By Health Care Professional93227 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 54 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 665 | 180 |
| Atorvastatin Calcium | 654 | 181 |
| Apixabanbrand: Eliquis | 633 | 151 |
| Lisinopril | 546 | 146 |
| Metoprolol Tartrate | 475 | 133 |
| Amlodipine Besylate | 404 | 114 |
| Carvedilol |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,890 across 23 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-03
- Last updated
- 2021-05-19
- Certified
- 2021-05-19
Frequently asked questions
- What is Diana Westerfield's NPI number?
- Diana Westerfield's National Provider Identifier (NPI) is 1962440883, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Westerfield's specialty?
- Diana Westerfield is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Diana Westerfield located?
- Diana Westerfield's practice location on file with NPPES is 10 Hospital Dr Ste 100, Saint Peters, MO 63376-1659.
- What is Diana Westerfield's phone number?
- The practice phone number listed in the NPPES registry for Diana Westerfield is (636) 916-7272.
- Does Diana Westerfield accept Medicare?
- Diana Westerfield is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diana Westerfield's NPI active?
- Yes — Diana Westerfield's NPI (1962440883) is active in the NPPES registry as of the last update on 2021-05-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.