Terry Zellmer, MD
NPI 1104827690 · Interventional Cardiology Physician · Baton Rouge, LA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Terry Zellmer, MD is a Interventional Cardiology Physician provider in Baton Rouge, LA (NPI 1104827690).
Provider details
- NPI number
- 1104827690
- Entity type
- Individual
- Primary specialty
- Interventional Cardiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 017796 (LA)
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
2,898 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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 1,094 | $8 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 412 | $177 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 342 | $13 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 260 | $182 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 136 | $126 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 108 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clopidogrel Bisulfatebrand: Clopidogrel | 576 | 164 |
| Amlodipine Besylate | 462 | 146 |
| Metoprolol Succinate | 419 | 128 |
| Sacubitril/Valsartanbrand: Entresto | 406 | 84 |
| Atorvastatin Calcium | 364 | 103 |
| Bisoprolol/Hydrochlorothiazidebrand: Bisoprolol-Hydrochlorothiazide | 357 | 96 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,045 across 47 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
- 2005-08-09
- Last updated
- 2026-03-31
- Certified
- 2026-03-31
Frequently asked questions
- What is Terry Zellmer's NPI number?
- Terry Zellmer's National Provider Identifier (NPI) is 1104827690, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Terry Zellmer's specialty?
- Terry Zellmer is listed in the NPPES registry with a primary specialty of Interventional Cardiology Physician (Allopathic & Osteopathic Physicians).
- Where is Terry Zellmer located?
- Terry Zellmer's practice location on file with NPPES is 5231 Brittany Dr, Baton Rouge, LA 70808-9100.
- What is Terry Zellmer's phone number?
- The practice phone number listed in the NPPES registry for Terry Zellmer is (225) 769-0933.
- Does Terry Zellmer accept Medicare?
- Terry Zellmer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Terry Zellmer's NPI active?
- Yes — Terry Zellmer's NPI (1104827690) is active in the NPPES registry as of the last update on 2026-03-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.