William Warren, MD
NPI 1992704191 · Cardiovascular Disease Physician · Chattanooga, TN
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Warren, MD is a Cardiovascular Disease Physician provider in Chattanooga, TN (NPI 1992704191).
Provider details
- NPI number
- 1992704191
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 37188 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
5,929 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 | 2,011 | $8 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 1,002 | $13 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 837 | $118 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 794 | $15 |
| Blood Test, Clotting Time85610 | 464 | $4 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 71 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 1,258 | 313 |
| Amlodipine Besylate | 983 | 347 |
| Atorvastatin Calcium | 871 | 283 |
| Carvedilol | 832 | 263 |
| Metoprolol Succinate | 792 | 265 |
| Metoprolol Tartrate | 701 | 234 |
| Rosuvastatin Calcium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$38 across 2 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
- 2005-07-19
- Last updated
- 2013-05-02
Frequently asked questions
- What is William Warren's NPI number?
- William Warren's National Provider Identifier (NPI) is 1992704191, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Warren's specialty?
- William Warren is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is William Warren located?
- William Warren's practice location on file with NPPES is 2501 Citico Ave, Chattanooga, TN 37404-1127.
- What is William Warren's phone number?
- The practice phone number listed in the NPPES registry for William Warren is (423) 697-2000.
- Does William Warren accept Medicare?
- William Warren is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Warren's NPI active?
- Yes — William Warren's NPI (1992704191) is active in the NPPES registry as of the last update on 2013-05-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.