Charles Clark, M.D.
NPI 1649680406 · Internal Medicine Physician · Nashville, TN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Clark, M.D. is a Internal Medicine Physician provider in Nashville, TN (NPI 1649680406).
Provider details
- NPI number
- 1649680406
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 56206 (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 tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,116 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 472 | $121 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 262 | $126 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 110 | $80 |
| Administration of Influenza Virus VaccineG0008 | 81 | $30 |
| Admn Sarscov2 Vacc 1 Dose90480 | 68 | $37 |
| 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'S |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 117 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 553 | 168 |
| Amlodipine Besylate | 419 | 122 |
| Losartan Potassium | 294 | 85 |
| Omeprazole | 287 | 84 |
| Hydrochlorothiazide | 208 | 65 |
| Lisinopril | 205 | 60 |
| Rosuvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-05-02
- Last updated
- 2022-03-26
- Certified
- 2022-03-26
Frequently asked questions
- What is Charles Clark's NPI number?
- Charles Clark's National Provider Identifier (NPI) is 1649680406, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Clark's specialty?
- Charles Clark is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Clark located?
- Charles Clark's practice location on file with NPPES is Vanderbilt University Dept of Medicine, Nashville, TN 37232.
- What is Charles Clark's phone number?
- The practice phone number listed in the NPPES registry for Charles Clark is (615) 322-0417.
- Does Charles Clark accept Medicare?
- Charles Clark is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Clark's NPI active?
- Yes — Charles Clark's NPI (1649680406) is active in the NPPES registry as of the last update on 2022-03-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.