Mary Nelson, MD
NPI 1518165745 · Internal Medicine Physician · Knoxville, TN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Nelson, MD is a Internal Medicine Physician provider in Knoxville, TN (NPI 1518165745).
Provider details
- NPI number
- 1518165745
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 42558 (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
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,139 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 | 165 | $120 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 161 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 103 | $10 |
| 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 | 99 | $16 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 98 | $7 |
| Blood Test, Lipids (cholesterol and Triglycerides) |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 45 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 80 | 20 |
| Rosuvastatin Calcium | 68 | 24 |
| Atorvastatin Calcium | 61 | 24 |
| Amlodipine Besylate | 59 | 23 |
| Losartan Potassium | 43 | 21 |
| Lisinopril | 43 | 17 |
| Levothyroxine Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$911 across 50 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
Additional practice locations (1)
- 1924 Alcoa HwyU56Knoxville, TN 37920-1511Phone: (865) 305-9081Fax: (865) 305-8769
Registry dates
- Enumerated
- 2007-07-10
- Last updated
- 2023-11-21
- Certified
- 2023-11-21
Frequently asked questions
- What is Mary Nelson's NPI number?
- Mary Nelson's National Provider Identifier (NPI) is 1518165745, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Nelson's specialty?
- Mary Nelson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Nelson located?
- Mary Nelson's practice location on file with NPPES is 1819 Clinch Ave Ste 114, Knoxville, TN 37916-2435.
- What is Mary Nelson's phone number?
- The practice phone number listed in the NPPES registry for Mary Nelson is (865) 524-1631.
- Does Mary Nelson accept Medicare?
- Mary Nelson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Nelson's NPI active?
- Yes — Mary Nelson's NPI (1518165745) is active in the NPPES registry as of the last update on 2023-11-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.