Mark Abi Nader, M.D.
NPI 1841538147 · Nephrology Physician · Memphis, TN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Abi Nader, M.D. is a Nephrology Physician provider in Memphis, TN (NPI 1841538147).
Provider details
- NPI number
- 1841538147
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD52513 (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
13 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
2,040 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 522 | $101 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 493 | $109 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 491 | $67 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 160 | $148 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 86 | $294 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Telmisartan | 237 | 92 |
| Bumetanide | 231 | 83 |
| Chlorthalidone | 170 | 71 |
| Dapagliflozin Propanediolbrand: Farxiga | 135 | 29 |
| Carvedilol | 101 | 38 |
| Spironolactone | 97 | 33 |
| Losartan Potassium | 84 | 35 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,661 across 77 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
- 2013-01-21
- Last updated
- 2018-05-24
Frequently asked questions
- What is Mark Abi Nader's NPI number?
- Mark Abi Nader's National Provider Identifier (NPI) is 1841538147, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Abi Nader's specialty?
- Mark Abi Nader is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Abi Nader located?
- Mark Abi Nader's practice location on file with NPPES is 3950 New Covington Pike, Memphis, TN 38128.
- What is Mark Abi Nader's phone number?
- The practice phone number listed in the NPPES registry for Mark Abi Nader is (901) 382-5256.
- Does Mark Abi Nader accept Medicare?
- Mark Abi Nader is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Abi Nader's NPI active?
- Yes — Mark Abi Nader's NPI (1841538147) is active in the NPPES registry as of the last update on 2018-05-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.