Ralph Nader, MD
NPI 1588154041 · Nephrology Physician · Philadelphia, PA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ralph Nader, MD is a Nephrology Physician provider in Philadelphia, PA (NPI 1588154041).
Provider details
- NPI number
- 1588154041
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD476859 (PA)
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
8 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
751 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) |
|---|---|---|
| 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 | 180 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 146 | $81 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 135 | $80 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 54 | $118 |
| Hemodialysis Procedure With Physician Evaluation90935 | 47 | $72 |
| Other Inpatient Or Outpatient Dialysis Procedure |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 83 | 29 |
| Losartan Potassium | 44 | 18 |
| Torsemide | 38 | — |
| Nifedipinebrand: Nifedipine Er | 34 | 11 |
| Carvedilol | 32 | 11 |
| Hydrochlorothiazide | 31 | — |
| Dapagliflozin Propanediolbrand: Farxiga | 23 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,819 across 1 record (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
- 2018-05-10
- Last updated
- 2022-07-25
- Certified
- 2022-07-25
Frequently asked questions
- What is Ralph Nader's NPI number?
- Ralph Nader's National Provider Identifier (NPI) is 1588154041, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ralph Nader's specialty?
- Ralph Nader is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Ralph Nader located?
- Ralph Nader's practice location on file with NPPES is 3400 Spruce St, Philadelphia, PA 19104-4228.
- What is Ralph Nader's phone number?
- The practice phone number listed in the NPPES registry for Ralph Nader is (215) 662-2638.
- Does Ralph Nader accept Medicare?
- Ralph Nader is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ralph Nader's NPI active?
- Yes — Ralph Nader's NPI (1588154041) is active in the NPPES registry as of the last update on 2022-07-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.