Ralph Nader, MD
Nephrology Physician · Philadelphia, PA
Ralph Nader, MD is a nephrology physician with a practice address in Philadelphia, Pennsylvania, and NPI 1588154041, issued on May 10, 2018. Check the license (Pennsylvania MD476859, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Ralph Nader
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- MD476859 PA
Self-reported in NPPES; status is on the state search - Practice location
- 3400 Spruce St, Philadelphia, PA 19104
- Phone
- (215) 662-2638
- Enumerated
- May 10, 2018
- Record last updated
- Jul 25, 2022
- Fax
- (215) 349-5703
- Medicare enrollment
- Enrolled (PECOS I20220523000140); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 651 in Pennsylvania → Look up another NPI →
Also registered at 3400 Spruce St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Megan Abbott, CRNPNurse Practitioner1396771689
- Michael Abboud, MDEmergency Medicine Physician1962820852
- Emily AbdelmessihPediatric Pharmacist1891612560
- Mohammed AbdullahStudent in an Organized Health Care Education/Training Program1013595495
- Amin Abedini, MDStudent in an Organized Health Care Education/Training Program1912609017
- Farid Aboharb, MD, PHDStudent in an Organized Health Care Education/Training Program1295595973
Verify Ralph Nader in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD476859Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% fewer Medicare Part D claims than the average nephrology physician in 2024
672 Medicare Part D claims for 111 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Amlodipine Besylate83 claims
- Losartan Potassium44 claims
- Torsemide38 claims
- Nifedipine Er34 claims
- Carvedilol32 claims
- Hydrochlorothiazide31 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $1,818.75
1 payment: consulting fee; the largest payer was Otsuka Pharmaceutical Development & Commercialization, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- University OF Penn - Medical GroupPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ralph Nader among 651 nephrology physician records in Pennsylvania
Ralph Nader, MD is one of 651 nephrology physician records with a practice address in Pennsylvania. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 88% of them.
- NPI issued2018 · 88% of these records are older, 9% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2012 · median 2001 among the 468 with a school on file
- Record last updated2022 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Pennsylvania
There are 651 nephrology physician records in Pennsylvania.
All 651 in Pennsylvania → Every provider in Philadelphia → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Roy Bloom, MDPhiladelphia, PA 191041528093663
- Russell Carstens, MDPhiladelphia, PA 191041790713303
- Raphael Cohen, MDPhiladelphia, PA 191041699707711
- Debbie Cohen Stein, MDPhiladelphia, PA 191041932136215
- Laura Dember, M.D.Philadelphia, PA 191041144285370
- Joel Glickman, MDPhiladelphia, PA 191041124027727
- Simin Goral, MDPhiladelphia, PA 191041205863586
- Sabiha Hussain, MDPhiladelphia, PA 191041306826433
Common questions
What is Ralph Nader, MD's NPI number?
Ralph Nader, MD's National Provider Identifier (NPI) is 1588154041, issued on May 10, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Ralph Nader, MD located?
The NPPES record lists a practice address at 3400 Spruce St, Philadelphia, PA, 19104. Phone: (215) 662-2638. Providers update this record themselves, so call before visiting.
How can I verify Ralph Nader, MD's license?
NPPES lists Pennsylvania license number MD476859, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ralph Nader, MD prescribe under Medicare Part D?
In 2024, Ralph Nader, MD had 672 Medicare Part D claims for 111 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.