Robert J. Mathews, MD
Nephrology Physician · Northfield, NJ
Robert J. Mathews, MD is a nephrology physician with a practice address in Northfield, New Jersey, and NPI 1902060221, issued on Jul 16, 2008. Check the license (New Jersey MA089336, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Robert J. Mathews
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License numbers
- MA089336 NJ
MD434778 PA
Self-reported in NPPES; status is on the state search - Practice location
- 510 Jackson Ave, Northfield, NJ 08225
- Phone
- (609) 383-0200
- Enumerated
- Jul 16, 2008
- Record last updated
- Feb 27, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (609) 383-8352
- Medicare enrollment
- Enrolled (PECOS I20110928000578); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 433 in New Jersey → Look up another NPI →
Also registered at 510 Jackson Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nitin Behl, M.D.Nephrology Physician1235423807
- David Blecker, MDNephrology Physician1245249473
- Jessica Bonner, APNAdult Health Nurse Practitioner1588053326
- Lacey CarlsonFamily Nurse Practitioner1710362520
- Amelia FascianoAdult Health Nurse Practitioner1083189054
- Sandra Hartman, RN MSN APNNephrology Physician1255340485
Verify Robert J. Mathews in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license MA089336Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average nephrology physician in 2024
3,592 Medicare Part D claims for 537 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Irbesartan438 claims
- Carvedilol329 claims
- Amlodipine Besylate242 claims
- Torsemide197 claims
- Farxiga177 claims
- Jardiance143 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: $325.23
15 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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 2 group practices
- Atlanticare Health Services, Inc.Atlantic City, NJ
- Northeast Kidney Care LLCNorthfield, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert J. Mathews among 433 nephrology physician records in New Jersey
Robert J. Mathews, MD is one of 433 nephrology physician records with a practice address in New Jersey. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 65% of them.
- NPI issued2008 · 65% of these records are older, 28% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 78% of these records are
- Graduated2003 · median 2000 among the 337 with a school on file
- Record last updated2012 · 62% 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 New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 nephrology physician records list a practice address in Northfield
They are 9 of the 343 NPPES records with a practice address in Northfield, and 433 nephrology physician records in New Jersey.
All 433 in New Jersey → Every provider in Northfield → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Nitin Behl, M.D.Northfield, NJ 082251235423807
- David Blecker, MDNorthfield, NJ 082251245249473
- Sandra Hartman, RN MSN APNNorthfield, NJ 082251255340485
- Howard Karp, DONorthfield, NJ 082251619986841
- Jay Shastri, DONorthfield, NJ 082251477758720
- Amanda Srinivasan, PA-CNorthfield, NJ 082251073194171
- Pryiesh Thakkar, DO MBANorthfield, NJ 082251689683815
- Raymond Schreyer, MDNorthfield, NJ 082281518976745
Common questions
What is Robert J. Mathews, MD's NPI number?
Robert J. Mathews, MD's National Provider Identifier (NPI) is 1902060221, issued on Jul 16, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Robert J. Mathews, MD located?
The NPPES record lists a practice address at 510 Jackson Ave, Northfield, NJ, 08225. Phone: (609) 383-0200. Providers update this record themselves, so call before visiting.
How can I verify Robert J. Mathews, MD's license?
NPPES lists New Jersey license number MA089336, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Robert J. Mathews, MD prescribe under Medicare Part D?
In 2024, Robert J. Mathews, MD had 3,592 Medicare Part D claims for 537 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.