Ranju Singh, MD
Rheumatology Physician · Princeton, NJ
Ranju Singh, MD is a rheumatology physician with a practice address in Princeton, New Jersey, and NPI 1447308846, issued on Jan 8, 2007. Check the license (New Jersey 25MAO7370700, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Ranju Singh
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 25MAO7370700 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 419 N Harrison St, Princeton, NJ 08540
- Phone
- (609) 924-9300
- Enumerated
- Jan 8, 2007
- Record last updated
- Apr 25, 2023
- Medicare enrollment
- Enrolled (PECOS I20110210000455); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 253 in New Jersey → Look up another NPI →
Also registered at 419 N Harrison St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ranju Singh 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 25MAO7370700Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
24% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,499 Medicare Part D claims for 276 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 113 claims were for opioids.
Most prescribed
- Prednisone284 claims
- Methotrexate200 claims
- Hydroxychloroquine Sulfate110 claims
- Ibandronate Sodium80 claims
- Celecoxib73 claims
- Gabapentin59 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: $68.77
2 payments; by number, the most common kind was education; the largest payer was Janssen Biotech, Inc. The 4,486 providers of this specialty with any payment received $8,538.33 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
- Princeton Medical Group,p.a.Princeton, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ranju Singh among 253 rheumatology physician records in New Jersey
Ranju Singh, MD is one of 253 rheumatology physician records with a practice address in New Jersey. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 44% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated1991 · median 2003 among the 190 with a school on file
- Record last updated2023 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in New Jersey
There are 253 rheumatology physician records in New Jersey.
All 253 in New Jersey → Every provider in Princeton → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Leonard Grossman, M.D.Princeton, NJ 085401578600136
- Anand Patel, MDPrinceton, NJ 085401669911863
- R Roberts, MDPrinceton, NJ 085401396735429
- Kudret Arslan, MDPlainsboro, NJ 085361255950457
- Sehris Khawaja, DOPennington, NJ 085341669888376
- Sajina Prabhakaran, M.DPennington, NJ 085341437310661
- William Torelli, D.O.Pennington, NJ 085341407247398
- Randall Krakauer, MDPrinceton Junction, NJ 085501588811012
Common questions
What is Ranju Singh, MD's NPI number?
Ranju Singh, MD's National Provider Identifier (NPI) is 1447308846, issued on Jan 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ranju Singh, MD located?
The NPPES record lists a practice address at 419 N Harrison St, Princeton, NJ, 08540. Phone: (609) 924-9300. Providers update this record themselves, so call before visiting.
How can I verify Ranju Singh, MD's license?
NPPES lists New Jersey license number 25MAO7370700, 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 Ranju Singh, MD prescribe under Medicare Part D?
In 2024, Ranju Singh, MD had 1,499 Medicare Part D claims for 276 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.