Ranju Singh, MD
NPI 1447308846 · Rheumatology Physician · Princeton, NJ
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ranju Singh, MD is a Rheumatology Physician provider in Princeton, NJ (NPI 1447308846).
Provider details
- NPI number
- 1447308846
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 25MAO7370700 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,804 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 402 | $135 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 269 | $15 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 214 | $9 |
| Red Blood Cell Sedimentation Rate, to Detect Inflammation, Non-Automated85651 | 185 | $4 |
| 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 | 175 | $17 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 284 | 88 |
| Methotrexate Sodiumbrand: Methotrexate | 200 | 56 |
| Hydroxychloroquine Sulfate | 110 | 39 |
| Ibandronate Sodium | 80 | 32 |
| Celecoxib | 73 | 23 |
| Gabapentin | 59 | 18 |
| Allopurinol | 55 | 16 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$69 across 2 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
Additional practice locations (3)
- 2 Research WayMonroe, NJ 08831-6816Phone: (609) 924-9300
- 3 Liberty StPlainsboro, NJ 08536-1816Phone: (609) 924-9300
- 601 Ewing StSuite A-8Princeton, NJ 08540-2757Phone: (609) 921-6555Fax: (609) 924-5911
Registry dates
- Enumerated
- 2007-01-08
- Last updated
- 2023-04-25
- Certified
- 2023-04-25
Frequently asked questions
- What is Ranju Singh's NPI number?
- Ranju Singh's National Provider Identifier (NPI) is 1447308846, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ranju Singh's specialty?
- Ranju Singh is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Ranju Singh located?
- Ranju Singh's practice location on file with NPPES is 419 N Harrison St, Princeton, NJ 08540-3594.
- What is Ranju Singh's phone number?
- The practice phone number listed in the NPPES registry for Ranju Singh is (609) 924-9300.
- Does Ranju Singh accept Medicare?
- Ranju Singh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ranju Singh's NPI active?
- Yes — Ranju Singh's NPI (1447308846) is active in the NPPES registry as of the last update on 2023-04-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.