Quick answers
- Does Rajagopalan Rengan accept Medicare assignment?
- Yes. Medicare's clinician data says Rajagopalan Rengan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Rajagopalan Rengan see?
- In 2024, CMS data shows 1,028 Original Medicare patients and 3,170 services for Rajagopalan Rengan. This counts Original Medicare only and measures volume, not quality.
- What is Rajagopalan Rengan's NPI number?
- 1003257130. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Rajagopalan Rengan, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 1,028 |
|---|---|
| Services billed to Medicare | 3,170 |
| Different services or procedures | 49 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)813 services
- Critical care, first 30-74 minutes (99291)733 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)492 services
- Critical care, each additional 30 minutes (99292)334 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)144 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease63%
- Arthritis59%
- Heart failure53%
- Atrial fibrillation46%
Hospitals where Rajagopalan Rengan works
Medicare's Facility Affiliation Data lists Rajagopalan Rengan at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Geisinger-Community Medical CenterScranton, PA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 390001
- Nazareth HospitalPhiladelphia, PA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 390204
- Raritan Bay Medical CenterPerth Amboy, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310039
- Robert Wood Johnson University Hospital at RahwayRahway, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310024
- St Mary Medical CenterLanghorne, PA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 390258
Practice locations
Addresses where Rajagopalan Rengan is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 1 Hospital PlzOld Bridge, NJ 08857 (732) 630‑1000
- 1201 Langhorne Newtown RdLanghorne, PA 19047 (215) 750‑2000
- 1800 Mulberry StScranton, PA 18510 (570) 969‑7355
- 530 New Brunswick Ave, Raritan Bay Medical CenterPerth Amboy, NJ 08861 (732) 442‑3700
- 559 W Germantown Pike, Einstein Med Ctr MontgomeryEast Norriton, PA 19403 (484) 622‑1000
Group practices
Medicare enrollment lists Rajagopalan Rengan as a member of these groups (CMS data updated October 2, 2026).
- Geisinger Clinic3,467 clinicians in the group
- RWJBH Observation Associates LLC1,008 clinicians in the group
- Critical Care Physicians of Pennsylvania PC51 clinicians in the group
- Critical Care Physicians of New Jersey PC15 clinicians in the group
Specialties
Other pulmonologists in Old Bridge
Clinicians with the same Medicare primary specialty in Old Bridge, NJ — not a recommendation.
Other clinicians in Geisinger Clinic
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2013 (13 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1003257130 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians