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RAJESH THIRUMARAN M.D.
NPI 1699949040
Internal Medicine - Hematology & Oncology in Darby, PA

Active since April 16, 2008PECOS EnrolledAccepts Medicare Assignment
1500 LANSDOWNE AVE STE G-103, DARBY, PA 19023(610) 237-7950(610) 237-7955 Get Directions Write a Review

NPPES record last updated: June 26, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Rajesh Thirumaran M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

RAJESH THIRUMARAN M.D. (NPI 1699949040) is an individual hematology & oncology provider in Darby, Pennsylvania, licensed in Pennsylvania (MD423189) and active in the NPI registry since April 2008. He is enrolled in Medicare PECOS, is affiliated with Mercy Catholic Medical Center- Mercy Fitzgerald, and is a graduate of Other (1993).

NPPES Registry Identity

NPI1699949040
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameRAJESH THIRUMARANCredential: M.D.
Location Address1500 LANSDOWNE AVE STE G-103Darby, PA 19023-1200
Mailing Address1500 Lansdowne Ave Ste G-103Darby, PA 19023-1200 · (610) 237-7950 · Fax (610) 237-7955
Phone(610) 237-7950
Fax(610) 237-7955
Sole ProprietorNo
Medical School CMSOtherGraduated 1993
Enumeration DateApril 16, 2008
Last NPPES UpdateJune 26, 2023
NPPES CertifiedJune 26, 2023
✔ NPI 1699949040 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in PA · MD423189
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
1500 LANSDOWNE AVE STE G-103, Darby, PA 19023
Open in Google Maps ↗

Other Identifiers 1

Other2298293000PA · Independence Blue Cross

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter Health, Ambetter Health of Delaware.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Rajesh Thirumaran M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9638149743
PECOS Enrollment IDI20040727001268
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Rajesh Thirumaran reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Trinity Health Mid-Atlantic Medical Group
Same address
Hematology & Oncology
1500 LANSDOWNE AVE STE G103
Darby, PA 19023
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 646 clinicians in this Medicare group
NPI 1245756626 (610) 237-7950
Mercy Catholic Medical Center Of Southeastern PA
Same address
Family Medicine
1503 LANSDOWNE AVE STE 2000
Darby, PA 19023
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 45 clinicians in this Medicare group
NPI 1932180205 (610) 237-2529

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
192 services63 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
182 services63 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
90 services41 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
46 services42 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
14 services14 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mercy Catholic Medical Center- Mercy Fitzgerald

Acute Care Hospitals · Darby, PA
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390156
Location1500 Lansdowne AveDarby, PA 19023 · Delaware County
Emergency services

Thomas Jefferson University Hospital

Acute Care Hospitals · Philadelphia, PA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390174
Location111 South 11th StreetPhiladelphia, PA 19107 · Philadelphia County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19023 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$180.99 typical visit price
range $59.88 – $180.99
Typical copayment $45.24 (range $14.97 – $45.24)
Most-billed visit code 99205
Established Patient
$105.21 typical visit price
range $19.30 – $147.29
Typical copayment $26.30 (range $4.82 – $36.82)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Rajesh Thirumaran's NPI number?

The NPI number for Rajesh Thirumaran is 1699949040. It was assigned to this individual provider in the NPPES registry on April 16, 2008.

Where is Rajesh Thirumaran located?

Rajesh Thirumaran practices at 1500 Lansdowne Ave Ste G-103, Darby, PA 19023. The listed phone number is (610) 237-7950.

What is Rajesh Thirumaran's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Rajesh Thirumaran enrolled in Medicare?

Yes. Rajesh Thirumaran is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Rajesh Thirumaran's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Rajesh Thirumaran reassigns Medicare benefits to 2 organizations: Trinity Health Mid-Atlantic Medical Group (Darby, PA) and Mercy Catholic Medical Center Of Southeastern PA (Darby, PA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Rajesh Thirumaran's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Rajesh Thirumaran accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Rajesh Thirumaran as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Rajesh Thirumaran affiliated with any hospitals?

According to CMS data, Rajesh Thirumaran is affiliated with Mercy Catholic Medical Center- Mercy Fitzgerald and Thomas Jefferson University Hospital.

When was this NPI record last updated?

The NPPES record for Rajesh Thirumaran was last updated on June 26, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.