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DR. RAJKUMAR G MARIWALLA M.D.
NPI 1154309037
Internal Medicine - Gastroenterology in West Islip, NY

Active since January 02, 2006PECOS EnrolledAccepts Medicare Assignment
24.64/100
CMS Quality Rating
1175 MONTAUK HWY, SUITE #3, WEST ISLIP, NY 11795(631) 669-1171(631) 669-1912 Get Directions Write a Review

NPPES record last updated: January 8, 2014. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Rajkumar G Mariwalla M.d. NPPES

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

DR. RAJKUMAR G MARIWALLA M.D. (NPI 1154309037) is an individual gastroenterology provider in West Islip, New York, licensed in New York (143127) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with North Shore University Hospital, and is a graduate of Other (1975).

NPPES Registry Identity

NPI1154309037
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. RAJKUMAR G MARIWALLACredential: M.D.
Location Address1175 MONTAUK HWY, SUITE #3West Islip, NY 11795-4939
Mailing Address1111 Montauk Hwy, Suite #3-1West Islip, NY 11795-4910 · (631) 669-1171 · Fax (631) 669-1912
Phone(631) 669-1171
Fax(631) 669-1912
Sole ProprietorNo
Medical School CMSOtherGraduated 1975
Enumeration DateJanuary 2, 2006
Last NPPES UpdateJanuary 8, 2014
✔ NPI 1154309037 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in NY · 143127
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
1175 MONTAUK HWY, West Islip, NY 11795
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Rajkumar G Mariwalla 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 ID1951315845
PECOS Enrollment IDI20060131000158
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.

Areas of Expertise CMS Part B claims 10

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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
873 services561 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
299 services299 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
156 services154 patients
Colorectal cancer screening; colonoscopy on individual at high risk G0105
Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.
107 services106 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.
98 services86 patients
Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385
This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.
74 services73 patients

Hospital Affiliations CMS Care Compare 2

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

North Shore University Hospital

Acute Care Hospitals · Manhasset, NY
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330106
Location300 Community DriveManhasset, NY 11030 · Nassau County
Emergency services Birthing friendly

Good Samaritan Hospital Medical Center

Acute Care Hospitals · West Islip, NY
1/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number330286
Location1000 Montauk HighwayWest Islip, NY 11795 · Suffolk County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11795 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
$154.28 typical visit price
range $67.40 – $203.53
Typical copayment $38.57 (range $16.85 – $50.88)
Most-billed visit code 99204
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

24.64/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality0
Improvement Activities0
Cost82.13

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

PINNACLE PHYSICAL MEDICINE AND REHABILITATION, PC
Physical Medicine & Rehabilitation
1175 MONTAUK HWY, SUITE 6
WEST ISLIP, NY 11795
Suffolk County (631) 422-5371
DR. NITIN RAJKUMAR MARIWALLA MD, MPH, MS
Neurological Surgery
1175 MONTAUK HWY, STE 3
WEST ISLIP, NY 11795
Suffolk County (631) 500-9400
MRS. ANDREA JO GIBBONS R.P.A.-C.
Physician Assistant
1175 MONTAUK HWY, SUITE 4
WEST ISLIP, NY 11795
Suffolk County (631) 422-9600
TRUE NORTH MEDICAL OF SUFFOLK, PC
Neurological Surgery
1175 MONTAUK HWY
WEST ISLIP, NY 11795
Suffolk County (833) 666-6066
MEDICAL SERVICES OF MOUNT SINAI, P.C.
Neurological Surgery
1175 MONTAUK HWY
WEST ISLIP, NY 11795
Suffolk County (833) 666-6066
TRUE NORTH MEDICAL OF MANHASSET, PC
Neurological Surgery
1175 MONTAUK HWY
WEST ISLIP, NY 11795
Suffolk County (833) 666-6066
INDERJEET SINGH NAGPAL MD
Pediatrics
1175 MONTAUK HWY, STE4
WEST ISLIP, NY 11795
Suffolk County (631) 422-9600
WILLIAM DAVID DISANTI M.D.
Internal Medicine (Gastroenterology)
1175 MONTAUK HWY, SUITE 3
WEST ISLIP, NY 11795
Suffolk County (631) 669-1171

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 Rajkumar Mariwalla's NPI number?

The NPI number for Rajkumar Mariwalla is 1154309037. It was assigned to this individual provider in the NPPES registry on January 2, 2006.

Where is Rajkumar Mariwalla located?

Rajkumar Mariwalla practices at 1175 Montauk Hwy Suite #3, West Islip, NY 11795. The listed phone number is (631) 669-1171.

What is Rajkumar Mariwalla's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Rajkumar Mariwalla enrolled in Medicare?

Yes. Rajkumar Mariwalla 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.

Is Rajkumar Mariwalla affiliated with any hospitals?

According to CMS data, Rajkumar Mariwalla is affiliated with North Shore University Hospital and Good Samaritan Hospital Medical Center.

When was this NPI record last updated?

The NPPES record for Rajkumar Mariwalla was last updated on January 8, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.