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OPKAR S CHAWLA MD
NPI 1871548776
Internal Medicine in Centereach, NY

Active since May 23, 2006PECOS EnrolledAccepts Medicare Assignment
98.52/100
CMS Quality Rating
23 HOWELL AVENUE, STONY BROOK EXTENDED CARE, CENTEREACH, NY 11720(631) 542-0550(631) 542-7473 Get Directions Write a Review

NPPES record last updated: August 10, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 10, 2023, Oct 19, 2016 (2 updates tracked since 2016).

About Opkar S Chawla Md NPPES

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

OPKAR S CHAWLA MD (NPI 1871548776) is an individual internal medicine provider in Centereach, New York, licensed in New York (183894) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Suny/stony Brook University Hospital, and is a graduate of Other (1983).

NPPES Registry Identity

NPI1871548776
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameOPKAR S CHAWLACredential: MD
Location Address23 HOWELL AVENUE, STONY BROOK EXTENDED CARECentereach, NY 11720-2133
Mailing Address500 Commack Rd Unit 206Commack, NY 11725-5022 · (631) 675-2125 · Fax (631) 675-2628
Phone(631) 542-0550
Fax(631) 542-7473
Sole ProprietorNo
Medical School CMSOtherGraduated 1983
Enumeration DateMay 23, 2006
Last NPPES UpdateAugust 10, 20232 updates tracked since enumeration
NPPES CertifiedAugust 10, 2023
✔ NPI 1871548776 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NY · 183894
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
23 HOWELL AVENUE, Centereach, NY 11720
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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

Opkar S Chawla Md 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 ID547440471
PECOS Enrollment IDI20110210000403
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

6

Medicare enrollment records show Opkar Chawla reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Urgent Care Of New York PLLC
0.8 mi
Urgent Care
2112 MIDDLE COUNTRY RD
Centereach, NY 11720
  • Reassigned Medicare billing, New York enrollment
  • 7 clinicians in this Medicare group
NPI 1962181925 (631) 468-6900
Stony Brook Internists, University Faculty Practice Corporation
4.3 mi
Nephrology
SUNY @ STONY BROOK, HSC, L16, RM 020
Stony Brook, NY 11794
  • Reassigned Medicare billing, New York enrollment
  • 261 clinicians in this Medicare group
NPI 1215976337 (631) 444-2448
Excel Urgent Care Of Nesconset, PLLC
4.3 mi
Urgent Care
465 SMITHTOWN BLVD
Nesconset, NY 11767
  • Reassigned Medicare billing, New York enrollment
  • 31 clinicians in this Medicare group
NPI 1851679252 (613) 676-6700
Excel Urgent Care Of East Northport, PLLC
13 mi
Urgent Care
558 LARKFIELD RD
East Northport, NY 11731
  • Reassigned Medicare billing, New York enrollment
  • 33 clinicians in this Medicare group
NPI 1881978021 (631) 486-7459
Excel Urgent Care Of Wantagh PLLC
26 mi
Urgent Care
3430 SUNRISE HWY
Wantagh, NY 11793
  • Reassigned Medicare billing, New York enrollment
  • 66 clinicians in this Medicare group
NPI 1184067936 (516) 900-1600
Excel Urgent Care Of Nhp PLLC
34 mi
Urgent Care
900 HILLSIDE AVE
New Hyde Park, NY 11040
  • Reassigned Medicare billing, New York enrollment
  • 35 clinicians in this Medicare group
NPI 1952652281 (516) 519-8400

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 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 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.
818 services297 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
273 services141 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
159 services159 patients
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.
76 services48 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
40 services38 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
35 services34 patients

Hospital Affiliations CMS Care Compare

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

Suny/Stony Brook University Hospital

Acute Care Hospitals · Stony Brook, NY
4/5 CMS rating
OwnershipGovernment - State
CMS Certification Number330393
LocationHealth Sciences Center SunyStony Brook, NY 11794 · Suffolk County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11720 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.

98.52/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality82.85
Promoting Interoperability100
Improvement Activities40

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
21 suppliers62 claims158 services$5.73 avg. paid by Medicare
Normal, low and high calibrator solution / chips A4256
DME-Other DME · category DE000N
5 suppliers13 claims13 services$2.49 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
13 suppliers34 claims46 services$0.94 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Opkar Chawla's NPI number?

The NPI number for Opkar Chawla is 1871548776. It was assigned to this individual provider in the NPPES registry on May 23, 2006.

Where is Opkar Chawla located?

Opkar Chawla practices at 23 Howell Avenue Stony Brook Extended Care, Centereach, NY 11720. The listed phone number is (631) 542-0550.

What is Opkar Chawla's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Opkar Chawla enrolled in Medicare?

Yes. Opkar Chawla 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 Opkar Chawla's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Opkar Chawla reassigns Medicare benefits to 6 organizations: Urgent Care Of New York PLLC (Centereach, NY), Stony Brook Internists, University Faculty Practice Corporation (Stony Brook, NY), Excel Urgent Care Of Nesconset, PLLC (Nesconset, NY), Excel Urgent Care Of East Northport, PLLC (East Northport, NY), Excel Urgent Care Of Wantagh PLLC (Wantagh, NY) and 1 more organization, listed in the Medicare section above. 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 Opkar Chawla's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Opkar Chawla affiliated with any hospitals?

According to CMS data, Opkar Chawla is affiliated with Suny/Stony Brook University Hospital.

When was this NPI record last updated?

The NPPES record for Opkar Chawla was last updated on August 10, 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.