Opkar S. Chawla, MD
Internal Medicine Physician · Centereach, NY
Opkar S. Chawla, MD is an internal medicine physician with a practice address in Centereach, New York, and NPI 1871548776, issued on May 23, 2006. Check the license (New York 183894, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Opkar S. Chawla
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 183894 NY
Self-reported in NPPES; status is on the state search - Practice location
- 23 Howell Avenue, Centereach, NY 11720
- Phone
- (631) 542-0550
- Enumerated
- May 23, 2006
- Record last updated
- Aug 10, 2023
- Fax
- (631) 542-7473
- Medicare enrollment
- Enrolled (PECOS I20110210000403); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Verify Opkar S. Chawla in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 183894Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average internal medicine physician in 2024
7,591 Medicare Part D claims for 548 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 144 claims were for opioids.
Most prescribed
- Atorvastatin Calcium405 claims
- Amlodipine Besylate334 claims
- Levothyroxine Sodium290 claims
- Rosuvastatin Calcium253 claims
- Metoprolol Succinate250 claims
- Omeprazole237 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 98.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,884.77
68 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Stony Brook Internists University Faculty Practice CorporationStony Brook, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Opkar S. Chawla among 12,067 internal medicine physician records in New York
Opkar S. Chawla, MD is one of 12,067 internal medicine physician records with a practice address in New York. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1983 · median 2002 among the 7,221 with a school on file
- Record last updated2023 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in New York
There are 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Centereach → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Dominick Basile, M.D.Centereach, NY 117201366531311
- Jasjit Kochar, MDCentereach, NY 117201043255250
- Sunita Makhijani, M.D.Centerport, NY 117211003984212
- Gurwinder Sidhu, MDBrookhaven, NY 117191588126999
- Carl-Henri Sanchez, M.D.Central Islip, NY 117221790874964
- Rafael Almanzar-Peniche, M.D.W Brentwood, NY 117171629118542
- Leoncia Carlota, M.D.W Brentwood, NY 117171619016987
- Rebecca Empinado-Tse, MDWest Brentwood, NY 117171821136912
Common questions
What is Opkar S. Chawla, MD's NPI number?
Opkar S. Chawla, MD's National Provider Identifier (NPI) is 1871548776, issued on May 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Opkar S. Chawla, MD located?
The NPPES record lists a practice address at 23 Howell Avenue, Centereach, NY, 11720. Phone: (631) 542-0550. Providers update this record themselves, so call before visiting.
How can I verify Opkar S. Chawla, MD's license?
NPPES lists New York license number 183894, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Opkar S. Chawla, MD prescribe under Medicare Part D?
In 2024, Opkar S. Chawla, MD had 7,591 Medicare Part D claims for 548 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Opkar S. Chawla, MD's MIPS final score?
The 2023 MIPS final score is 98.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.