Opkar Chawla, MD
NPI 1871548776 · Internal Medicine Physician · Centereach, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Opkar Chawla, MD is a Internal Medicine Physician provider in Centereach, NY (NPI 1871548776).
Provider details
- NPI number
- 1871548776
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 183894 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,457 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 818 | $149 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 273 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 159 | $154 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 76 | $107 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 40 | $17 |
| Administration of Influenza Virus VaccineG0008 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 123 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 405 | 153 |
| Amlodipine Besylate | 334 | 119 |
| Levothyroxine Sodium | 290 | 97 |
| Rosuvastatin Calcium | 253 | 101 |
| Metoprolol Succinate | 250 | 90 |
| Omeprazole | 237 | 83 |
| Metformin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,885 across 68 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-23
- Last updated
- 2023-08-10
- Certified
- 2023-08-10
Frequently asked questions
- What is Opkar Chawla's NPI number?
- Opkar Chawla's National Provider Identifier (NPI) is 1871548776, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Opkar Chawla's specialty?
- Opkar Chawla is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Opkar Chawla located?
- Opkar Chawla's practice location on file with NPPES is 23 Howell Avenue, Centereach, NY 11720-2133.
- What is Opkar Chawla's phone number?
- The practice phone number listed in the NPPES registry for Opkar Chawla is (631) 542-0550.
- Does Opkar Chawla accept Medicare?
- Opkar Chawla is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Opkar Chawla's NPI active?
- Yes — Opkar Chawla's NPI (1871548776) is active in the NPPES registry as of the last update on 2023-08-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.