John O'Connor, MD
NPI 1811917578 · Internal Medicine Physician · Calverton, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John O'Connor, MD is a Internal Medicine Physician provider in Calverton, NY (NPI 1811917578).
Provider details
- NPI number
- 1811917578
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 219769 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
572 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 188 | $69 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 153 | $123 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 104 | $79 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 44 | $147 |
| Administration of Influenza Virus VaccineG0008 | 29 | $15 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 88 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 153 | 24 |
| Atorvastatin Calcium | 138 | 27 |
| Amlodipine Besylate | 136 | 23 |
| Rosuvastatin Calcium | 125 | 30 |
| Levothyroxine Sodium | 122 | 27 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 103 | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-19
- Last updated
- 2025-01-08
Frequently asked questions
- What is John O'Connor's NPI number?
- John O'Connor's National Provider Identifier (NPI) is 1811917578, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John O'Connor's specialty?
- John O'Connor is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John O'Connor located?
- John O'Connor's practice location on file with NPPES is North Suffolk Medical Care, PC, Calverton, NY 11933-1185.
- What is John O'Connor's phone number?
- The practice phone number listed in the NPPES registry for John O'Connor is (631) 208-2919.
- Does John O'Connor accept Medicare?
- John O'Connor is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John O'Connor's NPI active?
- Yes — John O'Connor's NPI (1811917578) is active in the NPPES registry as of the last update on 2025-01-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.