John O'Connor, MD
NPI 1659465458 · Family Medicine Physician · Marathon, FL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John O'Connor, MD is a Family Medicine Physician provider in Marathon, FL (NPI 1659465458).
Provider details
- NPI number
- 1659465458
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- ME0066592 (FL)
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
19 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
2,144 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 614 | $95 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 220 | $134 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 171 | $9 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 152 | $119 |
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 130 | $16 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 80 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 201 | 191 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 114 | 110 |
| Azithromycin | 87 | 82 |
| Alprazolam | 76 | 25 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 73 | 46 |
| Methylprednisolone | 70 | 68 |
| Tramadol Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$36 across 2 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
- 2006-10-03
- Last updated
- 2021-07-16
- Certified
- 2021-07-16
Frequently asked questions
- What is John O'Connor's NPI number?
- John O'Connor's National Provider Identifier (NPI) is 1659465458, 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 Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John O'Connor located?
- John O'Connor's practice location on file with NPPES is 13365 Overseas Hwy, Marathon, FL 33050.
- What is John O'Connor's phone number?
- The practice phone number listed in the NPPES registry for John O'Connor is (305) 743-9436.
- 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 (1659465458) is active in the NPPES registry as of the last update on 2021-07-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.