Owen O'Neill, MD
NPI 1447290119 · Internal Medicine Physician · Sleepy Hollow, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Owen O'Neill, MD is a Internal Medicine Physician provider in Sleepy Hollow, NY (NPI 1447290119).
Provider details
- NPI number
- 1447290119
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- License
- 176762 (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
20 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
295 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) |
|---|---|---|
| Management of Oxygen Chamber Therapy99183 | 284 | $120 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 11 | $191 |
Typical Medicare-allowed amounts for these services range $120–$191 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-08
- Last updated
- 2007-07-08
Frequently asked questions
- What is Owen O'Neill's NPI number?
- Owen O'Neill's National Provider Identifier (NPI) is 1447290119, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Owen O'Neill's specialty?
- Owen O'Neill is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Owen O'Neill located?
- Owen O'Neill's practice location on file with NPPES is 777 N Broadway, Sleepy Hollow, NY 10591-1000.
- What is Owen O'Neill's phone number?
- The practice phone number listed in the NPPES registry for Owen O'Neill is (914) 333-0034.
- Does Owen O'Neill accept Medicare?
- Owen O'Neill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Owen O'Neill's NPI active?
- Yes — Owen O'Neill's NPI (1447290119) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.