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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. OWEN JOSEPH O'NEILL MD
NPI 1447290119
Internal Medicine in Sleepy Hollow, NY

Active since June 08, 2006PECOS Enrolled
777 N BROADWAY, SUITE 310, SLEEPY HOLLOW, NY 10591(914) 333-0034(912) 333-0046 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Owen Joseph O'neill Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. OWEN JOSEPH O'NEILL MD (NPI 1447290119) is an individual internal medicine provider in Sleepy Hollow, New York, licensed in New York (176762) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Phelps Hospital, and is a graduate of Other (1987).

NPPES Registry Identity

NPI1447290119
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. OWEN JOSEPH O'NEILLCredential: MD
Location Address777 N BROADWAY, SUITE 310Sleepy Hollow, NY 10591-1000
Mailing Address777 N Broadway, Suite 310Sleepy Hollow, NY 10591-1000 · (914) 333-0034 · Fax (912) 333-0046
Phone(914) 333-0034
Fax(912) 333-0046
Sole ProprietorNo
Medical School CMSOtherGraduated 1987
Enumeration DateJune 8, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1447290119 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NY · 176762
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
777 N BROADWAY, Sleepy Hollow, NY 10591
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Owen Joseph O'neill Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID840278073
PECOS Enrollment IDI20040713000601
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Management of oxygen chamber therapy 99183
Oxygen chamber therapy involves breathing pure oxygen in a pressurized room or tube. It's used to treat various conditions like wounds that won't heal due to diabetes or radiation injury. In this therapy, your body's tissues get more oxygen to promote healing and fight infection.
284 services18 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
11 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Phelps Hospital

Acute Care Hospitals · Sleepy Hollow, NY
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330261
Location701 N BroadwaySleepy Hollow, NY 10591 · Westchester County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10591 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$154.28 typical visit price
range $67.40 – $203.53
Typical copayment $38.57 (range $16.85 – $50.88)
Most-billed visit code 99204
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JULIETA STUMPF MS, CCC-SLP
Speech-Language Pathologist
777 N BROADWAY
SLEEPY HOLLOW, NY 10591
Westchester County (914) 366-3010
PHILIP C CARON MD
Internal Medicine (Medical Oncology)
777 N BROADWAY
SLEEPY HOLLOW, NY 10591
Westchester County (212) 639-2000
DR. ANJALI ANKOLEKAR MD
Obstetrics & Gynecology
777 N BROADWAY, SUITE 308
SLEEPY HOLLOW, NY 10591
Westchester County (914) 631-0908
DR. LOUIS ANTHONY BUZZEO MD
Internal Medicine (Nephrology)
777 N BROADWAY, SUITE 203
SLEEPY HOLLOW, NY 10591
Westchester County (914) 332-9100
BORIS A MUELLER MD
Radiology (Radiation Oncology)
777 N BROADWAY
SLEEPY HOLLOW, NY 10591
Westchester County (212) 639-2000
WESTCHESTER INTERNAL MEDICINE PC
Internal Medicine
777 N BROADWAY, SUITE 310
SLEEPY HOLLOW, NY 10591
Westchester County (914) 333-0034
HUDSON VALLEY SURGICAL GROUP, LLP
Surgery
777 N BROADWAY, SUITE 204
SLEEPY HOLLOW, NY 10591
Westchester County (914) 631-3660
PHELPS MEMORIAL HOSPITAL
General Acute Care Hospital
777 N BROADWAY, SUITE 303
SLEEPY HOLLOW, NY 10591
Westchester County (914) 366-3011

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Owen O'neill's NPI number?

The NPI number for Owen O'neill is 1447290119. It was assigned to this individual provider in the NPPES registry on June 8, 2006.

Where is Owen O'neill located?

Owen O'neill practices at 777 N Broadway Suite 310, Sleepy Hollow, NY 10591. The listed phone number is (914) 333-0034.

What is Owen O'neill's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Owen O'neill enrolled in Medicare?

Yes. Owen O'neill is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Owen O'neill affiliated with any hospitals?

According to CMS data, Owen O'neill is affiliated with Phelps Hospital.

When was this NPI record last updated?

The NPPES record for Owen O'neill was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.