Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Daniel John O'Neill, MD

Individual provider Anesthesiology Physician · NPI 1265775837

Dr. Daniel John O'Neill, MD practises Anesthesiology in New York, New York. Qualified in 2013, 13 years ago. Practices with Dupage Valley Anesthesiologists Ltd, a 62-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
13
Licensed in
PA
In the registry since
2013
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

535 E 70th St
New York, NY 10021
Phone: (212) 606-1036
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 3401 Civic Center Blvd, Philadelphia, PA 19104 — (215) 590-4557
  • 3401 Civic Center Blvd, Philadelphia, PA 19104 — (215) 590-4557

Specialties & licences

Pediatric Anesthesiology Physician (primary) Taxonomy 207LP3000X · Licence MT213287 (PA)
Anesthesiology Physician Taxonomy 207L00000X · Licence MT213287 (PA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1265775837
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 2, 2013
Last updated in NPPESSeptember 4, 2019

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice Dupage Valley Anesthesiologists Ltd — 62 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients109
Services billed 148 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Dupage Valley Anesthesiologists Ltd

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 62 clinicians in the practice; 12 are shown here.

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