Active NPI 1265445233 Individual Practitioner Male Practitioner

Dr. John H Oneill , DO

Internal Medicine • Newark, DE

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. John Oneill, DO is a certified Internal Medicine practicing in Newark, DE. With approximately 40 years of clinical experience since graduating from Des Moines University Of Osteopathic Medicine And Health Sciences in 1986, Dr. Oneill delivers high-quality medical care to the local community at 4755 OGLETOWN STANTON RD STE 5A43.

Dr. Oneill is affiliated with Christiana Care Health Services Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include subsequent hospital care with moderate levelof medical decision making, if using time, at least, hospital discharge day management, more than, hospital discharge day management. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

4755 Ogletown Stanton Rd Ste 5a43

Newark, DE 197185854

Telephone 3026230188

Associated Practice Facility / Clinic

🏢 Christiana Care Health System Facility NPI 1083192298

Medicare Profile & Education

Medical School

Des Moines University Of Osteopathic Medicine And Health Sciences

Graduation Year

1986

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Newark, DE

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

40 Yrs +23.4 yrs vs City Avg

City Avg: 16.6 Yrs

State Avg: 25.8 Yrs

Regional Practice Density

243 Specialists

Practicing in Newark, DE (625 Statewide)

Telehealth Adoption Rate

11.9% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

64.1% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Oneill (40 Years) 40 Yrs

Newark Specialty Average (16.6 Years) 16.6 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	671	274	$202.46	$76.44
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	139	115	$289.38	$114.63
99239 Hospital discharge day management, more than 30 minutes	87	87	$297.86	$111.31
99238 Hospital discharge day management, 30 minutes or less	63	63	$204.58	$78.70
99231 Follow-up hospital inpatient care per day, typically 15 minutes	37	25	$112.36	$47.99
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	27	27	$557.56	$167.86

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	813	347	$196.30	$79.13
99238 Hospital discharge day management, 30 minutes or less	106	104	$198.03	$81.17
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	88	65	$280.82	$119.50
99231 Follow-up hospital inpatient care per day, typically 15 minutes	76	49	$109.51	$49.85
99239 Hospital discharge day management, more than 30 minutes	56	56	$289.73	$115.09
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	23	23	$545.21	$174.16

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	680	277	$167.71	$72.02
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	134	70	$245.01	$103.62
99238 Hospital discharge day management, 30 minutes or less	76	76	$170.12	$72.83
99239 Hospital discharge day management, more than 30 minutes	34	34	$251.59	$106.48
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	13	13	$464.38	$199.78

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	755	298	$155.00	$72.89
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	162	89	$223.00	$103.97
99238 Hospital discharge day management, 30 minutes or less	108	106	$156.00	$73.15
99239 Hospital discharge day management, more than 30 minutes	44	43	$231.00	$108.53
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	11	11	$437.00	$203.95

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	615	257	$155.00	$74.76
99238 Hospital discharge day management, 30 minutes or less	105	105	$156.00	$75.78
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	74	50	$223.00	$107.03
99231 Follow-up hospital inpatient care per day, typically 15 minutes	49	30	$84.00	$40.43
99239 Hospital discharge day management, more than 30 minutes	37	36	$231.00	$110.97
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	18	18	$297.00	$143.47

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	716	295	$155.00	$74.64
99231 Follow-up hospital inpatient care per day, typically 15 minutes	188	84	$84.00	$40.47
99238 Hospital discharge day management, 30 minutes or less	161	161	$156.00	$74.75
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	60	48	$223.00	$106.78
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	27	26	$437.00	$207.75
99239 Hospital discharge day management, more than 30 minutes	26	26	$231.00	$110.04
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	17	17	$297.00	$140.75

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	660	290	$155.10	$72.85
99231 Follow-up hospital inpatient care per day, typically 15 minutes	172	69	$84.00	$39.76
99238 Hospital discharge day management, 30 minutes or less	130	127	$156.00	$74.01
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	72	60	$223.00	$106.19
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	29	29	$437.00	$206.58
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	28	28	$297.00	$139.36
99239 Hospital discharge day management, more than 30 minutes	23	23	$231.00	$109.74
99217 Hospital observation care on day of discharge	14	14	$156.00	$74.63

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	691	298	$155.00	$70.82
99231 Follow-up hospital inpatient care per day, typically 15 minutes	176	82	$84.00	$38.74
99238 Hospital discharge day management, 30 minutes or less	104	103	$156.00	$71.57
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	72	72	$437.00	$200.05
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	56	49	$223.00	$102.95
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	27	26	$297.00	$129.81
99239 Hospital discharge day management, more than 30 minutes	21	21	$231.00	$106.08
99217 Hospital observation care on day of discharge	16	16	$156.00	$72.10

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License DE C20003347

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.

Hospitalist

NUCC Taxonomy Code: 208M00000X

State License DE C2-0003347

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

1689862492 (DE)

Hospital & Practice Group Affiliations

Christiana Care Health Services Inc

501 W 14th St, Wilmington, DE 198011013

Christiana Care Health Services Inc

1401 Foulk Rd, Wilmington, DE 198032764

Christiana Care Health Services Inc

501 W 14th St Wilmington Hospital, Wilmington, DE 198011013

Christiana Care Health Services Inc

4755 Ogletown Stanton Rd, Newark, DE 197182200

Christiana Care Health Services Inc

501 W 14th St Fl, Wilmington, DE 198011013

Phone: 3023201300

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

40 Associated Practitioners

Dr. Shruti Puri , MD

Internal Medicine - Infectious Disease

NPI 1003234451

Doctor of Medicine (M.D.)

Dr. Luviza Santos , MD

Internal Medicine

NPI 1003869827

Doctor of Medicine (M.D.)

Dr. Lucinda Li , DO

Internal Medicine

NPI 1013406016

Doctor of Osteopathic Medicine (D.O.)

Dr. Brieanna Bivens , MD

Hospitalist

NPI 1013413541

Doctor of Medicine (M.D.)

Katie Rubin , FNP

Nurse Practitioner

NPI 1013433978

Family Nurse Practitioner

Christos Arhontakis , PA-C

Physician Assistant

NPI 1013494855

Physician Assistant (Certified)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

9 Historical Events

📍

Updated Practice Location September 24, 2018

Registered at 4755 OGLETOWN STANTON RD STE 5A43, NEWARK, DE 197185854 (Tel: 3026230188)

📍

Updated Business Mailing Address September 24, 2018

Registered at 200 HYGEIA DR STE 2300, NEWARK, DE 197132049 (Tel: 3026237113)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) September 24, 2018

Hospitalist (License #C2-0003347 in DE)

✅

NPI Profile Active October 28, 2010

NPI status registered as active in NPPES database

📍

Updated Practice Location October 28, 2010

Registered at 222 CARTER DR, SUITE103, MIDDLETOWN, DE 197095854 (Tel: 3023766100)

📍

Updated Business Mailing Address October 28, 2010

Registered at 222 CARTER DR, SUITE103, MIDDLETOWN, DE 197095854 (Tel: 3023766100)

👤

Provider Name / Credentials Updated October 28, 2010

Recorded as JOHN ONEILL, DO

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) October 28, 2010

Internal Medicine (License #C20003347 in DE)

🟢

Initial NPI Registration & Enumeration August 14, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

0 Reviews

No patient reviews submitted yet for Dr. John Oneill. Be the first to share your experience!

Only verified registered users can submit ratings, post feedback, and upload facility photos.

NPI Administrative Meta

NPI Number: 1265445233

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: August 14, 2006

Last Update: September 24, 2018

Sole Proprietor: No

Update or Correct Profile

Mailing Address

200 Hygeia Dr Ste 2300

Newark, DE 197132049

Phone: 3026237113

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.