Dr. William Patrick O'Neill, MD
- Medicare services, 2024
- 261
- Medicare patients, 2024
- 106
- Hospital affiliations
- 3
- Medical groups
- 4
- State license
- 1
- Practice address
- 201 14th St SW, Largo, FL 33770
- Practice phone
- Call (727) 588-5200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. O'Neill's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. William Patrick O'Neill is a pathologist in Largo, Florida
Dr. O'Neill practices at HCA Florida Largo Hospital in Largo, Florida, part of HCA Healthcare.
Dr. O'Neill's NPI, 1922118900, was assigned on August 30, 2006. Dr. O'Neill holds Indiana license 01061109A.
- NPI
- 1922118900NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2062442155
- NPI enumeration date
- August 30, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (727) 588-5200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Patrick O'Neill practices at HCA Florida Largo Hospital in Largo, Florida
Dr. O'Neill's primary practice is HCA Florida Largo Hospital, at 201 14th St SW, Largo, FL 33770 in Pinellas County. The practice phone is (727) 588-5200.
- HCA Florida Largo Hospital201 14th St SW, Largo, FL 33770 · Pinellas CountyPhone(727) 588-5200
Source: Dmand AI Affiliation Data
Dr. William Patrick O'Neill is affiliated with 3 sites of care and 4 medical groups
Dr. O'Neill's primary practice is HCA Florida Largo Hospital in Largo, Florida, part of HCA Healthcare. Dr. O'Neill is also affiliated with Union Hospital. The medical group on file is Integrated Regional Laboratories. Dmand AI also links Dr. O'Neill to 1 more hospital and 3 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Patrick O'Neill's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Neill practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| HCA Florida Largo Hospital | Available with a free account |
| +2 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Patrick O'Neill is one of 107 pathologists in Florida
Anatomic pathology is Dr. O'Neill's primary specialty in the NPI Registry, under taxonomy code 207ZP0101X. Dr. O'Neill is licensed in Indiana.
Specialties and state licenses
- Anatomic pathology, IndianaPrimary
Pathologists near Dr. O'Neill
Counts of pathologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. William Patrick O'Neill billed Medicare for 261 services in 2024
CMS data shows 261 Medicare services from Dr. O'Neill across 6 procedure codes in 2024, for 106 Medicare patients. Medicare paid $6,069 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. O'Neill's Medicare services by type, 2018 to 2024
- 2018
- 2024
- Lab and pathology
- 2018: 1,4482024: 26182%
Dr. O'Neill compared with the Florida median for pathologists, 2024
- Dr. O'Neill
- Florida median
- Medicare services
- 261vs 1,17878% below
- Medicare patients
- 106vs 40474% below
Medians across 96 pathologists in Florida with Dmand AI profiles that report each measure.
Dr. O'Neill's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. O'Neill and other pathologists in Florida.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Patrick O'Neill treated 106 Medicare patients in 2024, average age 75
CMS counts 106 Medicare patients who saw Dr. O'Neill in 2024. The largest group is 75 to 84, with 44 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 20% are also on Medicaid. Their average risk score is 1.99, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. O'Neill's median patient age at 61, with 45% women.
Dr. O'Neill's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. O'Neill's Medicare patients by sex, 2024
- Women6662%
- Men4038%
Chronic conditions among Dr. O'Neill's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Diabetes49%
- Chronic kidney disease44%
- Ischemic heart disease41%
- Mood disorders41%
- Anxiety40%
Share of Medicare patients with each condition. A patient can have several.
Dr. O'Neill's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women45%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. William Patrick O'Neill takes part in Medicare
Dr. O'Neill accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Sources for Dr. William Patrick O'Neill's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. William Patrick O'Neill
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. William Patrick O'Neill's NPI number?
Dr. William Patrick O'Neill's NPI number is 1922118900. It was assigned on August 30, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William Patrick O'Neill?
Dr. William Patrick O'Neill is a pathologist in Largo, Florida. The primary specialty in the NPI Registry is Anatomic Pathology Physician (taxonomy code 207ZP0101X).
Where does Dr. William Patrick O'Neill practice?
Dr. O'Neill practices at 201 14th St SW, Largo, FL 33770. Dr. O'Neill's primary practice is HCA Florida Largo Hospital in Largo, Florida, part of HCA Healthcare. Dmand AI also links Dr. O'Neill to 1 hospital and 3 medical groups.
What is Dr. William Patrick O'Neill's office phone number?
The practice phone on file for Dr. O'Neill is (727) 588-5200.
What is Dr. William Patrick O'Neill's medical license number?
Dr. O'Neill holds Indiana license 01061109A.
Which hospitals is Dr. William Patrick O'Neill affiliated with?
Dr. O'Neill practices at HCA Florida Largo Hospital in Largo, Florida. Dr. O'Neill is also affiliated with Union Hospital. Dmand AI links Dr. O'Neill to 1 more hospital.
What medical group is Dr. William Patrick O'Neill part of?
Dr. O'Neill is linked to Integrated Regional Laboratories. Dmand AI links Dr. O'Neill to 3 more medical groups.
Does Dr. William Patrick O'Neill accept Medicare?
Yes. CMS data shows Dr. O'Neill billed Medicare for 261 services in 2024, and Dr. O'Neill accepts Medicare assignment.
How many Medicare patients does Dr. William Patrick O'Neill see?
CMS counts 106 Medicare patients who saw Dr. O'Neill in 2024, with an average age of 75.
What services does Dr. William Patrick O'Neill bill to Medicare?
In 2024, Dr. O'Neill's most billed Medicare services were lab and pathology test (88305), lab and pathology test (88341) and lab and pathology test (88112).
How long has Dr. William Patrick O'Neill been practicing?
Dr. O'Neill graduated from medical school in 1987, 39 years ago.
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