DR. WILLIAM W ONEILL MD
NPI 1881676435
Internal Medicine - Cardiovascular Disease in Naples, FL

Q: What is William Oneill's NPI number?

The NPI number for William Oneill is 1881676435. It was assigned to this individual provider in the NPPES registry on November 18, 2005.

Q: What is William Oneill's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for William Oneill was last updated on April 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.

Active since November 18, 2005PECOS Enrolled

399 9TH ST N STE 300, NAPLES, FL 34102(239) 624-4299(239) 624-8856 Get Directions Write a Review

NPPES record last updated: April 18, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. William W Oneill Md NPPES

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

DR. WILLIAM W ONEILL MD (NPI 1881676435) is an individual cardiovascular disease provider in Naples, Florida, licensed in Florida (ME173217) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS and maintains a secondary practice location in Detroit.

NPPES Registry Identity

NPI1881676435

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameDR. WILLIAM W ONEILLCredential: MD

Location Address399 9TH ST N STE 300Naples, FL 34102-5820

Mailing Address2799 W Grand Blvd, K14 Office B1417Detroit, MI 48202-2608 · (313) 916-1878 · Fax (313) 916-2819

Phone(239) 624-4299

Fax(239) 624-8856

Sole ProprietorYes

Enumeration DateNovember 18, 2005

Last NPPES UpdateApril 18, 2025

NPPES CertifiedApril 18, 2025

✔ NPI 1881676435 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

Licenses✔ Licensed in FL · ME173217✔ Licensed in MI · 4301039889

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

Also ListedInternal Medicine · Interventional CardiologyTaxonomy 207RI0011X · License ME0097328 (FL), 4301039889 (MI)

399 9TH ST N STE 300, Naples, FL 34102

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Secondary Practice Location 1

Location 12799 W Grand Blvd, K14 Office B1417Detroit, MI 48202-2608 · Phone (313) 916-1878 · Fax (313) 916-2819

Other Identifiers 2

Medicaid2772965-00FL

OtherAA352XFL · Medicare Id-type Unspecified

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, McLaren Health Plan Community and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. William W Oneill Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 3

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

16 services16 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

13 services13 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 34102 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

$135.56 typical visit price

range $58.56 – $179.05

Typical copayment $33.89 (range $14.64 – $44.76)

Most-billed visit code 99204

Established Patient

$73.00 typical visit price

range $18.44 – $144.68

Typical copayment $18.25 (range $4.61 – $36.17)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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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.

JULIANA MADISON APRN

Nurse Practitioner (Family)