John Abad, M.D.
NPI 1578722336 · Surgical Oncology Physician · Warrenville, IL
Enrolled with Medicare as Practitioner - Surgical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Abad, M.D. is a Surgical Oncology Physician provider in Warrenville, IL (NPI 1578722336).
Provider details
- NPI number
- 1578722336
- Entity type
- Individual
- Primary specialty
- Surgical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036138955 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
370 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 89 | $81 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 72 | $136 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 50 | $125 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 49 | $231 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 36 | $191 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'S |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,541 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-06-06
- Last updated
- 2017-05-11
Frequently asked questions
- What is John Abad's NPI number?
- John Abad's National Provider Identifier (NPI) is 1578722336, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Abad's specialty?
- John Abad is listed in the NPPES registry with a primary specialty of Surgical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is John Abad located?
- John Abad's practice location on file with NPPES is 4405 Weaver Pkwy, Warrenville, IL 60555-3269.
- What is John Abad's phone number?
- The practice phone number listed in the NPPES registry for John Abad is (630) 352-5420.
- Does John Abad accept Medicare?
- John Abad is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Abad's NPI active?
- Yes — John Abad's NPI (1578722336) is active in the NPPES registry as of the last update on 2017-05-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.