Mary Gannon, M.D.,C.A.D.C.
NPI 1235268541 · Addiction Medicine (Psychiatry & Neurology) Physician · Oak Brook, IL
Mary Gannon, M.D.,C.A.D.C. is a Addiction Medicine (Psychiatry & Neurology) Physician provider in Oak Brook, IL (NPI 1235268541).
Provider details
- NPI number
- 1235268541
- Entity type
- Individual
- Primary specialty
- Addiction Medicine (Psychiatry & Neurology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.,C.A.D.C.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 036068239 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$15 across 1 record (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
- 2007-03-04
- Last updated
- 2011-05-17
Frequently asked questions
- What is Mary Gannon's NPI number?
- Mary Gannon's National Provider Identifier (NPI) is 1235268541, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Gannon's specialty?
- Mary Gannon is listed in the NPPES registry with a primary specialty of Addiction Medicine (Psychiatry & Neurology) Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Gannon located?
- Mary Gannon's practice location on file with NPPES is 2625 Butterfield Rd, Oak Brook, IL 60523-1234.
- What is Mary Gannon's phone number?
- The practice phone number listed in the NPPES registry for Mary Gannon is (630) 981-4886.
- Is Mary Gannon's NPI active?
- Yes — Mary Gannon's NPI (1235268541) is active in the NPPES registry as of the last update on 2011-05-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.