Alexander O'Hara, MD
NPI 1740922533 · Hematology & Oncology Physician · Maywood, IL
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexander O'Hara, MD is a Hematology & Oncology Physician provider in Maywood, IL (NPI 1740922533).
Provider details
- NPI number
- 1740922533
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-04-11
- Last updated
- 2026-04-19
- Certified
- 2026-04-19
Frequently asked questions
- What is Alexander O'Hara's NPI number?
- Alexander O'Hara's National Provider Identifier (NPI) is 1740922533, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander O'Hara's specialty?
- Alexander O'Hara is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Alexander O'Hara located?
- Alexander O'Hara's practice location on file with NPPES is 2160 S 1st Ave, Maywood, IL 60153-3328.
- What is Alexander O'Hara's phone number?
- The practice phone number listed in the NPPES registry for Alexander O'Hara is (708) 216-7766.
- Does Alexander O'Hara accept Medicare?
- Alexander O'Hara is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexander O'Hara's NPI active?
- Yes — Alexander O'Hara's NPI (1740922533) is active in the NPPES registry as of the last update on 2026-04-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.