Bartholomew Olash, MD
NPI 1164164299 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Bartholomew Olash, MD is a Internal Medicine Physician provider in Chicago, IL (NPI 1164164299).
Provider details
- NPI number
- 1164164299
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 125.083913 (IL)
Specialties & taxonomies
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
100% 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
- 2022-04-09
- Last updated
- 2024-05-24
- Certified
- 2024-05-24
Frequently asked questions
- What is Bartholomew Olash's NPI number?
- Bartholomew Olash's National Provider Identifier (NPI) is 1164164299, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Bartholomew Olash's specialty?
- Bartholomew Olash is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Bartholomew Olash located?
- Bartholomew Olash's practice location on file with NPPES is 1620 W Harrison St, Chicago, IL 60612-3801.
- What is Bartholomew Olash's phone number?
- The practice phone number listed in the NPPES registry for Bartholomew Olash is (502) 558-6161.
- Does Bartholomew Olash accept Medicare?
- Bartholomew Olash is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Bartholomew Olash's NPI active?
- Yes — Bartholomew Olash's NPI (1164164299) is active in the NPPES registry as of the last update on 2024-05-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.