Michael Ault, MD
NPI 1851371165 · Anesthesiology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Ault, MD is a Anesthesiology Physician provider in Chicago, IL (NPI 1851371165).
Provider details
- NPI number
- 1851371165
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
186 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 50 | $84 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 27 | $53 |
| Critical Care, First 30-74 Minutes99291 | 21 | $229 |
| Anesthesia for X-Ray Or Radiation Therapy01922 | 18 | $112 |
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 18 | $47 |
| Anesthesia for Procedure to Correct Abnormal Heart Rhythm00410 | 16 | $63 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-20
- Last updated
- 2007-12-13
Frequently asked questions
- What is Michael Ault's NPI number?
- Michael Ault's National Provider Identifier (NPI) is 1851371165, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Ault's specialty?
- Michael Ault is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Ault located?
- Michael Ault's practice location on file with NPPES is 680 N Lake Shore Dr, Chicago, IL 60611-4546.
- What is Michael Ault's phone number?
- The practice phone number listed in the NPPES registry for Michael Ault is (312) 695-9797.
- Does Michael Ault accept Medicare?
- Michael Ault is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Ault's NPI active?
- Yes — Michael Ault's NPI (1851371165) is active in the NPPES registry as of the last update on 2007-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.