Adam Mikolajczyk, M.D.
NPI 1275829798 · Gastroenterology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Adam Mikolajczyk, M.D. is a Gastroenterology Physician provider in Chicago, IL (NPI 1275829798).
Provider details
- NPI number
- 1275829798
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036.135065 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
36 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 50 Minutes99233 | 36 | $123 |
Typical Medicare-allowed amounts for these services range $123–$123 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 180 Harvester DrSuite 110Burr Ridge, IL 60527-7594Phone: (773) 702-1150
Registry dates
- Enumerated
- 2011-06-22
- Last updated
- 2019-03-22
Frequently asked questions
- What is Adam Mikolajczyk's NPI number?
- Adam Mikolajczyk's National Provider Identifier (NPI) is 1275829798, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Adam Mikolajczyk's specialty?
- Adam Mikolajczyk is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Adam Mikolajczyk located?
- Adam Mikolajczyk's practice location on file with NPPES is 1801 W Taylor St Ste 1b, Chicago, IL 60612-4795.
- What is Adam Mikolajczyk's phone number?
- The practice phone number listed in the NPPES registry for Adam Mikolajczyk is (312) 996-7598.
- Does Adam Mikolajczyk accept Medicare?
- Adam Mikolajczyk is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Adam Mikolajczyk's NPI active?
- Yes — Adam Mikolajczyk's NPI (1275829798) is active in the NPPES registry as of the last update on 2019-03-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.