John Hartnett
NPI 1285137109 · Anesthesiology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Hartnett is a Anesthesiology Physician provider in Chicago, IL (NPI 1285137109).
Provider details
- NPI number
- 1285137109
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
8 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
183 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 46 | $78 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 29 | $72 |
| Anesthesia for Exam of Colon Using an Endoscope00812 | 26 | $57 |
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 24 | $46 |
| Anesthesia for Procedure on Small and Large Bowel Using an Endoscope00813 | 19 | $87 |
| Anesthesia for Procedure to Assess Heart Electrical Activity00537 | 14 | $304 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$184 across 7 records (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
- 2018-03-16
- Last updated
- 2018-12-27
Frequently asked questions
- What is John Hartnett's NPI number?
- John Hartnett's National Provider Identifier (NPI) is 1285137109, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Hartnett's specialty?
- John Hartnett is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Hartnett located?
- John Hartnett's practice location on file with NPPES is 251 E Huron St, Chicago, IL 60611-2908.
- What is John Hartnett's phone number?
- The practice phone number listed in the NPPES registry for John Hartnett is (312) 926-2000.
- Does John Hartnett accept Medicare?
- John Hartnett is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Hartnett's NPI active?
- Yes — John Hartnett's NPI (1285137109) is active in the NPPES registry as of the last update on 2018-12-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.