John Heymann, M.D.
NPI 1700106234 · Diagnostic Radiology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Heymann, M.D. is a Diagnostic Radiology Physician provider in Chicago, IL (NPI 1700106234).
Provider details
- NPI number
- 1700106234
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- BP2-0040977 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,916 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) |
|---|---|---|
| Ct Scan Head Or Brain Without Contrast70450 | 411 | $38 |
| X-Ray of Lower and Sacral Spine, 2-3 Views72100 | 286 | $11 |
| Ct Scan of Blood Vessels of Head With Contrast70496 | 131 | $80 |
| Ct Scan of Blood Vessels of Neck With Contrast70498 | 127 | $77 |
| Mri Scan of Lower Spinal Canal Without Contrast72148 | 123 | $69 |
| X-Ray of Upper Spine, 2-3 Views72040 | 118 | $11 |
| Ct Scan of Upper Spine Without Contrast |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$27 across 1 record (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
- 2010-06-07
- Last updated
- 2015-06-09
Frequently asked questions
- What is John Heymann's NPI number?
- John Heymann's National Provider Identifier (NPI) is 1700106234, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Heymann's specialty?
- John Heymann is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Heymann located?
- John Heymann's practice location on file with NPPES is 676 N Saint Clair St, Chicago, IL 60611-2927.
- What is John Heymann's phone number?
- The practice phone number listed in the NPPES registry for John Heymann is (312) 695-1992.
- Does John Heymann accept Medicare?
- John Heymann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Heymann's NPI active?
- Yes — John Heymann's NPI (1700106234) is active in the NPPES registry as of the last update on 2015-06-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.