John Downing, DO
NPI 1073889242 · Emergency Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Downing, DO is a Emergency Medicine Physician provider in Chicago, IL (NPI 1073889242).
Provider details
- NPI number
- 1073889242
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 02004823A (IN)
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
14 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
578 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 319 | $161 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 131 | $111 |
| Critical Care, First 30-74 Minutes99291 | 114 | $195 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 14 | $60 |
Typical Medicare-allowed amounts for these services range $60–$195 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Warfarin Sodium | 711 | 256 |
| Enoxaparin Sodium | 57 | 29 |
| Warfarin Sodiumbrand: Jantoven | 56 | 21 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 34 | 33 |
| Cephalexin | 27 | 27 |
| Ibuprofen | 18 | 18 |
| Prednisone | 15 |
Practice location
Mailing address
Additional practice locations (1)
- 5454 Hohman AveHammond, IN 46320Phone: (219) 932-2300Fax: (219) 852-2502
Registry dates
- Enumerated
- 2012-04-01
- Last updated
- 2023-12-21
- Certified
- 2023-12-21
Frequently asked questions
- What is John Downing's NPI number?
- John Downing's National Provider Identifier (NPI) is 1073889242, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Downing's specialty?
- John Downing is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Downing located?
- John Downing's practice location on file with NPPES is 836 W Wellington Ave, Chicago, IL 60657-5147.
- What is John Downing's phone number?
- The practice phone number listed in the NPPES registry for John Downing is (773) 975-1600.
- Does John Downing accept Medicare?
- John Downing is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Downing's NPI active?
- Yes — John Downing's NPI (1073889242) is active in the NPPES registry as of the last update on 2023-12-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.