Ronald Workman, M.D.
NPI 1336305119 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ronald Workman, M.D. is a Internal Medicine Physician provider in Chicago, IL (NPI 1336305119).
Provider details
- NPI number
- 1336305119
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 125055107 (IL)
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
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
416 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 | 273 | $84 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 92 | $140 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 17 | $144 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 12 | $126 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 11 | $185 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-07-31
- Last updated
- 2008-07-31
Frequently asked questions
- What is Ronald Workman's NPI number?
- Ronald Workman's National Provider Identifier (NPI) is 1336305119, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ronald Workman's specialty?
- Ronald Workman is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ronald Workman located?
- Ronald Workman's practice location on file with NPPES is 2801 N Oakley Ave Apt 103, Chicago, IL 60618-8092.
- What is Ronald Workman's phone number?
- The practice phone number listed in the NPPES registry for Ronald Workman is (773) 677-6898.
- Does Ronald Workman accept Medicare?
- Ronald Workman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ronald Workman's NPI active?
- Yes — Ronald Workman's NPI (1336305119) is active in the NPPES registry as of the last update on 2008-07-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.