Isis Duran, MD
NPI 1891943619 · Critical Care Medicine (Internal Medicine) Physician · Oak Lawn, IL
Enrolled with Medicare as Practitioner - Critical Care (intensivists) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Isis Duran, MD is a Critical Care Medicine (Internal Medicine) Physician provider in Oak Lawn, IL (NPI 1891943619).
Provider details
- NPI number
- 1891943619
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 036123529 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
137 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 100 | $220 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 37 | $81 |
Typical Medicare-allowed amounts for these services range $81–$220 (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)
- 25 N. Winfield Rd.Winfield, IL 60190-1295Phone: (630) 933-4700Fax: (630) 933-4427
Registry dates
- Enumerated
- 2008-09-04
- Last updated
- 2024-10-23
- Certified
- 2024-10-23
Frequently asked questions
- What is Isis Duran's NPI number?
- Isis Duran's National Provider Identifier (NPI) is 1891943619, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Isis Duran's specialty?
- Isis Duran is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Isis Duran located?
- Isis Duran's practice location on file with NPPES is 4440 W 95th St, Oak Lawn, IL 60453-2600.
- What is Isis Duran's phone number?
- The practice phone number listed in the NPPES registry for Isis Duran is (708) 283-5500.
- Does Isis Duran accept Medicare?
- Isis Duran is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Isis Duran's NPI active?
- Yes — Isis Duran's NPI (1891943619) is active in the NPPES registry as of the last update on 2024-10-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.