Omar Ahmed, M.D.
NPI 1639312556 · Critical Care Medicine (Internal Medicine) Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Critical Care (intensivists) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Omar Ahmed, M.D. is a Critical Care Medicine (Internal Medicine) Physician provider in Chicago, IL (NPI 1639312556).
Provider details
- NPI number
- 1639312556
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 070514 (GA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
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
1,900 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 Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 1,305 | $110 |
| Subsequent Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, at Least 45 Minutes99310 | 239 | $156 |
| Critical Care, First 30-74 Minutes99291 | 207 | $217 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 85 | $120 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 43 | $76 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More |
Practice location
Mailing address
Additional practice locations (1)
- 77 N Airlite StElgin, IL 60123-4912Phone: (847) 695-3200
Registry dates
- Enumerated
- 2009-04-07
- Last updated
- 2024-10-24
- Certified
- 2024-10-24
Frequently asked questions
- What is Omar Ahmed's NPI number?
- Omar Ahmed's National Provider Identifier (NPI) is 1639312556, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Omar Ahmed's specialty?
- Omar Ahmed is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Omar Ahmed located?
- Omar Ahmed's practice location on file with NPPES is 2222 W Division St, Chicago, IL 60622-2717.
- What is Omar Ahmed's phone number?
- The practice phone number listed in the NPPES registry for Omar Ahmed is (877) 737-4636.
- Does Omar Ahmed accept Medicare?
- Omar Ahmed is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Omar Ahmed's NPI active?
- Yes — Omar Ahmed's NPI (1639312556) is active in the NPPES registry as of the last update on 2024-10-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.