Khaja Siraj, D.O.
NPI 1568993657 · Critical Care Medicine (Internal Medicine) Physician · Downers Grove, IL
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Khaja Siraj, D.O. is a Critical Care Medicine (Internal Medicine) Physician provider in Downers Grove, IL (NPI 1568993657).
Provider details
- NPI number
- 1568993657
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 125.070904 (IL)
Specialties & taxonomies
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
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
86 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 | 74 | $216 |
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 12 | $42 |
Typical Medicare-allowed amounts for these services range $42–$216 (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 (3)
- 2650 Ridge Ave.Im Hospitalists Ste 4210Evanston, IL 60201Phone: (847) 570-1010Fax: (847) 733-5108
- 1775 Dempster StPark Ridge, IL 60068-1143Phone: (847) 723-2210Fax: (847) 723-6987
- 1775 Ballard RdNesset Internal MedicinePark Ridge, IL 60068-1005Phone: (847) 318-9340
Registry dates
- Enumerated
- 2017-03-21
- Last updated
- 2024-07-08
- Certified
- 2024-07-08
Frequently asked questions
- What is Khaja Siraj's NPI number?
- Khaja Siraj's National Provider Identifier (NPI) is 1568993657, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Khaja Siraj's specialty?
- Khaja Siraj is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Khaja Siraj located?
- Khaja Siraj's practice location on file with NPPES is 3815 Highland Avenue, Downers Grove, IL 60515-1500.
- What is Khaja Siraj's phone number?
- The practice phone number listed in the NPPES registry for Khaja Siraj is (708) 283-5500.
- Does Khaja Siraj accept Medicare?
- Khaja Siraj is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Khaja Siraj's NPI active?
- Yes — Khaja Siraj's NPI (1568993657) is active in the NPPES registry as of the last update on 2024-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.