Rayyan Siddiqi, MD
NPI 1144563594 · Hospitalist Physician · Elmhurst, IL
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rayyan Siddiqi, MD is a Hospitalist Physician provider in Elmhurst, IL (NPI 1144563594).
Provider details
- NPI number
- 1144563594
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036140486 (IL)
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
13 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
1,522 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 50 Minutes99233 | 803 | $125 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 362 | $79 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 233 | $120 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 45 | $182 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 29 | $194 |
| Advance Care Planning, First 30 Minutes99497 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Insulin Lisprobrand: Humalog Kwikpen U-100 | 40 | — |
| Furosemide | 26 | 18 |
| Prednisone | 24 | 23 |
| Tramadol Hcl | 22 | 13 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 21 | 19 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 16 | 16 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-04-04
- Last updated
- 2018-10-24
Frequently asked questions
- What is Rayyan Siddiqi's NPI number?
- Rayyan Siddiqi's National Provider Identifier (NPI) is 1144563594, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rayyan Siddiqi's specialty?
- Rayyan Siddiqi is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Rayyan Siddiqi located?
- Rayyan Siddiqi's practice location on file with NPPES is 155 E Brush Hill Rd, Elmhurst, IL 60126.
- What is Rayyan Siddiqi's phone number?
- The practice phone number listed in the NPPES registry for Rayyan Siddiqi is (331) 221-8952.
- Does Rayyan Siddiqi accept Medicare?
- Rayyan Siddiqi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rayyan Siddiqi's NPI active?
- Yes — Rayyan Siddiqi's NPI (1144563594) is active in the NPPES registry as of the last update on 2018-10-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.