Quick answers
- Does Hadi Siddiqui accept Medicare assignment?
- Yes. Medicare's clinician data says Hadi Siddiqui accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Hadi Siddiqui see?
- In 2024, CMS data shows 257 Original Medicare patients and 490 services for Hadi Siddiqui. This counts Original Medicare only and measures volume, not quality.
- What is Hadi Siddiqui's NPI number?
- 1639361413. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Hadi Siddiqui, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 257 |
|---|---|
| Services billed to Medicare | 490 |
| Different services or procedures | 41 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)72 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)72 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)40 services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)29 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)28 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Diabetes43%
- Ischemic heart disease39%
- Anxiety39%
Hospitals where Hadi Siddiqui works
Medicare's Facility Affiliation Data lists Hadi Siddiqui at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Loyola Gottlieb Memorial HospitalMelrose Park, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140008
- Loyola University Medical CenterMaywood, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140276
- UChicago Medicine AdventHealth BolingbrookBolingbrook, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140304
- UChicago Medicine AdventHealth HinsdaleHinsdale, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140122
- UChicago Medicine AdventHealth La GrangeLa Grange, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140065
Practice locations
Addresses where Hadi Siddiqui is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 120 N Oak StHinsdale, IL 60521
- 2160 S 1st AveMaywood, IL 60153 (708) 216‑8372
- 396 Remington BlvdBolingbrook, IL 60440
- 396 Remington Blvd, Suite 380Bolingbrook, IL 60440
- 500 Remington BlvdBolingbrook, IL 60440 (630) 856‑3075
Group practices
Medicare enrollment lists Hadi Siddiqui as a member of these groups (CMS data updated October 2, 2026).
- Loyola University Medical Center953 clinicians in the group
- Adventist Health Partners, Inc.255 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Hinsdale
Clinicians with the same Medicare primary specialty in Hinsdale, IL — not a recommendation.
Other clinicians in Loyola University Medical Center
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2007 (19 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1639361413 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians