Quick answers
- Does Muhammad A. Siddiqui accept Medicare assignment?
- Yes. Medicare's clinician data says Muhammad A. 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 Muhammad A. Siddiqui see?
- In 2024, CMS data shows 241 Original Medicare patients and 597 services for Muhammad A. Siddiqui. This counts Original Medicare only and measures volume, not quality.
- What is Muhammad A. Siddiqui's NPI number?
- 1689824443. 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 Muhammad A. 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 | 241 |
|---|---|
| Services billed to Medicare | 597 |
| Different services or procedures | 17 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Critical care, first 30-74 minutes (99291)416 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)94 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)18 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)17 services
- Emergent insertion of breathing tube into windpipe using an endoscope (31500)12 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%
- Chronic kidney disease60%
- Heart failure59%
- Diabetes57%
- Ischemic heart disease57%
Hospitals where Muhammad A. Siddiqui works
Medicare's Facility Affiliation Data lists Muhammad A. 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.
- CHRISTUS Mother Frances HospitalTyler, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 450102
- Methodist Mansfield Medical CenterMansfield, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 670023
- Texas Health Arlington Memorial HospitalArlington, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 450064
Practice locations
Addresses where Muhammad A. Siddiqui is enrolled with Medicare (CMS data updated October 2, 2026).
- 221 W Colorado Blvd, Suite 525Dallas, TX 75208
- 700 E Marshall AveLongview, TX 75601 (903) 315‑2000
- 800 E Dawson StTyler, TX 75701 (903) 593‑8441
Group practices
Medicare enrollment lists Muhammad A. Siddiqui as a member of these groups (CMS data updated October 2, 2026).
- Dallas Pulmonary and Critical Care PA182 clinicians in the group
- Northeast Texas Intensivists, PLLC52 clinicians in the group
Specialties
Other critical care doctors in Dallas
Clinicians with the same Medicare primary specialty in Dallas, TX — not a recommendation.
Other clinicians in Dallas Pulmonary and Critical Care PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2003 (23 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1689824443 |
| 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