Quick answers
- Does Siraj K. Ahmed accept Medicare assignment?
- Yes. Medicare's clinician data says Siraj K. Ahmed 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 Siraj K. Ahmed see?
- In 2024, CMS data shows 521 Original Medicare patients and 4,933 services for Siraj K. Ahmed. This counts Original Medicare only and measures volume, not quality.
- What is Siraj K. Ahmed's NPI number?
- 1265513121. 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 Siraj K. Ahmed, 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 | 521 |
|---|---|
| Services billed to Medicare | 4,933 |
| Different services or procedures | 40 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Hyperbaric oxygen under pressure, full body chamber, per 30 minute interval (G0277)1,621 services
- Detection test by immunoassay with direct visual observation for influenza virus (87804)586 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)468 services
- Management of oxygen chamber therapy (99183)420 services
- Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus (87426)320 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%
- Diabetes56%
- Ischemic heart disease53%
- Heart failure53%
- Chronic kidney disease52%
Hospitals where Siraj K. Ahmed works
Medicare's Facility Affiliation Data lists Siraj K. Ahmed 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.
- Adventist Health Lodi MemorialLodi, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050336
- Doctors Hospital of MantecaManteca, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050118
- Mark Twain Medical CenterSan Andreas, CA · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 051332
- St Joseph's Medical Center of StocktonStockton, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050084
- Sutter Tracy Community HospitalTracy, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050313
Practice locations
Addresses where Siraj K. Ahmed is enrolled with Medicare (CMS data updated October 2, 2026).
- 1206 E N StManteca, CA 95336 (209) 665‑7054
- 1801 E March Ln, Suite C300Stockton, CA 95210 (209) 464‑6422
- 333 Sunrise Ave, Suite 890Roseville, CA 95661 (916) 771‑2555
- 520 E Ctr St, Suite 102Manteca, CA 95336 (209) 823‑2131
Group practices
Medicare enrollment lists Siraj K. Ahmed as a member of this group (CMS data updated October 2, 2026).
- San Joaquin Critical Care Medical Group, Inc.9 clinicians in the group
Specialties
Other pulmonologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1987 (39 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1265513121 |
| 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