Quick answers
- Does Hassan Sheikh Moghaddas accept Medicare assignment?
- Yes. Medicare's clinician data says Hassan Sheikh Moghaddas 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 Hassan Sheikh Moghaddas see?
- In 2024, CMS data shows 144 Original Medicare patients and 275 services for Hassan Sheikh Moghaddas. This counts Original Medicare only and measures volume, not quality.
- What is Hassan Sheikh Moghaddas's NPI number?
- 1124469838. 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 Hassan Sheikh Moghaddas, 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 | 144 |
|---|---|
| Services billed to Medicare | 275 |
| Different services or procedures | 56 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)43 services
- Biopsy of large bowel using a flexible endoscope (45380)42 services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)27 services
- Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk (G0121)20 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)13 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 pressure74%
- High cholesterol74%
- Arthritis37%
- Anxiety35%
- Ischemic heart disease28%
- Diabetes26%
Hospitals where Hassan Sheikh Moghaddas works
Medicare's Facility Affiliation Data lists Hassan Sheikh Moghaddas 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 ClearlakeClearlake, CA · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 051317
- Adventist Health St HelenaSaint Helena, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050013
- Adventist Health Ukiah ValleyUkiah, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050301
Practice locations
Addresses where Hassan Sheikh Moghaddas is enrolled with Medicare (CMS data updated October 2, 2026).
- 15630 18th AveClearlake, CA 95422 (707) 994‑6486
Group practices
Medicare enrollment lists Hassan Sheikh Moghaddas as a member of this group (CMS data updated October 2, 2026).
- Adventist Health Clearlake Hospital Inc.87 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Other clinicians in Adventist Health Clearlake Hospital Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2011 (15 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1124469838 |
| 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