Quick answers
- Does Michael J. Mendoza accept Medicare assignment?
- Yes. Medicare's clinician data says Michael J. Mendoza 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 Michael J. Mendoza see?
- In 2024, CMS data shows 758 Original Medicare patients and 1,610 services for Michael J. Mendoza. This counts Original Medicare only and measures volume, not quality.
- What is Michael J. Mendoza's NPI number?
- 1902989668. 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 Michael J. Mendoza, 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 | 758 |
|---|---|
| Services billed to Medicare | 1,610 |
| Different services or procedures | 76 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)313 services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)231 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)182 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)128 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)105 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%
- Arthritis42%
- Ischemic heart disease33%
- Diabetes31%
- Anxiety27%
Hospitals where Michael J. Mendoza works
Medicare's Facility Affiliation Data lists Michael J. Mendoza 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.
- Community Hospital of the Monterey PeninsulaMonterey, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050145
- Natividad Medical CenterSalinas, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050248
- Salinas Valley Health Medical CenterSalinas, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050334
Practice locations
Addresses where Michael J. Mendoza is enrolled with Medicare (CMS data updated October 2, 2026).
- 23 Upper Ragsdale DrMonterey, CA 93940 (831) 375‑3577
- 601 E Romie Ln, Suite 1Salinas, CA 93901 (831) 374‑3577
- 850 5th StGonzales, CA 93926 (831) 675‑3601
Group practices
Medicare enrollment lists Michael J. Mendoza as a member of these groups (CMS data updated October 2, 2026).
- Monterey Bay Gi Consultants Medical Group Inc21 clinicians in the group
- Salinas Valley Memorial Healthcare System20 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Monterey
Clinicians with the same Medicare primary specialty in Monterey, CA — not a recommendation.
Other clinicians in Monterey Bay Gi Consultants Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Geffen School Of Medicine |
| Graduation year | 2000 (26 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1902989668 |
| 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