Quick answers
- Does Yogesh K. Trehan accept Medicare assignment?
- Yes. Medicare's clinician data says Yogesh K. Trehan 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 Yogesh K. Trehan see?
- In 2024, CMS data shows 570 Original Medicare patients and 5,774 services for Yogesh K. Trehan. This counts Original Medicare only and measures volume, not quality.
- What is Yogesh K. Trehan's NPI number?
- 1255372769. 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 Yogesh K. Trehan, 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 | 570 |
|---|---|
| Services billed to Medicare | 5,774 |
| Different services or procedures | 25 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)2,033 services
- Telephone medical discussion with physician, 11-20 minutes (99442)1,038 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)452 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)438 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)373 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%
- Arthritis57%
- Diabetes34%
- Chronic kidney disease28%
- Ischemic heart disease25%
Hospitals where Yogesh K. Trehan works
Medicare's Facility Affiliation Data lists Yogesh K. Trehan 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.
- John Muir Medical Center - Concord CampusConcord, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050496
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050180
- Sutter Delta Medical CenterAntioch, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050523
Practice locations
Addresses where Yogesh K. Trehan is enrolled with Medicare (CMS data updated October 2, 2026).
- 100 Cortona Way, Suite 140Brentwood, CA 94513 (925) 516‑4488
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Brentwood
Clinicians with the same Medicare primary specialty in Brentwood, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1995 (31 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1255372769 |
| 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