Quick answers
- Does Kenneth K. Tam accept Medicare assignment?
- Yes. Medicare's clinician data says Kenneth K. Tam 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 Kenneth K. Tam see?
- In 2024, CMS data shows 996 Original Medicare patients and 3,116 services for Kenneth K. Tam. This counts Original Medicare only and measures volume, not quality.
- What is Kenneth K. Tam's NPI number?
- 1821081423. 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 Kenneth K. Tam, 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 | 996 |
|---|---|
| Services billed to Medicare | 3,116 |
| Different services or procedures | 58 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)698 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)672 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)344 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)211 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)154 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%
- Arthritis55%
- Ischemic heart disease49%
- Diabetes44%
- Heart failure40%
Hospitals where Kenneth K. Tam works
Medicare's Facility Affiliation Data lists Kenneth K. Tam 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.
- Henry Mayo Newhall HospitalValencia, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: not listed by Medicare · CCN 050624
- Northridge Hospital Medical CenterNorthridge, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050116
- Providence Cedars Sinai Tarzana Medical CenterTarzana, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050761
- Providence Holy Cross Medical CenterMission Hills, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050278
Practice locations
Addresses where Kenneth K. Tam is enrolled with Medicare (CMS data updated October 2, 2026).
- 14901 Rinaldi St, Suite 110Mission Hills, CA 91345 (818) 365‑1339
- 23929 McBean Pkwy, Suite 216Valencia, CA 91355 (661) 259‑1534
Group practices
Medicare enrollment lists Kenneth K. Tam as a member of this group (CMS data updated October 2, 2026).
- Cardiovascular Consultants Medical Group13 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in California →
Other cardiologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Other clinicians in Cardiovascular Consultants Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Maryland School Of Medicine |
| Graduation year | 1988 (38 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821081423 |
| 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