Quick answers
- Does Serene A. Tareen accept Medicare assignment?
- Yes. Medicare's clinician data says Serene A. Tareen 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 Serene A. Tareen see?
- In 2024, CMS data shows 63 Original Medicare patients and 132 services for Serene A. Tareen. This counts Original Medicare only and measures volume, not quality.
- What is Serene A. Tareen's NPI number?
- 1982137279. 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 Serene A. Tareen, 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 | 63 |
|---|---|
| Services billed to Medicare | 132 |
| Different services or procedures | 18 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)55 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)22 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 cholesterol70%
- Arthritis38%
- Diabetes25%
- Ischemic heart disease19%
- Anxiety19%
Practice locations
Addresses where Serene A. Tareen is enrolled with Medicare (CMS data updated October 2, 2026).
- 18200 Yorba Linda Blvd, Suite 250Yorba Linda, CA 92886 (714) 577‑6031
Group practices
Medicare enrollment lists Serene A. Tareen as a member of these groups (CMS data updated October 2, 2026).
- Caduceus Physicians Medical Group22 clinicians in the group
- Anchor Medical Group20 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Yorba Linda
Clinicians with the same Medicare primary specialty in Yorba Linda, CA — not a recommendation.
Other clinicians in Caduceus Physicians Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Miami, Lm Miller School Of Medicine |
| Graduation year | 2017 (9 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1982137279 |
| 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
- 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