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DR. SERENE AHMED TAREEN M.D.
NPI 1982137279
Internal Medicine in Sylmar, CA

Active since April 04, 2017PECOS EnrolledAccepts Medicare Assignment
14445 OLIVE VIEW DR, OLIVE VIEW-UCLA MEDICAL CENTER, SYLMAR, CA 91342(818) 364-3205 Get Directions Write a Review

NPPES record last updated: July 27, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Serene Ahmed Tareen M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. SERENE AHMED TAREEN M.D. (NPI 1982137279) is an individual internal medicine provider in Sylmar, California, licensed in California (A162652) and active in the NPI registry since April 2017. She is enrolled in Medicare PECOS and is a graduate of University Of Miami, Lm Miller School Of Medicine (2017).

NPPES Registry Identity

NPI1982137279
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. SERENE AHMED TAREENCredential: M.D.
Location Address14445 OLIVE VIEW DR, OLIVE VIEW-UCLA MEDICAL CENTERSylmar, CA 91342-1437
Mailing Address14445 Olive View Dr, Olive View-ucla Medical CenterSylmar, CA 91342-1437
Phone(818) 364-3205
Sole ProprietorNo
Medical School CMSUniversity Of Miami, Lm Miller School Of MedicineGraduated 2017
Enumeration DateApril 4, 2017
Last NPPES UpdateJuly 27, 2020
NPPES CertifiedJuly 27, 2020
✔ NPI 1982137279 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A162652
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
14445 OLIVE VIEW DR, Sylmar, CA 91342
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Other Names 1

Former Name (1)Serene Rafi Ahmed

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Serene Ahmed Tareen M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8426451782
PECOS Enrollment IDI20210723001086
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Serene Tareen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Anchor Medical Group
47 mi
Family Medicine
18200 YORBA LINDA BLVD STE 250
Yorba Linda, CA 92886
  • Reassigned Medicare billing, California enrollment
  • 23 clinicians in this Medicare group
NPI 1700678810 (714) 577-6000
Caduceus Physicians Medical Group
47 mi
Family Medicine
18200 YORBA LINDA BLVD STE 250
Yorba Linda, CA 92886
  • Reassigned Medicare billing, California enrollment
  • 40 clinicians in this Medicare group
NPI 1497702724 (714) 646-8000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
55 services40 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
22 services17 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91342 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

COUNTY OF LOS ANGELES AUDITOR CONTROLLER
General Acute Care Hospital
14445 OLIVE VIEW DR
SYLMAR, CA 91342
Los Angeles County (818) 364-1555
DENNIS POON
Nurse Practitioner (Family)
14445 OLIVE VIEW DR
SYLMAR, CA 91342
Los Angeles County (747) 210-3000
SERENA KE MD
Student in an Organized Health Care Education/Training Program
14445 OLIVE VIEW DR
SYLMAR, CA 91342
Los Angeles County (747) 210-3205
DR. PAUL I LIU M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
14445 OLIVE VIEW DR, ROOM 1A116
SYLMAR, CA 91342
Los Angeles County (818) 364-4033
DR. ARTHUR JENG M.D.
Internal Medicine (Infectious Disease)
14445 OLIVE VIEW DR, 2B182
SYLMAR, CA 91342
Los Angeles County (818) 364-3205
MRS. CECILIA CORONADO PTA
Physical Therapy Assistant
14445 OLIVE VIEW DR
SYLMAR, CA 91342
Los Angeles County (747) 210-4245
COUNTY OF LOS ANGELES AUDITOR CONTROLLER
General Acute Care Hospital
14445 OLIVE VIEW DR
SYLMAR, CA 91342
Los Angeles County (818) 364-1555
MR. ANDRIY A KUZNETSOV PT
Physical Therapist
14445 OLIVE VIEW DR
SYLMAR, CA 91342
Los Angeles County (818) 364-4245

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Serene Tareen's NPI number?

The NPI number for Serene Tareen is 1982137279. It was assigned to this individual provider in the NPPES registry on April 4, 2017. The provider is also known as Serene Rafi Ahmed.

Where is Serene Tareen located?

Serene Tareen practices at 14445 Olive View Dr Olive View-Ucla Medical Center, Sylmar, CA 91342. The listed phone number is (818) 364-3205.

What is Serene Tareen's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Serene Tareen enrolled in Medicare?

Yes. Serene Tareen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Serene Tareen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Serene Tareen reassigns Medicare benefits to 2 organizations: Anchor Medical Group (Yorba Linda, CA) and Caduceus Physicians Medical Group (Yorba Linda, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Serene Tareen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Serene Tareen was last updated on July 27, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.