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DR. NAUREEN TAREEN M.D.
NPI 1699952820
Internal Medicine in Fullerton, CA

Active since January 30, 2008PECOS Enrolled
831 W LAS PALMAS DR, FULLERTON, CA 92835(714) 403-9942(714) 403-9942 Get Directions Write a Review

NPPES record last updated: March 7, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Naureen Tareen M.d. NPPES

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

DR. NAUREEN TAREEN M.D. (NPI 1699952820) is an individual internal medicine provider in Fullerton, California, licensed in California (A64054) and active in the NPI registry since January 2008. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1699952820
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. NAUREEN TAREENCredential: M.D.
Location Address831 W LAS PALMAS DRFullerton, CA 92835-1439
Mailing Address3834 S Western AveLos Angeles, CA 90062-1104 · (323) 730-1920 · Fax (323) 373-2045
Phone(714) 403-9942
Fax(714) 403-9942
Sole ProprietorYes
Enumeration DateJanuary 30, 2008
Last NPPES UpdateMarch 7, 2023
✔ NPI 1699952820 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 · A64054
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.
831 W LAS PALMAS DR, Fullerton, CA 92835
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Naureen Tareen M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

5

Medicare enrollment records show Naureen Tareen reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Caduceus Physicians Medical Group
7.3 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
Provider Profile
16 mi
Nephrology
2888 LONG BEACH BLVD STE 235
Long Beach, CA 90806
  • Reassigned Medicare billing, California enrollment
  • 3 clinicians in this Medicare group
NPI 1003052739 (562) 803-2486
T H E Clinic Inc
22 mi
Clinic/Center
3834 S. WESTERN AVENUE
Los Angeles, CA 90062
  • Reassigned Medicare billing, California enrollment
  • 24 clinicians in this Medicare group
NPI 1023287679 (323) 730-1920
E.T. Foot & Ankle
25 mi
Primary Podiatric Medicine
23365 HAWTHORNE BLVD STE 101
Torrance, CA 90505
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Aasin Tareen
  • 9 clinicians in this Medicare group
NPI 1013780576 (714) 851-7775
West Coast Skin And Cancer Medical Center, Inc.
227 mi
Dermatology
7055 N FRESNO ST, SUITE 310
Fresno, CA 93720
  • Reassigned Medicare billing, California enrollment
  • 4 clinicians in this Medicare group
NPI 1588674212 (559) 446-0285

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

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.
71 services48 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92835 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.

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 Naureen Tareen's NPI number?

The NPI number for Naureen Tareen is 1699952820. It was assigned to this individual provider in the NPPES registry on January 30, 2008.

Where is Naureen Tareen located?

Naureen Tareen practices at 831 W Las Palmas Dr, Fullerton, CA 92835. The listed phone number is (714) 403-9942.

What is Naureen Tareen's specialty?

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

Is Naureen Tareen enrolled in Medicare?

Yes. Naureen Tareen is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Naureen Tareen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Naureen Tareen reassigns Medicare benefits to 5 organizations: Caduceus Physicians Medical Group (Yorba Linda, CA), (Long Beach, CA), T H E Clinic Inc (Los Angeles, CA), E.T. Foot & Ankle (Torrance, CA) and West Coast Skin And Cancer Medical Center, Inc. (Fresno, 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 Naureen 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 Naureen Tareen was last updated on March 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.