1. Home
  2. Directory
  3. California
  4. Los Angeles
  5. Internal Medicine
  6. NPI Profile

CAROLINE T. NGUYEN M.D.
NPI 1528388337
Internal Medicine - Endocrinology, Diabetes & Metabolism in Los Angeles, CA

Active since June 03, 2010PECOS EnrolledAccepts Medicare Assignment
1520 SAN PABLO STREET, SUITE 1000, LOS ANGELES, CA 90033(323) 442-5100 Get Directions Write a Review

NPPES record last updated: October 12, 2016. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Caroline T. Nguyen M.d. NPPES

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

CAROLINE T. NGUYEN M.D. (NPI 1528388337) is an individual endocrinology, diabetes & metabolism provider in Los Angeles, California, licensed in California (A120689) and active in the NPI registry since June 2010. She is enrolled in Medicare PECOS and is a graduate of University Of California, Davis School Of Medicine (2010).

NPPES Registry Identity

NPI1528388337
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameCAROLINE T. NGUYENCredential: M.D.
Location Address1520 SAN PABLO STREET, SUITE 1000Los Angeles, CA 90033
Mailing Address1333 San Pablo Street Bmt-b11Los Angeles, CA 90033 · (323) 442-2806
Phone(323) 442-5100
Sole ProprietorNo
Medical School CMSUniversity Of California, Davis School Of MedicineGraduated 2010
Enumeration DateJune 3, 2010
Last NPPES UpdateOctober 12, 2016
✔ NPI 1528388337 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in CA · A120689
Definition

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

1520 SAN PABLO STREET, Los Angeles, CA 90033
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Caroline T. Nguyen 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 ID6800100025
PECOS Enrollment IDI20150731017129
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.

Areas of Expertise CMS Part B claims 8

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.

Follow-up hospital inpatient care per day, typically 25 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
268 services65 patients
Established patient office or other outpatient visit, 30-39 minutes 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.
188 services133 patients
Established patient office or other outpatient visit, 30-39 minutes 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.
74 services51 patients
Initial hospital inpatient care per day, typically 50 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
34 services33 patients
Telephone medical discussion with physician, 21-30 minutes 99443
This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.
33 services27 patients
Established patient office or other outpatient visit, 40-54 minutes 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.
27 services26 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90033 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.

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
30 suppliers94 claims222 services$6.22 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
16 suppliers29 claims39 services$1.08 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
6 suppliers166 claims167 services$199.32 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 10

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

THOMAS A HICKLIN I MD
Psychiatry & Neurology (Psychiatry)
1520 SAN PABLO STREET, SUITE 1652
LOS ANGELES, CA 90033
Los Angeles County (323) 442-6000
DR. PARKASH GILL M.D.
Internal Medicine (Hematology)
1520 SAN PABLO STREET, SUITE 1000
LOS ANGELES, CA 90033
Los Angeles County (626) 457-5839
DEIRDRE R ANGLIN MD
Emergency Medicine
1520 SAN PABLO STREET
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5955
MRS. SELENA BREWER NP
Nurse Practitioner
1520 SAN PABLO STREET, SUITE 4300
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5907
SAURABH D ASHIER PA-C
Physician Assistant (Surgical)
1520 SAN PABLO STREET
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5849
DR. CHIRAG H. PATEL M.D.
Multi-Specialty
1520 SAN PABLO STREET, SUITE 3000
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5710
ALFREDO LEE CHANG MD
Internal Medicine (Critical Care Medicine)
1520 SAN PABLO STREET, SUITE1000
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5100
CHRISTOPHER SCOTT JUSTINO P.A.
Physician Assistant (Surgical)
1520 SAN PABLO STREET, SUITE 4300
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5849

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 Caroline Nguyen's NPI number?

The NPI number for Caroline Nguyen is 1528388337. It was assigned to this individual provider in the NPPES registry on June 3, 2010.

Where is Caroline Nguyen located?

Caroline Nguyen practices at 1520 San Pablo Street Suite 1000, Los Angeles, CA 90033. The listed phone number is (323) 442-5100.

What is Caroline Nguyen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Caroline Nguyen enrolled in Medicare?

Yes. Caroline Nguyen 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.

When was this NPI record last updated?

The NPPES record for Caroline Nguyen was last updated on October 12, 2016. NPI Profile syncs with the weekly NPPES data releases published by CMS.