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

DR. CHIENWEI TIMOTHY CHEN MD
NPI 1992795256
Internal Medicine in Irvine, CA

Active since October 26, 2005PECOS EnrolledAccepts Medicare Assignment
4050 BARRANCA PKWY, SUITE 200, IRVINE, CA 92604(949) 551-1090(949) 262-5500 Get Directions Write a Review

NPPES record last updated: October 13, 2015. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Chienwei Timothy Chen Md NPPES

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

DR. CHIENWEI TIMOTHY CHEN MD (NPI 1992795256) is an individual internal medicine provider in Irvine, California, licensed in California (A79035) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS and is a graduate of Boston University School Of Medicine (1998).

NPPES Registry Identity

NPI1992795256
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. CHIENWEI TIMOTHY CHENCredential: MD
Location Address4050 BARRANCA PKWY, SUITE 200Irvine, CA 92604-7706
Mailing Address17360 Brookhurst St, Attn: Mcmf Credentialing Dept.Fountain Valley, CA 92708-3720
Phone(949) 551-1090
Fax(949) 262-5500
Sole ProprietorNo
Medical School CMSBoston University School Of MedicineGraduated 1998
Enumeration DateOctober 26, 2005
Last NPPES UpdateOctober 13, 2015
✔ NPI 1992795256 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 · A79035
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.
4050 BARRANCA PKWY, Irvine, CA 92604
Open in Google Maps ↗

Other Names 1

Professional Name (2)Dr. Timothy Chienwei Chen Md

Other Identifiers 2

Medicare PINEN797ZCA
Medicare UPINI13520CA

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

Dr. Chienwei Timothy Chen Md 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 ID8527033307
PECOS Enrollment IDI20040826000913
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 10

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.
347 services157 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
265 services143 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
153 services88 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
32 services32 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
28 services28 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
26 services26 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92604 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
9 suppliers37 claims68 services$5.56 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
6 suppliers12 claims14 services$1.13 avg. paid by Medicare
Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260
DME-Hospital Beds · category DB000N
1 supplier11 claims11 services$30.81 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 20

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

JON G BIORKMAN MD
Family Medicine
4050 BARRANCA PKWY, SUITE 200
IRVINE, CA 92604
Orange County (949) 551-1090
DR. JOHN H STASIEWICZ MD
Family Medicine
4050 BARRANCA PKWY, SUITE 200
IRVINE, CA 92604
Orange County (949) 551-1090
WAVE IMAGING, LLC
Clinic/Center (Radiology)
4050 BARRANCA PKWY, SUITE 160
IRVINE, CA 92604
Orange County (949) 726-9500
HOSSEIN ALIMADADIAN MD INC
Internal Medicine (Cardiovascular Disease)
4050 BARRANCA PKWY, SUITE 110
IRVINE, CA 92604
Orange County (949) 262-9600
DR. GRADY B HUCKABY JR. MD
Pediatrics (Adolescent Medicine)
4050 BARRANCA PKWY, SUITE 270
IRVINE, CA 92604
Orange County (949) 559-5601
ANTHONY WONG MD
Internal Medicine
4050 BARRANCA PKWY, SUITE 200
IRVINE, CA 92604
Orange County (949) 551-1090
BARTON THOMAS BILLECI MD
Internal Medicine (Adolescent Medicine)
4050 BARRANCA PKWY, SUITE 250
IRVINE, CA 92604
Orange County (949) 653-1173
PARS PHARMACY, INC.
Pharmacy (Community/Retail Pharmacy)
4050 BARRANCA PKWY, SUITE 150
IRVINE, CA 92604
Orange County (949) 716-2300

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 Chienwei Chen's NPI number?

The NPI number for Chienwei Chen is 1992795256. It was assigned to this individual provider in the NPPES registry on October 26, 2005. The provider is also known as Dr. Timothy Chienwei Chen MD.

Where is Chienwei Chen located?

Chienwei Chen practices at 4050 Barranca Pkwy Suite 200, Irvine, CA 92604. The listed phone number is (949) 551-1090.

What is Chienwei Chen's specialty?

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

Is Chienwei Chen enrolled in Medicare?

Yes. Chienwei Chen 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 Chienwei Chen was last updated on October 13, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.