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WENCHENG JEN M.D.
NPI 1811915481
Internal Medicine in Arcadia, CA

Active since July 18, 2006PECOS EnrolledAccepts Medicare Assignment
817 S 1ST AVE UNIT A, UNIT A, ARCADIA, CA 91006(626) 416-3051(626) 478-1068 Get Directions Write a Review

NPPES record last updated: January 28, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 28, 2026, Jun 15, 2016, Mar 4, 2016 and 3 more (6 updates tracked since 2015).

About Wencheng Jen M.d. NPPES

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

WENCHENG JEN M.D. (NPI 1811915481) is an individual internal medicine provider in Arcadia, California, licensed in California (A70481) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Southern California Keck School Of Medicine (1998).

NPPES Registry Identity

NPI1811915481
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameWENCHENG JENCredential: M.D.
Location Address817 S 1ST AVE UNIT A, UNIT AArcadia, CA 91006-3918
Mailing Address817 S 1st Ave Unit A, Unit AArcadia, CA 91006-3918 · (626) 416-3051 · Fax (626) 478-1068
Phone(626) 416-3051
Fax(626) 478-1068
Sole ProprietorYes
Medical School CMSUniversity Of Southern California Keck School Of MedicineGraduated 1998
Enumeration DateJuly 18, 2006
Last NPPES UpdateJanuary 28, 20266 updates tracked since enumeration
NPPES CertifiedJanuary 28, 2026
✔ NPI 1811915481 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 · A70481
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.
817 S 1ST AVE UNIT A, Arcadia, CA 91006
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Other Identifiers 1

Medicaid00A704810CA

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

Wencheng Jen 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 ID4385534106
PECOS Enrollment IDI20040316001455
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 12

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 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.
311 services129 patients
Chronic care management services for two or more chronic conditions, first 30 minutes provided personally by health care professional, per calendar month 99491
Chronic care management services involve a healthcare professional personally providing care for patients with two or more chronic conditions. This service, offered monthly, focuses on the first 30 minutes of care, helping manage and coordinate the patient's health needs.
286 services123 patients
Complex chronic care management services for two or more chronic conditions, first 60 minutes of clinical staff time directed by health care professional, per calendar month 99487
Complex chronic care management is a service for patients with two or more long-term health conditions. It involves a healthcare professional directing clinical staff in providing care for the first 60 minutes each month. This helps manage your health conditions effectively.
247 services115 patients
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month 99490
Chronic care management services involve a healthcare professional directing clinical staff in managing your chronic conditions. This includes the first 20 minutes per month of services like medication management, care coordination, and health monitoring to help improve your health and quality of life.
133 services89 patients
Complex chronic care management services for two or more chronic conditions, each additional 60 minutes of clinical staff time directed by health care professional, per calendar month 99489
Complex chronic care management is a service for patients with multiple chronic conditions. It involves an additional 60 minutes per month of clinical staff time directed by a healthcare professional. This service assists in managing your health conditions effectively.
131 services56 patients
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.
67 services46 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91006 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Provide Patient Access
At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…
64%845 patients3/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 2

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
8 suppliers21 claims45 services$6.16 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
5 suppliers19 claims23 services$1.03 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Wencheng Jen's NPI number?

The NPI number for Wencheng Jen is 1811915481. It was assigned to this individual provider in the NPPES registry on July 18, 2006.

Where is Wencheng Jen located?

Wencheng Jen practices at 817 S 1st Ave Unit A Unit A, Arcadia, CA 91006. The listed phone number is (626) 416-3051.

What is Wencheng Jen's specialty?

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

Is Wencheng Jen enrolled in Medicare?

Yes. Wencheng Jen 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 Wencheng Jen was last updated on January 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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.