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ANDREW TIEN DUKE M.D.
NPI 1013986959
Internal Medicine - Critical Care Medicine in Fullerton, CA

Active since March 14, 2006PECOS EnrolledAccepts Medicare Assignment
100 E VALENCIA MESA DR, FULLERTON, CA 92835(714) 992-3969 Get Directions Write a Review

NPPES record last updated: May 19, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 19, 2025, Feb 8, 2023 (2 updates tracked since 2023).

About Andrew Tien Duke M.d. NPPES

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

ANDREW TIEN DUKE M.D. (NPI 1013986959) is an individual critical care medicine provider in Fullerton, California, licensed in California (A74218) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Riverside, and is a graduate of Loma Linda University School Of Medicine (1999).

NPPES Registry Identity

NPI1013986959
Entity TypeIndividualMale
Primary Taxonomy207RC0200X
Provider Legal NameANDREW TIEN DUKECredential: M.D.
Location Address100 E VALENCIA MESA DRFullerton, CA 92835-3813
Mailing AddressPo Box 1753Anaheim, CA 92815-1753 · (714) 315-5759 · Fax (714) 276-0599
Phone(714) 992-3969
Sole ProprietorNo
Medical School CMSLoma Linda University School Of MedicineGraduated 1999
Enumeration DateMarch 14, 2006
Last NPPES UpdateMay 19, 20252 updates tracked since enumeration
NPPES CertifiedMay 19, 2025
✔ NPI 1013986959 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RC0200X
License✔ Licensed in CA · A74218
Definition
An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
100 E VALENCIA MESA DR, Fullerton, CA 92835
Open in Google Maps ↗

Secondary Practice Location 1

Location 14445 Magnolia AveRiverside, CA 92501-4199 · Phone (951) 788-3000

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

Andrew Tien Duke 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 ID8527097187
PECOS Enrollment IDI20050804000729
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

4

Medicare enrollment records show Andrew Duke reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Providence Medical Foundation
1.9 mi
Family Medicine
955 W IMPERIAL HWY STE 110
Brea, CA 92821
  • Reassigned Medicare billing, California enrollment
  • 1,699 clinicians in this Medicare group
NPI 1871607762 (714) 449-4900
City Of Hope Medical Foundation
17 mi
Hematology & Oncology
1500 DUARTE RD
Duarte, CA 91010
  • Reassigned Medicare billing, California enrollment
  • 1,335 clinicians in this Medicare group
NPI 1871886366 (626) 256-4673
Riverside Medical Clinic, Inc
22 mi
Family Medicine
12742 LIMONITE AVE
Eastvale, CA 92880
  • Reassigned Medicare billing, California enrollment
  • 349 clinicians in this Medicare group
NPI 1972845535 (951) 683-6370
El-Bershawi Medical Corp
25 mi
Critical Care Medicine
4234 RIVERWALK PKWY, SUITE 230
Riverside, CA 92505
  • Reassigned Medicare billing, California enrollment
  • 114 clinicians in this Medicare group
NPI 1386813103 (951) 781-3672

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

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.

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

Clinical Information Reconciliation
For at least one transition of care or referral received or patient encounter in which the MIPS eligible clinician has never before encountered the patient, the MIPS eligible clinician performs clinical information reconciliation.
9%117 patients1/55-star benchmark: 100%
e-Prescribing
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
98%138 patients4/55-star benchmark: 100%
Patient-Generated Health Data
Patient-generated health data or data from a non-clinical setting is incorporated into the certified EHR technology for at least one unique patient seen by the MIPS eligible clinician during the performance period.
4%251 patients
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from certified EHR technology to identify patient-specific educational resources and provide electronic access to those materials to at least one unique patient seen by the MIPS eligible…
100%251 patients5/55-star benchmark: 100%
Provide Patient Access
For at least one unique patient seen by the MIPS eligible clinician: (1) The patient (or the patient authorized representative) is provided timely access to view online, download, and transmit his or her health information; and (2) The MIPS eligible clinician…
93%251 patients4/55-star benchmark: 100%
Request/Accept Summary of Care
For at least one transition of care or referral received or patient encounter in which the MIPS eligible clinician has never before encountered the patient, the MIPS eligible clinician receives or retrieves and incorporates into the patient's record an…
100%116 patients5/55-star benchmark: 100%
Secure Messaging
For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of certified EHR technology to the patient (or the patient-authorized representative), or in…
58%251 patients4/55-star benchmark: 75%
View, Download and Transmit (VDT)
During the performance period, at least one unique patient (or patient-authorized representatives) seen by the MIPS eligible clinician actively engages with the EHR made accessible by the MIPS eligible clinician.
55%251 patients
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 5

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

Full face mask used with positive airway pressure device, each A7030
DME-Other DME · category DE001N
2 suppliers11 claims11 services$75.49 avg. paid by Medicare
Face mask interface, replacement for full face mask, each A7031
DME-Other DME · category DE001N
2 suppliers11 claims25 services$30.25 avg. paid by Medicare
Tubing used with positive airway pressure device A7037
DME-Other DME · category DE001N
3 suppliers13 claims13 services$8.79 avg. paid by Medicare
Filter, disposable, used with positive airway pressure device A7038
DME-Other DME · category DE001N
3 suppliers15 claims86 services$1.51 avg. paid by Medicare
Portable oxygen contents, gaseous, 1 month's supply = 1 unit E0443
DME-Oxygen and Supplies · category DC000N
2 suppliers11 claims11 services$35.80 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.

BOWEN JIANG M.D.
Neurological Surgery
100 E VALENCIA MESA DR
FULLERTON, CA 92835
Orange County (714) 734-3120
CHIKA KAWASHIMA
Physician Assistant
100 E VALENCIA MESA DR, SUITE 310
FULLERTON, CA 92835
Orange County (714) 446-5527
MONICA MARTYN RD
Dietitian, Registered
100 E VALENCIA MESA DR, SUITE 111
FULLERTON, CA 92835
Orange County (714) 446-5369
BENJAMIN ROTHMAN A PHARMACY CORPORATION
Pharmacy (Community/Retail Pharmacy)
100 E VALENCIA MESA DR, SUITE 106
FULLERTON, CA 92835
Orange County (714) 992-1234
EUGENE BYUN MD
Internal Medicine (Interventional Cardiology)
100 E VALENCIA MESA DR, SUITE 206
FULLERTON, CA 92835
Orange County (714) 446-5050
RENEE M. SODERQUIST RD
Dietitian, Registered
100 E VALENCIA MESA DR, SUITE 105
FULLERTON, CA 92835
Orange County (714) 446-5640
DENNIS WAYNE BRILEY PA
Physician Assistant (Surgical)
100 E VALENCIA MESA DR, SUITE 105
FULLERTON, CA 92835
Orange County (714) 446-5200
ARTHUR D ZEPEDA MD
Pain Medicine (Pain Medicine)
100 E VALENCIA MESA DR, SUITE 310
FULLERTON, CA 92835
Orange County (714) 446-5200

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 Andrew Duke's NPI number?

The NPI number for Andrew Duke is 1013986959. It was assigned to this individual provider in the NPPES registry on March 14, 2006.

Where is Andrew Duke located?

Andrew Duke practices at 100 E Valencia Mesa Dr, Fullerton, CA 92835. The listed phone number is (714) 992-3969.

What is Andrew Duke's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.

Is Andrew Duke enrolled in Medicare?

Yes. Andrew Duke 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 Andrew Duke's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Duke reassigns Medicare benefits to 4 organizations: Providence Medical Foundation (Brea, CA), City Of Hope Medical Foundation (Duarte, CA), Riverside Medical Clinic, Inc (Eastvale, CA) and El-Bershawi Medical Corp (Riverside, 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 Andrew Duke'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 Andrew Duke was last updated on May 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.