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DR. KIEN PHUC TRAN MD
NPI 1396831889
Internal Medicine in Tustin, CA

Active since October 04, 2006PECOS Enrolled
30/100
CMS Quality Rating
15491 PASADENA AVE APT 87, TUSTIN, CA 92780(832) 287-6252 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Kien Phuc Tran Md NPPES

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

DR. KIEN PHUC TRAN MD (NPI 1396831889) is an individual internal medicine provider in Tustin, California, licensed in California (A88769) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1396831889
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. KIEN PHUC TRANCredential: MD
Location Address15491 PASADENA AVE APT 87Tustin, CA 92780-4247
Mailing Address15491 Pasadena Ave Apt 87Tustin, CA 92780-4247 · (832) 287-6252
Phone(832) 287-6252
Sole ProprietorYes
Enumeration DateOctober 4, 2006
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1396831889 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A88769
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.
Also ListedGeneral Acute Care HospitalTaxonomy 282N00000X · License A88769 (CA)
15491 PASADENA AVE APT 87, Tustin, CA 92780
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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. Kien Phuc Tran Md 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

2

Medicare enrollment records show Kien Tran reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Careconnectmd Ca PC
4.8 mi
Family Medicine
3090 BRISTOL ST STE 200
Costa Mesa, CA 92626
  • Reassigned Medicare billing, California enrollment
  • 194 clinicians in this Medicare group
NPI 1366063125 (888) 789-9585
Gn Medical Associates, Inc.
4.8 mi
Family Medicine
3090 BRISTOL ST STE 200
Costa Mesa, CA 92626
  • Reassigned Medicare billing, California enrollment
  • 103 clinicians in this Medicare group
NPI 1275576522 (888) 789-9585

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.

Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more 99308
A follow-up nursing facility visit per day is a daily check-up service provided by healthcare professionals. It lasts around 15 minutes and involves assessing your health status, monitoring your recovery progress, and addressing any concerns you may have about your health or treatment.
44 services32 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92780 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.

30/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality0
Improvement Activities0
Cost100

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.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
1 supplier12 claims12 services$21.30 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier12 claims12 services$119.41 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 Kien Tran's NPI number?

The NPI number for Kien Tran is 1396831889. It was assigned to this individual provider in the NPPES registry on October 4, 2006.

Where is Kien Tran located?

Kien Tran practices at 15491 Pasadena Ave Apt 87, Tustin, CA 92780. The listed phone number is (832) 287-6252.

What is Kien Tran's specialty?

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

Is Kien Tran enrolled in Medicare?

Yes. Kien Tran is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Kien Tran's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kien Tran reassigns Medicare benefits to 2 organizations: Careconnectmd Ca PC (Costa Mesa, CA) and Gn Medical Associates, Inc. (Costa Mesa, 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 Kien Tran'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 Kien Tran was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.