Kien Tran, MD
NPI 1396831889 · Internal Medicine Physician · Tustin, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kien Tran, MD is a Internal Medicine Physician provider in Tustin, CA (NPI 1396831889).
Provider details
- NPI number
- 1396831889
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A88769 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Hospitals
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
44 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 44 | $75 |
Typical Medicare-allowed amounts for these services range $75–$75 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 100 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 3,985 | 3,838 |
| Losartan Potassium | 1,471 | 1,433 |
| Lisinopril | 1,371 | 1,342 |
| Metformin Hcl | 1,264 | 1,210 |
| Rosuvastatin Calcium | 887 | 879 |
| Simvastatin | 530 | 519 |
| Pravastatin Sodium | 245 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$23 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-04
- Last updated
- 2025-09-11
Frequently asked questions
- What is Kien Tran's NPI number?
- Kien Tran's National Provider Identifier (NPI) is 1396831889, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kien Tran's specialty?
- Kien Tran is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Kien Tran located?
- Kien Tran's practice location on file with NPPES is 15491 Pasadena Ave Apt 87, Tustin, CA 92780-4247.
- What is Kien Tran's phone number?
- The practice phone number listed in the NPPES registry for Kien Tran is (832) 287-6252.
- Does Kien Tran accept Medicare?
- Kien Tran is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kien Tran's NPI active?
- Yes — Kien Tran's NPI (1396831889) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.