Tien-Chun Chen, MD
NPI 1396005450 · Gastroenterology Physician · Temple City, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tien-Chun Chen, MD is a Gastroenterology Physician provider in Temple City, CA (NPI 1396005450).
Provider details
- NPI number
- 1396005450
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A154605 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,006 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 187 | $101 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 155 | $142 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 131 | $166 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 113 | $183 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 99 | $102 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 195 | 188 |
| Pantoprazole Sodium | 183 | 77 |
| Omeprazole | 79 | 41 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 60 | 58 |
| Linaclotidebrand: Linzess | 55 | 24 |
| Tenofovir Alafenamidebrand: Vemlidy | 55 | — |
| Famotidine |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,331 across 73 records (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
Additional practice locations (1)
- 1828 E Cesar E Chavez Ave Ste 6200Los Angeles, CA 90033-2585Phone: (213) 328-0819Fax: (844) 407-0584
Registry dates
- Enumerated
- 2012-05-23
- Last updated
- 2023-11-23
- Certified
- 2023-11-23
Frequently asked questions
- What is Tien-Chun Chen's NPI number?
- Tien-Chun Chen's National Provider Identifier (NPI) is 1396005450, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tien-Chun Chen's specialty?
- Tien-Chun Chen is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Tien-Chun Chen located?
- Tien-Chun Chen's practice location on file with NPPES is 6271 Rosemead Blvd, Temple City, CA 91780-1562.
- What is Tien-Chun Chen's phone number?
- The practice phone number listed in the NPPES registry for Tien-Chun Chen is (626) 898-4560.
- Does Tien-Chun Chen accept Medicare?
- Tien-Chun Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tien-Chun Chen's NPI active?
- Yes — Tien-Chun Chen's NPI (1396005450) is active in the NPPES registry as of the last update on 2023-11-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.