Ken Nguyen, M.D.
NPI 1205193828 · Gastroenterology Physician · Temple City, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ken Nguyen, M.D. is a Gastroenterology Physician provider in Temple City, CA (NPI 1205193828).
Provider details
- NPI number
- 1205193828
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A127222 (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
951 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 232 | $137 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 112 | $179 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 101 | $96 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 86 | $97 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 61 | $257 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 305 | 100 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 173 | 167 |
| Omeprazole | 164 | 40 |
| Linaclotidebrand: Linzess | 138 | 42 |
| Lipase/Protease/Amylasebrand: Creon | 101 | 34 |
| Dexlansoprazolebrand: Dexlansoprazole Dr | 92 | 25 |
| Vonoprazan Fumarate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$33,269 across 170 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
- 2012-04-20
- Last updated
- 2023-11-23
- Certified
- 2023-11-23
Frequently asked questions
- What is Ken Nguyen's NPI number?
- Ken Nguyen's National Provider Identifier (NPI) is 1205193828, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ken Nguyen's specialty?
- Ken Nguyen is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Ken Nguyen located?
- Ken Nguyen's practice location on file with NPPES is 6271 Rosemead Blvd, Temple City, CA 91780-1562.
- What is Ken Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Ken Nguyen is (626) 898-4560.
- Does Ken Nguyen accept Medicare?
- Ken Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ken Nguyen's NPI active?
- Yes — Ken Nguyen's NPI (1205193828) 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.