Quick answers
- Does Tan D. Ngo accept Medicare assignment?
- Yes. Medicare's clinician data says Tan D. Ngo accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Tan D. Ngo see?
- In 2024, CMS data shows 293 Original Medicare patients and 30,248 services for Tan D. Ngo. This counts Original Medicare only and measures volume, not quality.
- What is Tan D. Ngo's NPI number?
- 1770503997. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Tan D. Ngo, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 293 |
|---|---|
| Services billed to Medicare | 30,248 |
| Different services or procedures | 31 |
| Participating Medicare provider | Yes |
| Average age of these patients | 81 |
Most frequent services
- Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes (97110)7,638 services
- Application of ultrasound, each 15 minutes (97035)7,528 services
- Injection, methylprednisolone acetate, 1 mg (J1010)2,670 services
- Application of mechanical traction (97012)2,179 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)1,786 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis75%
- Anxiety65%
- Diabetes46%
- Asthma32%
Practice locations
Addresses where Tan D. Ngo is enrolled with Medicare (CMS data updated October 2, 2026).
- 9431 Edinger AveWestminster, CA 92683
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Westminster
Clinicians with the same Medicare primary specialty in Westminster, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Southern California Keck School Of Medicine |
| Graduation year | 1991 (35 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1770503997 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians