Toan Nguyen, M.D.
NPI 1639129711 · Specialist · Long Beach, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Toan Nguyen, M.D. is a Specialist provider in Long Beach, CA (NPI 1639129711).
Provider details
- NPI number
- 1639129711
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A65048 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,580 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 1,076 | $82 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 233 | $179 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 210 | $119 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 25 | $191 |
| Physician Or Allowed Practitioner Certification for Medicare-Covered Home Health Services Under a Home Health Plan of Care (patient Not Present), Including Contacts With Home Health Agency and Review of Reports of Patient Status Required By Physicians andG0180 | 22 | $59 |
| Advance Care Planning, First 30 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 56 | 33 |
| Apixabanbrand: Eliquis | 55 | 17 |
| Atorvastatin Calcium | 55 | 23 |
| Pantoprazole Sodium | 33 | 24 |
| Hydralazine Hcl | 27 | 18 |
| Furosemide | 23 | 15 |
| Prednisone | 22 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-11
- Last updated
- 2014-06-12
Frequently asked questions
- What is Toan Nguyen's NPI number?
- Toan Nguyen's National Provider Identifier (NPI) is 1639129711, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Toan Nguyen's specialty?
- Toan Nguyen is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Toan Nguyen located?
- Toan Nguyen's practice location on file with NPPES is 2865 Atlantic Ave, Long Beach, CA 90806.
- What is Toan Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Toan Nguyen is (562) 270-4050.
- Does Toan Nguyen accept Medicare?
- Toan Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Toan Nguyen's NPI active?
- Yes — Toan Nguyen's NPI (1639129711) is active in the NPPES registry as of the last update on 2014-06-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.