Provider Profile
Tammy T. Nguyen, PA-C
Unclaimed ProfileAbout Tammy Nguyen
Tammy T. Nguyen, PA-C is a physician assistant based in Los Alamitos, CA. According to Medicare claims data, Tammy cared for 355 Medicare patients across 397 services. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and routine electrocardiogram (ecg) using at least 12 leads with interpretation and report.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (562) 594-6599
- Email not available
Practice Locations
3460 KATELLA AVE
Los Alamitos, CA 90720
1125 E 17th St Ste N452
Santa Ana, CA 92701
Procedures Most Often Billed to Medicare
397 services · 355 patients · 8 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
25 | As often as other peers in Physician Assistant |
| Influenza vaccine, inactivated | Treatment | 90653 |
15 | As often as other peers in Physician Assistant |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
174 | More often than most peers in Physician Assistant |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
121 | More often than most peers in Physician Assistant |
| Urinalysis, manual test | Lab test | 81002 |
19 | As often as other peers in Physician Assistant |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
16 | Less often than most peers in Physician Assistant |
| Administration of influenza virus vaccine | Billing code | G0008 |
16 | As often as other peers in Physician Assistant |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
11 | Less often than most peers in Physician Assistant |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 3
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other physician assistants in Los Alamitos 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2020 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Tammy T. Nguyen's specialty?
Tammy T. Nguyen is a physician assistant in Los Alamitos, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Tammy T. Nguyen?
Tammy T. Nguyen is listed at 3460 Katella Ave, Los Alamitos, CA 90720. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Tammy T. Nguyen?
The number on file is (562) 594-6599. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Tammy T. Nguyen's NPI number?
Tammy T. Nguyen's National Provider Identifier is 1326682428. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Tammy T. Nguyen's education?
Tammy T. Nguyen attended Other, graduating in 2020. This comes from the CMS National Downloadable File.
CMS public data
How long has Tammy T. Nguyen been practicing?
Tammy T. Nguyen has 6 years experience. Calculated from a graduation year of 2020, reported in the CMS National Downloadable File.
CMS public data
What is Tammy T. Nguyen known for?
According to Medicare billing data, Tammy T. Nguyen provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and influenza vaccine, inactivated, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Tammy T. Nguyen confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Tammy T. Nguyen. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.