Caroline Nguyen, P.A.
NPI 1669897047 · Physician Assistant · Orange, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Caroline Nguyen, P.A. is a Physician Assistant provider in Orange, CA (NPI 1669897047).
Provider details
- NPI number
- 1669897047
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- P.A.
- Sex
- Female
- Sole proprietor
- No
- License
- 51442 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
32 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 | 32 | $97 |
Typical Medicare-allowed amounts for these services range $97–$97 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 130 | 58 |
| Ciprofloxacin Hcl | 118 | 104 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 84 | 78 |
| Trospium Chloride | 42 | 16 |
| Alfuzosin Hclbrand: Alfuzosin Hcl Er | 42 | 17 |
| Finasteride | 35 | 14 |
| Dutasteride | 26 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$14 across 1 record (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 (3)
- 16300 Sand Canyon Ave. Suite 405Irvine, CA 92618Phone: (949) 825-7650Fax: (949) 825-7648
- 16300 Sand Canyon Ave. Suite 405Irvine, CA 92618Phone: (949) 825-7650Fax: (949) 825-7648
- 720 N Tustin Ave Ste 104Santa Ana, CA 92705-3606Phone: (949) 825-7650Fax: (949) 825-7648
Registry dates
- Enumerated
- 2014-02-21
- Last updated
- 2023-03-21
- Certified
- 2023-03-21
Frequently asked questions
- What is Caroline Nguyen's NPI number?
- Caroline Nguyen's National Provider Identifier (NPI) is 1669897047, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Caroline Nguyen's specialty?
- Caroline Nguyen is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Caroline Nguyen located?
- Caroline Nguyen's practice location on file with NPPES is 101 the City Dr S Bldg 29, Orange, CA 92868-3201.
- What is Caroline Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Caroline Nguyen is (714) 456-7005.
- Does Caroline Nguyen accept Medicare?
- Caroline Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Caroline Nguyen's NPI active?
- Yes — Caroline Nguyen's NPI (1669897047) is active in the NPPES registry as of the last update on 2023-03-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.