Ronald Nguyen, MD
NPI 1720436736 · Anesthesiology Physician · Santa Ana, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ronald Nguyen, MD is a Anesthesiology Physician provider in Santa Ana, CA (NPI 1720436736).
Provider details
- NPI number
- 1720436736
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 142461 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
137 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) |
|---|---|---|
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 34 | $143 |
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 22 | $157 |
| Anesthesia for Procedure on Small and Large Bowel Using an Endoscope00813 | 19 | $174 |
| Injection of Substance Into Lower Spine Canal62322 | 19 | $81 |
| Injection of Anesthetic Agent And/Or Steroid Into Thigh Nerve (femoral Nerve)64447 | 15 | $41 |
| Injection of Local Anesthetic for Abdominal Wall Pain Control on Both Sides Using Imaging Guidance64488 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$122 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
Registry dates
- Enumerated
- 2016-05-31
- Last updated
- 2016-05-31
Frequently asked questions
- What is Ronald Nguyen's NPI number?
- Ronald Nguyen's National Provider Identifier (NPI) is 1720436736, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ronald Nguyen's specialty?
- Ronald Nguyen is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Ronald Nguyen located?
- Ronald Nguyen's practice location on file with NPPES is 2802 S Diamond St, Santa Ana, CA 92704-6015.
- What is Ronald Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Ronald Nguyen is (714) 924-4830.
- Does Ronald Nguyen accept Medicare?
- Ronald Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ronald Nguyen's NPI active?
- Yes — Ronald Nguyen's NPI (1720436736) is active in the NPPES registry as of the last update on 2016-05-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.