Ngocbich Nguyen, MD
NPI 1578663787 · Internal Medicine Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ngocbich Nguyen, MD is a Internal Medicine Physician provider in San Diego, CA (NPI 1578663787).
Provider details
- NPI number
- 1578663787
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- WA77428B (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
19 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
655 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 111 | $97 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 110 | $135 |
| Insertion of Needle Into Vein (3 Years Or Older)36410 | 93 | $19 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 83 | $16 |
| Admn Sarscov2 Vacc 1 Dose90480 | 54 | $46 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 48 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 45 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 134 | 46 |
| Amlodipine Besylate | 74 | 22 |
| Losartan Potassium | 55 | 17 |
| Semaglutidebrand: Ozempic | 52 | — |
| Levothyroxine Sodiumbrand: Synthroid | 44 | 16 |
| Montelukast Sodium | 40 | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$578 across 25 records (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
- 2006-09-25
- Last updated
- 2012-08-01
Frequently asked questions
- What is Ngocbich Nguyen's NPI number?
- Ngocbich Nguyen's National Provider Identifier (NPI) is 1578663787, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ngocbich Nguyen's specialty?
- Ngocbich Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ngocbich Nguyen located?
- Ngocbich Nguyen's practice location on file with NPPES is 4060 Fourth Ave, San Diego, CA 92103-2116.
- What is Ngocbich Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Ngocbich Nguyen is (619) 298-2900.
- Does Ngocbich Nguyen accept Medicare?
- Ngocbich Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ngocbich Nguyen's NPI active?
- Yes — Ngocbich Nguyen's NPI (1578663787) is active in the NPPES registry as of the last update on 2012-08-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.