Joann Nguyen, M.D
NPI 1205177854 · Family Medicine Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joann Nguyen, M.D is a Family Medicine Physician provider in San Jose, CA (NPI 1205177854).
Provider details
- NPI number
- 1205177854
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Female
- Sole proprietor
- No
- License
- A122870 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,850 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 | 1,639 | $106 |
| Insertion of Needle Into Vein (3 Years Or Older)36410 | 162 | $21 |
| Administration of Influenza Virus VaccineG0008 | 49 | $39 |
Typical Medicare-allowed amounts for these services range $21–$106 (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 · 188 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 2,968 | 554 |
| Amlodipine Besylate | 1,743 | 362 |
| Losartan Potassium | 1,559 | 296 |
| Icosapent Ethylbrand: Vascepa | 1,445 | 237 |
| Fluticasone Propionate | 1,164 | 259 |
| Gabapentin | 1,021 | 184 |
| Metformin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,008 across 174 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
Additional practice locations (1)
- 652 E Santa Clara StSan Jose, CA 95112-1931Phone: (408) 294-2868
Registry dates
- Enumerated
- 2013-03-06
- Last updated
- 2025-10-20
- Certified
- 2025-10-20
Frequently asked questions
- What is Joann Nguyen's NPI number?
- Joann Nguyen's National Provider Identifier (NPI) is 1205177854, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joann Nguyen's specialty?
- Joann Nguyen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joann Nguyen located?
- Joann Nguyen's practice location on file with NPPES is 1255 E Santa Clara St, San Jose, CA 95116-2341.
- What is Joann Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Joann Nguyen is (408) 294-2868.
- Does Joann Nguyen accept Medicare?
- Joann Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joann Nguyen's NPI active?
- Yes — Joann Nguyen's NPI (1205177854) is active in the NPPES registry as of the last update on 2025-10-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.