Huy Nguyen, MD
NPI 1770659252 · Hematology & Oncology Physician · Sunnyvale, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Huy Nguyen, MD is a Hematology & Oncology Physician provider in Sunnyvale, CA (NPI 1770659252).
Provider details
- NPI number
- 1770659252
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A87421 (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
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
2,704 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 562 | $217 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 323 | $19 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 227 | $155 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 204 | $177 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, 1 Hour Or Less96365 | 202 | $85 |
| Injection of Additional New Drug Or Substance Into Vein |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 206 | 35 |
| Prednisone | 96 | 25 |
| Acyclovir | 84 | 28 |
| Prochlorperazine Maleate | 76 | 41 |
| Hydroxyurea | 60 | 20 |
| Abiraterone Acetate | 58 | — |
| Letrozole | 52 | 14 |
| Dexamethasone | 47 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$374 across 7 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
- 2006-11-28
- Last updated
- 2019-06-04
Frequently asked questions
- What is Huy Nguyen's NPI number?
- Huy Nguyen's National Provider Identifier (NPI) is 1770659252, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Huy Nguyen's specialty?
- Huy Nguyen is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Huy Nguyen located?
- Huy Nguyen's practice location on file with NPPES is 301 Old San Francisco Rd, Sunnyvale, CA 94086-6386.
- What is Huy Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Huy Nguyen is (408) 730-2800.
- Does Huy Nguyen accept Medicare?
- Huy Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Huy Nguyen's NPI active?
- Yes — Huy Nguyen's NPI (1770659252) is active in the NPPES registry as of the last update on 2019-06-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.