Ha Nguyen, M.D.
NPI 1811309586 · Anatomic Pathology & Clinical Pathology Physician · Oakland, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ha Nguyen, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Oakland, CA (NPI 1811309586).
Provider details
- NPI number
- 1811309586
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 20294 (FL)
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
12 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
516 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) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 204 | $35 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 150 | $25 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 94 | $33 |
| Special Stained Specimen Slides to Examine Tissue Including Interpretation and Report88313 | 43 | $11 |
| Preparation of Tissue for Examination By Removing Any Calcium Present88311 | 14 | $11 |
| Flow Cytometry Technique for Dna Or Cell Analysis, 16 Or More Markers88189 | 11 | $79 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$23 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 (1)
- 1414 Kuhl AveOrlando, FL 32806-2008Phone: (321) 841-8933Fax: (321) 843-6219
Registry dates
- Enumerated
- 2014-05-28
- Last updated
- 2024-06-20
- Certified
- 2024-06-20
Frequently asked questions
- What is Ha Nguyen's NPI number?
- Ha Nguyen's National Provider Identifier (NPI) is 1811309586, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ha Nguyen's specialty?
- Ha Nguyen is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Ha Nguyen located?
- Ha Nguyen's practice location on file with NPPES is 275 W Macarthur Blvd, Oakland, CA 94611-5641.
- What is Ha Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Ha Nguyen is (571) 449-6688.
- Does Ha Nguyen accept Medicare?
- Ha Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ha Nguyen's NPI active?
- Yes — Ha Nguyen's NPI (1811309586) is active in the NPPES registry as of the last update on 2024-06-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.