Cindy Nguyen, D.O.
NPI 1558893297 · Allergy & Immunology Physician · Mountain View, CA
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cindy Nguyen, D.O. is a Allergy & Immunology Physician provider in Mountain View, CA (NPI 1558893297).
Provider details
- NPI number
- 1558893297
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- 20A16920 (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 tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,326 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Test for Allergy Using Allergenic Extract95004 | 960 | $5 |
| Professional Service for Multiple Injections of Allergen95117 | 191 | $17 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 75 | $197 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 43 | $155 |
| Professional Service for Single Injection of Allergen95115 | 36 | $14 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 21 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azelastine Hcl | 20 | 11 |
| Fluticasone Propionate | 18 | — |
| Montelukast Sodium | 14 | — |
| Dupilumabbrand: Dupixent Pen | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 15720 Winchester BlvdAllergy/ImmunologyLos Gatos, CA 95030Phone: (650) 934-7000
Registry dates
- Enumerated
- 2017-03-31
- Last updated
- 2024-12-23
- Certified
- 2024-12-18
Frequently asked questions
- What is Cindy Nguyen's NPI number?
- Cindy Nguyen's National Provider Identifier (NPI) is 1558893297, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cindy Nguyen's specialty?
- Cindy Nguyen is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Cindy Nguyen located?
- Cindy Nguyen's practice location on file with NPPES is 701 E El Camino Real, Mountain View, CA 94040.
- What is Cindy Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Cindy Nguyen is (650) 934-7000.
- Does Cindy Nguyen accept Medicare?
- Cindy Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cindy Nguyen's NPI active?
- Yes — Cindy Nguyen's NPI (1558893297) is active in the NPPES registry as of the last update on 2024-12-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.