Patty Chi, MD
NPI 1407898323 · Allergy & Immunology Physician · Mountain View, CA
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Patty Chi, MD is a Allergy & Immunology Physician provider in Mountain View, CA (NPI 1407898323).
Provider details
- NPI number
- 1407898323
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A82242 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
20 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
1,840 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) |
|---|---|---|
| Test for Allergy Using Allergenic Extract95004 | 917 | $5 |
| Professional Service for Multiple Injections of Allergen95117 | 400 | $17 |
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 280 | $20 |
| Professional Service for Single Injection of Allergen95115 | 92 | $14 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 91 | $155 |
| Test to Measure the Level of Nitric Oxide Gas95012 | 26 | $26 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 44 | 13 |
| Azelastine Hcl | 42 | 14 |
| Montelukast Sodium | 33 | — |
| Fluticasone Propionate | 30 | 15 |
| Fluticasone Propion/Salmeterolbrand: Advair Hfa | 29 | — |
| Dupilumabbrand: Dupixent Syringe | 27 | — |
| Ipratropium Bromide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$159 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
- 2006-06-12
- Last updated
- 2022-12-21
- Certified
- 2022-12-21
Frequently asked questions
- What is Patty Chi's NPI number?
- Patty Chi's National Provider Identifier (NPI) is 1407898323, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patty Chi's specialty?
- Patty Chi is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Patty Chi located?
- Patty Chi's practice location on file with NPPES is 701 E El Camino Real, Mountain View, CA 94040-2833.
- What is Patty Chi's phone number?
- The practice phone number listed in the NPPES registry for Patty Chi is (650) 934-7888.
- Does Patty Chi accept Medicare?
- Patty Chi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Patty Chi's NPI active?
- Yes — Patty Chi's NPI (1407898323) is active in the NPPES registry as of the last update on 2022-12-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.