Nancy Tsoi, MD
NPI 1588756910 · Family Medicine Physician · Malibu, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nancy Tsoi, MD is a Family Medicine Physician provider in Malibu, CA (NPI 1588756910).
Provider details
- NPI number
- 1588756910
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A87090 (CA)
Specialties & taxonomies
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
892 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 284 | $90 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 153 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 108 | $50 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 102 | $21 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 62 | $73 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 62 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 137 | 33 |
| Amlodipine Besylate | 130 | 38 |
| Atorvastatin Calcium | 109 | 33 |
| Rosuvastatin Calcium | 100 | 31 |
| Metformin Hcl | 79 | 21 |
| Losartan Potassium | 75 | 21 |
| Lisinopril |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$31 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
Registry dates
- Enumerated
- 2006-09-30
- Last updated
- 2013-01-10
Frequently asked questions
- What is Nancy Tsoi's NPI number?
- Nancy Tsoi's National Provider Identifier (NPI) is 1588756910, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Tsoi's specialty?
- Nancy Tsoi is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nancy Tsoi located?
- Nancy Tsoi's practice location on file with NPPES is 23410 Civic Center Way, Malibu, CA 90265-5909.
- What is Nancy Tsoi's phone number?
- The practice phone number listed in the NPPES registry for Nancy Tsoi is (310) 456-1668.
- Does Nancy Tsoi accept Medicare?
- Nancy Tsoi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nancy Tsoi's NPI active?
- Yes — Nancy Tsoi's NPI (1588756910) is active in the NPPES registry as of the last update on 2013-01-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.