Christina Zaro, MD
NPI 1538171400 · Family Medicine Physician · King City, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christina Zaro, MD is a Family Medicine Physician provider in King City, CA (NPI 1538171400).
Provider details
- NPI number
- 1538171400
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A67733 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
20 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) |
|---|---|---|
| Hemoglobin A1c Level83036 | 20 | $10 |
Typical Medicare-allowed amounts for these services range $10–$10 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 50 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 258 | 87 |
| Metformin Hcl | 146 | 57 |
| Lisinopril | 138 | 48 |
| Gabapentin | 115 | 31 |
| Amlodipine Besylate | 98 | 35 |
| Empagliflozinbrand: Jardiance | 69 | 18 |
| Omeprazole |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-12
- Last updated
- 2008-12-15
Frequently asked questions
- What is Christina Zaro's NPI number?
- Christina Zaro's National Provider Identifier (NPI) is 1538171400, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christina Zaro's specialty?
- Christina Zaro is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Christina Zaro located?
- Christina Zaro's practice location on file with NPPES is 400 Canal St, King City, CA 93930-3458.
- What is Christina Zaro's phone number?
- The practice phone number listed in the NPPES registry for Christina Zaro is (831) 385-1280.
- Does Christina Zaro accept Medicare?
- Christina Zaro is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christina Zaro's NPI active?
- Yes — Christina Zaro's NPI (1538171400) is active in the NPPES registry as of the last update on 2008-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.