Stacy Zambrano
NPI 1992094171 · Internal Medicine Physician · Concord, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stacy Zambrano is a Internal Medicine Physician provider in Concord, CA (NPI 1992094171).
Provider details
- NPI number
- 1992094171
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- Yes
- License
- A125232 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
15 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 118 | 47 |
| Metformin Hcl | 78 | 31 |
| Amlodipine Besylate | 76 | 28 |
| Losartan Potassium | 49 | 20 |
| Lisinopril | 48 | 21 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 47 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$21 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)
- 4150 V St # 1110Sacramento, CA 95817-1460Phone: (619) 370-3316
Registry dates
- Enumerated
- 2011-03-29
- Last updated
- 2023-01-04
- Certified
- 2023-01-03
Frequently asked questions
- What is Stacy Zambrano's NPI number?
- Stacy Zambrano's National Provider Identifier (NPI) is 1992094171, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stacy Zambrano's specialty?
- Stacy Zambrano is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stacy Zambrano located?
- Stacy Zambrano's practice location on file with NPPES is 2000 Sierra Road, Concord, CA 94518.
- What is Stacy Zambrano's phone number?
- The practice phone number listed in the NPPES registry for Stacy Zambrano is (925) 363-2000.
- Does Stacy Zambrano accept Medicare?
- Stacy Zambrano is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stacy Zambrano's NPI active?
- Yes — Stacy Zambrano's NPI (1992094171) is active in the NPPES registry as of the last update on 2023-01-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.