Joyce Lazarus, M.D.
NPI 1831143056 · Internal Medicine Physician · Norco, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joyce Lazarus, M.D. is a Internal Medicine Physician provider in Norco, CA (NPI 1831143056).
Provider details
- NPI number
- 1831143056
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A87020 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
332 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 | 88 | $132 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 56 | $94 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 48 | $98 |
| Advance Care Planning, First 30 Minutes99497 | 42 | $83 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 33 | $133 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 27 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 56 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 316 | 107 |
| Losartan Potassium | 129 | 43 |
| Amlodipine Besylate | 126 | 51 |
| Lisinopril | 106 | 43 |
| Levothyroxine Sodium | 104 | 36 |
| Fluticasone Propionate | 97 | 46 |
| Hydrochlorothiazide | 72 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$363 across 19 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
Additional practice locations (1)
- 12523 Limonite Ave Ste 400Eastvale, CA 91752-3666Phone: (951) 808-6300Fax: (657) 215-4553
Registry dates
- Enumerated
- 2006-05-20
- Last updated
- 2025-10-01
- Certified
- 2025-10-01
Frequently asked questions
- What is Joyce Lazarus's NPI number?
- Joyce Lazarus's National Provider Identifier (NPI) is 1831143056, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joyce Lazarus's specialty?
- Joyce Lazarus is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joyce Lazarus located?
- Joyce Lazarus's practice location on file with NPPES is 1901 Town and Country Dr Ste 104, Norco, CA 92860-3611.
- What is Joyce Lazarus's phone number?
- The practice phone number listed in the NPPES registry for Joyce Lazarus is (951) 737-8141.
- Does Joyce Lazarus accept Medicare?
- Joyce Lazarus is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joyce Lazarus's NPI active?
- Yes — Joyce Lazarus's NPI (1831143056) is active in the NPPES registry as of the last update on 2025-10-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.