Benjamin Simpson, P.A.
NPI 1013224369 · Medical Physician Assistant · Riverdale, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Benjamin Simpson, P.A. is a Medical Physician Assistant provider in Riverdale, CA (NPI 1013224369).
Provider details
- NPI number
- 1013224369
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- P.A.
- Sex
- Male
- Sole proprietor
- No
- License
- PA21133 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
1 documented practice location
- 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 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 70 | 32 |
| Metformin Hcl | 62 | 25 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 47 | 28 |
| Lisinopril | 37 | 18 |
| Prednisone | 29 | 28 |
| Levothyroxine Sodium | 27 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$65 across 3 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
- 2010-09-08
- Last updated
- 2013-02-01
Frequently asked questions
- What is Benjamin Simpson's NPI number?
- Benjamin Simpson's National Provider Identifier (NPI) is 1013224369, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Benjamin Simpson's specialty?
- Benjamin Simpson is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Benjamin Simpson located?
- Benjamin Simpson's practice location on file with NPPES is 3567 W. Mt. Whitney Ave., Riverdale, CA 93656.
- What is Benjamin Simpson's phone number?
- The practice phone number listed in the NPPES registry for Benjamin Simpson is (559) 867-4416.
- Does Benjamin Simpson accept Medicare?
- Benjamin Simpson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Benjamin Simpson's NPI active?
- Yes — Benjamin Simpson's NPI (1013224369) is active in the NPPES registry as of the last update on 2013-02-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.