Derek Asimus
NPI 1659738516 · Physician Assistant · Pasadena, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Derek Asimus is a Physician Assistant provider in Pasadena, CA (NPI 1659738516).
Provider details
- NPI number
- 1659738516
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 53155 (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 tenure28% of score
10 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
281 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) |
|---|---|---|
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 68 | $151 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 36 | $83 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 31 | $8 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 29 | $117 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 23 | $102 |
| Blood Test, Basic Group of Blood Chemicals (calcium, Ionized) |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Doxycycline Hyclate | 57 | 57 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 56 | 56 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 48 | 47 |
| Cephalexin | 32 | 32 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 26 | 23 |
| Azithromycin | 21 | 21 |
| Ofloxacin | 19 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-01-24
- Last updated
- 2023-06-20
- Certified
- 2023-06-20
Frequently asked questions
- What is Derek Asimus's NPI number?
- Derek Asimus's National Provider Identifier (NPI) is 1659738516, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Derek Asimus's specialty?
- Derek Asimus is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Derek Asimus located?
- Derek Asimus's practice location on file with NPPES is 797 S Fair Oaks Ave, Pasadena, CA 91105-2617.
- What is Derek Asimus's phone number?
- The practice phone number listed in the NPPES registry for Derek Asimus is (626) 797-2244.
- Does Derek Asimus accept Medicare?
- Derek Asimus is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Derek Asimus's NPI active?
- Yes — Derek Asimus's NPI (1659738516) is active in the NPPES registry as of the last update on 2023-06-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.