Mark Simpson, PA-C
NPI 1285087577 · Physician Assistant · Brawley, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Simpson, PA-C is a Physician Assistant provider in Brawley, CA (NPI 1285087577).
Provider details
- NPI number
- 1285087577
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
- Physician Assistant363A00000X
Physician Assistants & Advanced Practice Nursing Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
267 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 89 | $144 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 76 | $99 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 66 | $7 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 13 | $142 |
| Electrocardiogram (ecg) 1 to 3 Leads With Review By Physician Only93042 | 12 | $6 |
| Critical Care, First 30-74 Minutes99291 | 11 |
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 |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 51 | 50 |
| Ondansetronbrand: Ondansetron Odt | 32 | 32 |
| Prednisone | 27 | 27 |
| Ibuprofen | 23 | 22 |
| Cephalexin | 21 | 21 |
| Cefdinir | 16 | 16 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 15 |
Practice location
Mailing address
Additional practice locations (1)
- 309 E 2nd StPA OfficePomona, CA 91766-1854Phone: (909) 623-9116
Registry dates
- Enumerated
- 2016-07-21
- Last updated
- 2020-10-14
- Certified
- 2020-10-14
Frequently asked questions
- What is Mark Simpson's NPI number?
- Mark Simpson's National Provider Identifier (NPI) is 1285087577, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Simpson's specialty?
- Mark Simpson is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mark Simpson located?
- Mark Simpson's practice location on file with NPPES is 207 W Legion Rd, Brawley, CA 92227-7780.
- What is Mark Simpson's phone number?
- The practice phone number listed in the NPPES registry for Mark Simpson is (760) 351-3333.
- Does Mark Simpson accept Medicare?
- Mark Simpson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Simpson's NPI active?
- Yes — Mark Simpson's NPI (1285087577) is active in the NPPES registry as of the last update on 2020-10-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.