Derrick Stephan, PA-C
NPI 1891932950 · Surgical Physician Assistant · San Juan Capistrano, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Derrick Stephan, PA-C is a Surgical Physician Assistant provider in San Juan Capistrano, CA (NPI 1891932950).
Provider details
- NPI number
- 1891932950
- Entity type
- Individual
- Primary specialty
- Surgical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
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
17 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
244 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) |
|---|---|---|
| Computer-Assisted Surgery for Muscle and Bone Procedure20985 | 82 | $53 |
| Incision Or Removal of Spinal Nerve64772 | 64 | $41 |
| Replacement of Knee Joint, Both Sides of Knee27447 | 61 | $183 |
| Replacement of Thigh Bone and Hip Joint With Prosthesis27130 | 37 | $183 |
Typical Medicare-allowed amounts for these services range $41–$183 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-01-12
- Last updated
- 2024-09-18
- Certified
- 2024-09-18
Frequently asked questions
- What is Derrick Stephan's NPI number?
- Derrick Stephan's National Provider Identifier (NPI) is 1891932950, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Derrick Stephan's specialty?
- Derrick Stephan is listed in the NPPES registry with a primary specialty of Surgical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Derrick Stephan located?
- Derrick Stephan's practice location on file with NPPES is 33445 Paseo El Lazo, San Juan Capistrano, CA 92675-1003.
- What is Derrick Stephan's phone number?
- The practice phone number listed in the NPPES registry for Derrick Stephan is (949) 338-3133.
- Does Derrick Stephan accept Medicare?
- Derrick Stephan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Derrick Stephan's NPI active?
- Yes — Derrick Stephan's NPI (1891932950) is active in the NPPES registry as of the last update on 2024-09-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.