Erin Duffy, PA-C
NPI 1518536119 · Physician Assistant · Capitola, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Erin Duffy, PA-C is a Physician Assistant provider in Capitola, CA (NPI 1518536119).
Provider details
- NPI number
- 1518536119
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- PA59654 (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 tenure25% of score
5 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,232 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 344 | $86 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 174 | $106 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 126 | $120 |
| Urinalysis, Manual Test81002 | 119 | $3 |
| Detection Test By Immunoassay With Direct Visual Observation for Severe Acute Respiratory Syndrome Coronavirus 2 (covid-19)87811 | 59 | $41 |
| X-Ray of Chest, 2 Views71046 | 58 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 72 | 71 |
| Azithromycin | 70 | 68 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 59 | 59 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 45 | 42 |
| Prednisone | 36 | 35 |
| Nirmatrelvir/Ritonavirbrand: Paxlovid | 35 | 35 |
| Doxycycline Hyclate | 33 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$118 across 1 record (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
- 2021-06-18
- Last updated
- 2021-10-05
- Certified
- 2021-10-05
Frequently asked questions
- What is Erin Duffy's NPI number?
- Erin Duffy's National Provider Identifier (NPI) is 1518536119, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Erin Duffy's specialty?
- Erin Duffy is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Erin Duffy located?
- Erin Duffy's practice location on file with NPPES is 1820 41st Ave Ste C, Capitola, CA 95010-2516.
- What is Erin Duffy's phone number?
- The practice phone number listed in the NPPES registry for Erin Duffy is (831) 684-7611.
- Does Erin Duffy accept Medicare?
- Erin Duffy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Erin Duffy's NPI active?
- Yes — Erin Duffy's NPI (1518536119) is active in the NPPES registry as of the last update on 2021-10-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.