Amy Horan, OPA-C
NPI 1821372871 · Physician Assistant · Vallejo, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Amy Horan, OPA-C is a Physician Assistant provider in Vallejo, CA (NPI 1821372871).
Provider details
- NPI number
- 1821372871
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- OPA-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- 1161 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Other Service Providers
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
14 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
172 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 88 | $58 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 38 | $86 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 32 | $34 |
| Urinalysis, Manual Test81002 | 14 | $3 |
Typical Medicare-allowed amounts for these services range $3–$86 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 72 | 72 |
| Prednisone | 49 | 48 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 30 | 29 |
| Doxycycline Hyclate | 28 | 28 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 27 | 26 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 23 | 22 |
| Azithromycin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-10-07
- Last updated
- 2023-06-29
Frequently asked questions
- What is Amy Horan's NPI number?
- Amy Horan's National Provider Identifier (NPI) is 1821372871, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Amy Horan's specialty?
- Amy Horan is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Amy Horan located?
- Amy Horan's practice location on file with NPPES is 100 Hospital Dr Ste 303, Vallejo, CA 94589-2583.
- What is Amy Horan's phone number?
- The practice phone number listed in the NPPES registry for Amy Horan is (707) 645-7210.
- Does Amy Horan accept Medicare?
- Amy Horan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Amy Horan's NPI active?
- Yes — Amy Horan's NPI (1821372871) is active in the NPPES registry as of the last update on 2023-06-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.