Kristin Viola, PA
NPI 1619517778 · Physician Assistant · Orange, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kristin Viola, PA is a Physician Assistant provider in Orange, CA (NPI 1619517778).
Provider details
- NPI number
- 1619517778
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Female
- Sole proprietor
- No
- License
- 57659 (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
6 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
18 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) |
|---|---|---|
| Biopsy and Aspiration of Bone Marrow Sample for Diagnosis38222 | 18 | $66 |
Typical Medicare-allowed amounts for these services range $66–$66 (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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 84 | 26 |
| Letrozole | 82 | 25 |
| Apixabanbrand: Eliquis | 68 | 21 |
| Palbociclibbrand: Ibrance | 39 | — |
| Acyclovir | 26 | — |
| Lenalidomidebrand: Revlimid | 20 | — |
| Ruxolitinib Phosphatebrand: Jakafi | 19 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,465 across 64 records (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
- 2020-01-07
- Last updated
- 2024-07-16
- Certified
- 2024-07-16
Frequently asked questions
- What is Kristin Viola's NPI number?
- Kristin Viola's National Provider Identifier (NPI) is 1619517778, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kristin Viola's specialty?
- Kristin Viola is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Kristin Viola located?
- Kristin Viola's practice location on file with NPPES is 101 the City Dr S, Orange, CA 92868-3201.
- What is Kristin Viola's phone number?
- The practice phone number listed in the NPPES registry for Kristin Viola is (714) 456-8888.
- Does Kristin Viola accept Medicare?
- Kristin Viola is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kristin Viola's NPI active?
- Yes — Kristin Viola's NPI (1619517778) is active in the NPPES registry as of the last update on 2024-07-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.