Mary Alessi, PA-C
NPI 1962711838 · Physician Assistant · Irvine, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Alessi, PA-C is a Physician Assistant provider in Irvine, CA (NPI 1962711838).
Provider details
- NPI number
- 1962711838
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- PA21093 (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
15 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,027 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 565 | $102 |
| Ultrasound Scan of Chest76604 | 200 | $23 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 143 | $150 |
| Aspiration of Fluid From Chest Cavity Using Imaging Guidance32555 | 63 | $92 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 29 | $81 |
| Aspiration of Fluid From Chest Cavity Using Imaging Guidance32555 | 27 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$223 across 6 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
Additional practice locations (1)
- 7955 Westminster BlvdWestminster, CA 92683-4001Phone: (714) 379-3221Fax: (714) 379-3211
Registry dates
- Enumerated
- 2010-09-27
- Last updated
- 2025-10-30
- Certified
- 2025-10-30
Frequently asked questions
- What is Mary Alessi's NPI number?
- Mary Alessi's National Provider Identifier (NPI) is 1962711838, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Alessi's specialty?
- Mary Alessi is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Alessi located?
- Mary Alessi's practice location on file with NPPES is 1000 Fivepoint, Irvine, CA 92618-2621.
- What is Mary Alessi's phone number?
- The practice phone number listed in the NPPES registry for Mary Alessi is (949) 671-8000.
- Does Mary Alessi accept Medicare?
- Mary Alessi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Alessi's NPI active?
- Yes — Mary Alessi's NPI (1962711838) is active in the NPPES registry as of the last update on 2025-10-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.