Patrick Pak, PA
NPI 1861611386 · Physician Assistant · Corona, CA
Enrolled with Medicare as Order and Referring Only - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Patrick Pak, PA is a Physician Assistant provider in Corona, CA (NPI 1861611386).
Provider details
- NPI number
- 1861611386
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Male
- Sole proprietor
- No
- License
- PA 15188 (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 tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metformin Hcl | 69 | 33 |
| Losartan Potassium | 59 | 23 |
| Atorvastatin Calcium | 53 | 25 |
| Amlodipine Besylate | 46 | 16 |
| Lisinopril | 46 | 18 |
| Levothyroxine Sodium | 37 | 11 |
| Tamsulosin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$127 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
Registry dates
- Enumerated
- 2007-04-24
- Last updated
- 2013-12-31
Frequently asked questions
- What is Patrick Pak's NPI number?
- Patrick Pak's National Provider Identifier (NPI) is 1861611386, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patrick Pak's specialty?
- Patrick Pak is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Patrick Pak located?
- Patrick Pak's practice location on file with NPPES is 1307 W 6th St, Corona, CA 92882-3294.
- What is Patrick Pak's phone number?
- The practice phone number listed in the NPPES registry for Patrick Pak is (951) 278-8910.
- Does Patrick Pak accept Medicare?
- Patrick Pak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Patrick Pak's NPI active?
- Yes — Patrick Pak's NPI (1861611386) is active in the NPPES registry as of the last update on 2013-12-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.