Lorelei Opene, PA-C
NPI 1659350445 · Physician Assistant · Mission Viejo, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lorelei Opene, PA-C is a Physician Assistant provider in Mission Viejo, CA (NPI 1659350445).
Provider details
- NPI number
- 1659350445
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- PA15204 (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
20 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
378 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 | 205 | $84 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 71 | $118 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 68 | $102 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 18 | $153 |
| New Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 15 Minutes Or More99202 | 16 | $67 |
Typical Medicare-allowed amounts for these services range $67–$153 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 182 | 181 |
| Famotidine | 151 | 50 |
| Pantoprazole Sodium | 96 | 30 |
| Omeprazole | 95 | 29 |
| Linaclotidebrand: Linzess | 20 | — |
| Colesevelam Hcl | 18 | — |
| Lactulose | 13 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$269 across 12 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
- 2006-01-11
- Last updated
- 2020-10-28
- Certified
- 2020-10-28
Frequently asked questions
- What is Lorelei Opene's NPI number?
- Lorelei Opene's National Provider Identifier (NPI) is 1659350445, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lorelei Opene's specialty?
- Lorelei Opene is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Lorelei Opene located?
- Lorelei Opene's practice location on file with NPPES is 27871 Medical Center Rd, Mission Viejo, CA 92691-6404.
- What is Lorelei Opene's phone number?
- The practice phone number listed in the NPPES registry for Lorelei Opene is (949) 364-5090.
- Does Lorelei Opene accept Medicare?
- Lorelei Opene is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lorelei Opene's NPI active?
- Yes — Lorelei Opene's NPI (1659350445) is active in the NPPES registry as of the last update on 2020-10-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.