Marlena Girouard, FNP-C
NPI 1548857162 · Family Nurse Practitioner · Costa Mesa, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marlena Girouard, FNP-C is a Family Nurse Practitioner provider in Costa Mesa, CA (NPI 1548857162).
Provider details
- NPI number
- 1548857162
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-C
- Sex
- Female
- Sole proprietor
- No
- License
- 95015862 (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
5 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
12 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 12 | $86 |
Typical Medicare-allowed amounts for these services range $86–$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 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 132 | 53 |
| Letrozole | 59 | 23 |
| Lipase/Protease/Amylasebrand: Creon | 55 | 17 |
| Lidocaine/Prilocainebrand: Lidocaine-Prilocaine | 47 | 32 |
| Ondansetronbrand: Ondansetron Odt | 38 | 23 |
| Tamoxifen Citrate | 36 | 13 |
| Ondansetron Hcl | 25 | 16 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$676 across 21 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)
- 101 the City Dr SOrange, CA 92868-3201Phone: (949) 999-2400Fax: (949) 999-2405
Registry dates
- Enumerated
- 2020-12-29
- Last updated
- 2024-10-14
- Certified
- 2024-10-14
Frequently asked questions
- What is Marlena Girouard's NPI number?
- Marlena Girouard's National Provider Identifier (NPI) is 1548857162, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marlena Girouard's specialty?
- Marlena Girouard is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marlena Girouard located?
- Marlena Girouard's practice location on file with NPPES is 1640 Newport Blvd Ste 400, Costa Mesa, CA 92627-3786.
- What is Marlena Girouard's phone number?
- The practice phone number listed in the NPPES registry for Marlena Girouard is (949) 999-2400.
- Does Marlena Girouard accept Medicare?
- Marlena Girouard is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marlena Girouard's NPI active?
- Yes — Marlena Girouard's NPI (1548857162) is active in the NPPES registry as of the last update on 2024-10-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.