Karen Stephanie Marquez, FNP-C
NPI 1558195073 · Family Nurse Practitioner · Fresno, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Stephanie Marquez, FNP-C is a Family Nurse Practitioner provider in Fresno, CA (NPI 1558195073).
Provider details
- NPI number
- 1558195073
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- 95030924 (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
1 yr in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$13 across 1 record (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)
- 3656 W Shaw AveFresno, CA 93711-3231Phone: (559) 388-8430
Registry dates
- Enumerated
- 2024-08-27
- Last updated
- 2025-09-23
- Certified
- 2025-09-23
Frequently asked questions
- What is Karen Stephanie Marquez's NPI number?
- Karen Stephanie Marquez's National Provider Identifier (NPI) is 1558195073, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Stephanie Marquez's specialty?
- Karen Stephanie Marquez is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Stephanie Marquez located?
- Karen Stephanie Marquez's practice location on file with NPPES is 1570 E Herndon Ave, Fresno, CA 93720-3303.
- What is Karen Stephanie Marquez's phone number?
- The practice phone number listed in the NPPES registry for Karen Stephanie Marquez is (559) 603-7240.
- Does Karen Stephanie Marquez accept Medicare?
- Karen Stephanie Marquez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Stephanie Marquez's NPI active?
- Yes — Karen Stephanie Marquez's NPI (1558195073) is active in the NPPES registry as of the last update on 2025-09-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.