Karen Stephanie Vargas Marquez, FNP-C
Family Nurse Practitioner · Fresno, CA
Karen Stephanie Vargas Marquez, FNP-C is a family nurse practitioner with a practice address in Fresno, California, and NPI 1558195073, issued on Aug 27, 2024. Check the license (California 95030924, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen Stephanie Vargas Marquez
- Credential
- FNP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 95030924 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1570 E Herndon Ave, Fresno, CA 93720
- Phone
- (559) 603-7240
- Enumerated
- Aug 27, 2024
- Record last updated
- Sep 23, 2025
- Medicare enrollment
- Enrolled (PECOS I20250909002869); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
Also registered at 1570 E Herndon Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sandeep ChouhanFamily Nurse Practitioner1780308874
- Wilfred Derksen, MDPediatrics Physician1003801267
- Selena Fong, PHARMD.Pharmacist1487315172
Verify Karen Stephanie Vargas Marquez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95030924Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average family nurse practitioner in 2024
28 Medicare Part D claims for 21 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $13.20
1 payment: food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Community Health PartnersFresno, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen Stephanie Vargas Marquez among 16,966 family nurse practitioner records in California
Karen Stephanie Vargas Marquez, FNP-C is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 83% of them.
- NPI issued2024 · 83% of these records are older, 10% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2024 · median 2019 among the 6,793 with a school on file
- Record last updated2025 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
393 family nurse practitioner records list a practice address in Fresno
They are 393 of the 19,440 NPPES records with a practice address in Fresno, and 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in Fresno → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Shelley Ailanjian, F.N.P.Fresno, CA 937201174741714
- Gregory Chernekoff, NPFresno, CA 937201730335233
- Peter Garcia, F.N.P.Fresno, CA 937201205832763
- Lorraine Gyor, FNPFresno, CA 937201295803963
- Karen Heustis, FNPCFresno, CA 937201174715825
- Cecil Litiema, NP-CFresno, CA 937201609908243
- Gloria Lovering, N.P.Fresno, CA 937201992715320
- Sheila Mallory, N. P.Fresno, CA 937201003000712
Common questions
What is Karen Stephanie Vargas Marquez, FNP-C's NPI number?
Karen Stephanie Vargas Marquez, FNP-C's National Provider Identifier (NPI) is 1558195073, issued on Aug 27, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Karen Stephanie Vargas Marquez, FNP-C located?
The NPPES record lists a practice address at 1570 E Herndon Ave, Fresno, CA, 93720. Phone: (559) 603-7240. Providers update this record themselves, so call before visiting.
How can I verify Karen Stephanie Vargas Marquez, FNP-C's license?
NPPES lists California license number 95030924, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Karen Stephanie Vargas Marquez, FNP-C prescribe under Medicare Part D?
In 2024, Karen Stephanie Vargas Marquez, FNP-C had 28 Medicare Part D claims for 21 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.