Erin Irene Marquez, FNP
- Medicare services, 2024
- 707
- Medicare patients, 2024
- 220
- Part D claims, 2024
- 576
- Hospital affiliations
- 2
- Industry payments
- $3,274
- Practice address
- 1827 S Court St, Visalia, CA 93277
- Practice phone
- Call (559) 260-6509
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Riverway Medical Group a Medical Corporation
Visalia, California
Find Erin Marquez's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Erin Irene Marquez is a family nurse practitioner in Visalia, California
Erin Marquez practices at Riverway Medical Group a Medical Corporation in Visalia, California.
Erin Marquez's NPI, 1992412290, was assigned on November 4, 2022. Erin Marquez holds California license 95022577.
- NPI
- 1992412290NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3971975848
- NPI enumeration date
- November 4, 2022
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (559) 260-6509
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 30
- Medical school graduation
- 2022
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Erin Irene Marquez practices at Riverway Medical Group a Medical Corporation in Visalia, California
Erin Marquez's primary practice is Riverway Medical Group a Medical Corporation, at 1827 S Court St, Visalia, CA 93277 in Tulare County. The practice phone is (559) 260-6509.
- Riverway Medical Group a Medical Corporation1827 S Court St, Visalia, CA 93277 · Tulare CountyPhone(559) 260-6509
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Erin Irene Marquez is affiliated with 5 sites of care and 2 medical groups
Erin Marquez's primary practice is Riverway Medical Group a Medical Corporation in Visalia, California. Erin Marquez is also affiliated with Kaweah Health Medical Center. The medical group on file is Riverway Medical Care. Dmand AI also links Erin Marquez to 1 more hospital, 1 group practice or clinic, 1 home health agency and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Erin Irene Marquez's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Erin Marquez practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Riverway Medical Group a Medical Corporation | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Erin Irene Marquez is one of 13,532 family nurse practitioners in California
Family is Erin Marquez's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Erin Marquez is licensed in California.
Specialties and state licenses
- Family nurse practitioner, CaliforniaPrimary
Clinical focus
Dmand AI lists anxiety, broken or dislocated ankle/ or foot, chronic diabetes, chronic kidney disease, conjunctivitis, fluid and electrolyte imbalances, fluid in a joint and lower back pain among the conditions Erin Marquez treats.
Family nurse practitioners near Erin Marquez
Counts of family nurse practitioners with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Erin Irene Marquez billed Medicare for 707 services in 2024
CMS data shows 707 Medicare services from Erin Marquez across 10 procedure codes in 2024, for 220 Medicare patients. Medicare paid $31,519 for them. Every service was in an office.
Erin Marquez's Medicare services by type, 2024
- Office and hospital visits537
- Tests and treatments98
- Lab and pathology40
- Surgery19
- Other services13
Erin Marquez compared with the California median for family nurse practitioners, 2024
- Erin Marquez
- California median
- Medicare services
- 707vs 2343.0 times
- Medicare patients
- 220vs 902.4 times
- Part D claims
- 237vs 36034% below
Medians across 6,382 family nurse practitioners in California with Dmand AI profiles that report each measure.
Erin Marquez's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Erin Irene Marquez treated 220 Medicare patients in 2024, average age 73
CMS counts 220 Medicare patients who saw Erin Marquez in 2024. The largest group is 65 to 74, with 117 patients. 75% of them have high cholesterol, and 69% have high blood pressure. 8% are also on Medicaid. Their average risk score is 0.87, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Erin Marquez's median patient age at 46, with 83% women.
Erin Marquez's Medicare patients by age, 2024
Erin Marquez's Medicare patients by sex, 2024
- Women15872%
- Men6228%
Chronic conditions among Erin Marquez's Medicare patients, 2024
- High cholesterol75%
- High blood pressure69%
- Arthritis40%
- Anxiety31%
- Ischemic heart disease27%
- Diabetes26%
- Mood disorders24%
- Chronic kidney disease22%
Share of Medicare patients with each condition. A patient can have several.
Erin Marquez's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 46
Patient panel by sex, all payers
- Women83%
- Men17%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Erin Irene Marquez wrote 576 Medicare Part D claims in 2024
In 2024, Erin Marquez wrote 576 Medicare Part D claims for 156 patients. 90% of them were for generic drugs. CMS names the drug for 237 of them, across 12 drugs with 11 or more claims each, at $2,048 in total drug cost.
Erin Marquez's Part D claims by kind of drug, 2024
- Generic517 claims90%
- Brand-name and other59 claims10%
Erin Marquez's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Erin Marquez's Part D claims, 2024
- Antibiotics18%104 of 576 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Erin Irene Marquez offers telehealth to Medicare patients
Erin Marquez accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Erin Marquez as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Erin Irene Marquez received $3,274 in industry payments from 2024 to 2025
CMS Open Payments shows 157 general payments to Erin Marquez from 38 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $511.
General payments to Erin Marquez by program year, 2024 to 2025
Companies that paid Erin Marquez the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Erin Irene Marquez's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Erin Irene Marquez
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Erin Irene Marquez's NPI number?
Erin Irene Marquez's NPI number is 1992412290. It was assigned on November 4, 2022, and it is active in the NPI Registry.
What does Erin Irene Marquez specialize in?
Erin Irene Marquez is a family nurse practitioner in Visalia, California. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Erin Irene Marquez practice?
Erin Marquez practices at 1827 S Court St, Visalia, CA 93277. Erin Marquez's primary practice is Riverway Medical Group a Medical Corporation in Visalia, California. Dmand AI also links Erin Marquez to 1 hospital, 1 group practice or clinic, 1 home health agency and 1 medical group.
What is Erin Irene Marquez's office phone number?
The practice phone on file for Erin Marquez is (559) 260-6509.
What is Erin Irene Marquez's medical license number?
Erin Marquez holds California license 95022577.
Which hospitals is Erin Irene Marquez affiliated with?
Erin Marquez is affiliated with Kaweah Health Medical Center. Dmand AI links Erin Marquez to 1 more hospital.
What medical group is Erin Irene Marquez part of?
Erin Marquez is linked to Riverway Medical Care. Dmand AI links Erin Marquez to 1 more medical group.
Does Erin Irene Marquez accept Medicare?
Yes. CMS data shows Erin Marquez billed Medicare for 707 services in 2024, and Erin Marquez accepts Medicare assignment.
Does Erin Irene Marquez offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Erin Marquez as offering telehealth services.
How many Medicare patients does Erin Irene Marquez see?
CMS counts 220 Medicare patients who saw Erin Marquez in 2024, with an average age of 73.
Show 4 more questionsShow fewer questions
What services does Erin Irene Marquez bill to Medicare?
In 2024, Erin Marquez's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and care management and other visits (99439).
What drugs does Erin Irene Marquez prescribe most?
In 2024 Medicare Part D data, Erin Marquez's most prescribed drugs by claims were Amoxicillin-Clavulanate Potass, Prednisone and Ciprofloxacin HCl.
Has Erin Irene Marquez received payments from drug or device companies?
CMS Open Payments shows $3,274 in general payments to Erin Marquez from 38 companies from 2024 to 2025. The largest total came from Abbvie Inc.
How long has Erin Irene Marquez been practicing?
Erin Marquez graduated from medical school in 2022, 4 years ago.
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