MS. MARILYN GEER RIVERA FNP-BC, NP-C
NPI 1275288979
Nurse Practitioner in Lowell, MA

Q: What is Marilyn Geer Rivera's NPI number?

The NPI number for Marilyn Geer Rivera is 1275288979. It was assigned to this individual provider in the NPPES registry on February 21, 2022.

Q: What is Marilyn Geer Rivera's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Active since February 21, 2022PECOS Enrolled

161 JACKSON ST, LOWELL, MA 01852(978) 937-9700 Get Directions Write a Review

NPPES record last updated: March 9, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 9, 2023, Aug 9, 2022, Feb 21, 2022 (3 updates tracked since 2022).

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About Ms. Marilyn Geer Rivera Fnp-bc, Np-c NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MS. MARILYN GEER RIVERA FNP-BC, NP-C (NPI 1275288979) is an individual nurse practitioner in Lowell, Massachusetts, licensed in Massachusetts (RN2369820) and active in the NPI registry since February 2022. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1275288979

Entity TypeIndividualFemale

Primary Taxonomy363L00000X

Provider Legal NameMS. MARILYN GEER RIVERACredential: FNP-BC, NP-C

Location Address161 JACKSON STLowell, MA 01852-2103

Mailing Address161 Jackson StLowell, MA 01852-2103 · (978) 937-9700

Phone(978) 937-9700

Sole ProprietorNo

Enumeration DateFebruary 21, 2022

Last NPPES UpdateMarch 9, 20233 updates tracked since enumeration

NPPES CertifiedMarch 9, 2023

✔ NPI 1275288979 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363L00000X

Licenses✔ Licensed in MA · RN2369820✔ Licensed in VA · 0024183704

Definition

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

161 JACKSON ST, Lowell, MA 01852

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Marilyn Geer Rivera Fnp-bc, Np-c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Marilyn Geer Rivera reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Lowell Community Health Center, Inc.

Same address

Federally Qualified Health Center (FQHC)

161 JACKSON ST
Lowell, MA 01852

Reassigned Medicare billing, Massachusetts enrollment
135 clinicians in this Medicare group

NPI 1952307530 (978) 322-8590

Commonwealth Emergency Physicians PC

406 mi

Emergency Medicine

44045 RIVERSIDE PARKWAY, LOUDOUN HOSPITAL CENTER
Leesburg, VA 20176

Reassigned Medicare billing, District of Columbia enrollment
134 clinicians in this Medicare group

NPI 1598723082 (703) 858-6040

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Hemoglobin a1c level 83036

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

18 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01852 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$97.64 typical visit price

range $63.72 – $189.86

Typical copayment $24.41 (range $15.93 – $47.46)

Most-billed visit code 99203

Established Patient

$111.18 typical visit price

range $21.07 – $155.29

Typical copayment $27.79 (range $5.26 – $38.82)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. BRIAN JOHN PIETRANTONIO O.D.

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