Skip to main content
CG
Open to opportunities

Crystal Guillen

@crystalguillen

Experienced Customer Service Representative skilled in healthcare accounts, Medicare support, and admin accuracy.

United States
Message

What I'm looking for

I’m looking for a challenging role where I can resolve customer and patient questions accurately, meet metrics, and contribute reliable admin documentation—preferably with opportunities to work independently while staying compliant and customer-focused.

I’m an experienced associate who brings customer-first communication, problem solving, and strong documentation habits to every role. I’m at my best helping people with complex information while staying organized, punctual, and accountable to company goals.

In healthcare customer service, I review patient account information across multiple systems, resolve inquiries and account balances, update insurance and demographics, and document actions carefully while adhering to HIPPA and company policy. I also support Medicare beneficiaries with plan guidance, enrollment issues, Part D drug assessments, and clear explanations of regulations in a friendly, empathetic way.

I’ve also built a deep administrative foundation through secretarial and multitasking duties—scheduling meetings, preparing memorandums, tracking shipping and receiving, maintaining logs and data sheets, and generating reports. Across my work in customer service, nursing support, and accounting coordination, I consistently maintain compliance, protect confidentiality, and keep accurate records that support smooth operations.

Experience

Work history, roles, and key accomplishments

Ensemble Health Partners logoEP

Customer Service Representative

Mar 2026 - Jun 2026 (3 months)

Resolved patient inquiries and account balance issues by researching patient information across multiple systems and documenting actions taken. Updated insurance and demographics, requested rebills, and coordinated tasks such as cash posting, payment plans, and UB04 statements while maintaining HIPAA compliance.

Maximus Federal logoMF

Medicare Customer Service Rep

Sep 2024 - Aug 2025 (11 months)

Guided Medicare beneficiaries through plan selection and enrollment, providing ongoing support and counseling on Part D drug assessments. Explained complex Medicare information clearly, handled inbound inquiries, and applied Medicare regulations to resolve issues and recommend next steps.

EC

Psychiatric Nurse Assistant

El Paso Psychiatric Center

Jul 2014 - Sep 2015 (1 year 2 months)

Supported a psychiatry team by completing client intake tasks and assisting with discharge plans and unit orientation. Observed and documented changes in patient behavior and vital signs, maintained safety round logs, and adhered to HIPAA, JCAHO, OSHA, and other applicable regulations.

UC

Certified Nurse Assistant

University Medical Center

Aug 2013 - Jul 2014 (11 months)

Provided direct patient care and assistance with activities of daily living while promoting universal precautions to reduce infection spread. Used Cerner for electronic documentation and supported clinical testing and vital sign monitoring while recording and reporting patient condition changes to nursing staff.

CS

Accounting Coordinator

Cleansweep Property Maintenance Services

Jan 2012 - Jul 2014 (2 years 6 months)

Managed accounts receivable and collections, including issuing invoices and statements and sending past-due balance notifications. Handled accounts payable reconciliation, general ledger recordkeeping, scheduling and coordinating work orders, and supported CPA-directed deadlines with timely data entry and reporting.

TR

Donor Processor

Talecris Plasma Resources

Aug 2011 - Feb 2012 (6 months)

Performed front desk administrative duties by greeting donors, answering phones, and accurately updating donor information in DMS logging systems. Scheduled donations and related evaluations, pre-screened donors using standardized eligibility checks, monitored donor vitals during sessions, and maintained HIPAA and regulatory compliance.

Education

Degrees, certifications, and relevant coursework

El Paso Community College logoEC

El Paso Community College

Associate of Arts, General Studies

Earned an Associate of Arts degree in General Studies from El Paso Community College, graduating in January 2009.

ES

Eastwood High School

High School Diploma, High School

Graduated from Eastwood High School with a High School Diploma in May 2005.

Tech stack

Software and tools used professionally

Find your dream job

Sign up now and join over 250,000+ remote workers who receive personalized job alerts, curated job matches, and more for free!

Sign up
Himalayas profile for an example user named Frankie Sullivan