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Music Ministry

Our Music Ministry has always held a place of honor and responsibility in the Archdiocese of Los Angeles.  The music of this sacred space reflects our unity as a Universal Church.  It is our mission to give glory and praise to God by leading the assembly in sung prayer.  The Music Ministry is comprised of both volunteers and professional musicians dedicated to this mission.  There are several ensembles which serve the St. Denis Community including Adult, Filipino, Contemporary/Folk, Teen, Handbell and Children's Choir.  Contact the Director of Music, Patrick Zubiate, or 909-861-7106 ext. 438

Altar Care, In-Pew Care and Sacred Linen Service

This volunteer ministry cleans the Sanctuary area, replenishes offering envelopes and distributes missalettes in the pews for Sunday and weekday liturgies.  They come together every Thursday morning after the 8:00AM Mass to fulfill this ministry.  They are also responsible for the preparation and care of the altar linens. This includes the washing and ironing of purificators, corporals, and altar linens.  Contact Donna Baines at (909) 860-5510 or Jennifer Chisholm at (909) 595-1639 for information.

Church Environment

Volunteers appropriately arrange flowers and banners to enhance the Liturgical Seasons.  Contact Donna Baines at (909) 860-5510.

Altar Server

The ministry of Altar Server is to assist the Priest at Mass.  Boys and girls must be at least 10 years old or in fourth grade and received First Communion to be an Altar Server.  Contact Patrick Dempsey at (909) 860-4271 for information.

Eucharistic Ministers

Extraordinary Ministers of Communion who serve the Body and Blood of Christ at Mass and to the sick and homebound.  One must be fully initiated in the Church (have received the Sacraments of Baptism, Eucharist and Confirmation) and be interviewed by the Pastor.  If married, must be married in the Catholic Church.  Training for approved applicants is provided quarterly (February, May, August and November.)  Annual opportunities for updating are provided.  Contact Donna Baines at (909) 860-5510.  Ministers to the sick should contact Jack Ruehlman at (909) 860-1930.


A Lector proclaims the Scriptures at Mass and other services.  To become a Lector, one must be a Confirmed Catholic, in good standing with the Church, be interviewed by the Pastor, trained, commissioned and committed to a schedule.  

Ushers and Greeters

Parish volunteers who warmly welcome parishioners as they enter the Church for Mass, showing them to their seats.  They pay special attention to newcomers and visitors, caring for the offertory gifts, take collections, distribute weekly bulletins and assist the priests as needed.  Contact Juan and Linda Pena at (909) 861-4036.

Respect Life

A committee that prays and informs parishioners of Respect Life concerns for all ages.  They meet to pray the Rosary 2nd Wednesday of every month in the Eucharistic Chapel at 2:15PM Mass except January, May and October.  They meet every Wednesday during those three months.  Contact Elizabeth Fan at

Eucharistic Adoration

Fridays following the 8:00AM Mass concluding with Holy Hour at 9:30PM. The Blessed Sacrament is exposed and adored by volunteers who sign up for one hour or more to pray before the Lord Jesus present in the Monstrance.

Finance Council

Advises the Pastor on financial matters of the parish and school. Responsible for monitoring all income and expenses, and approving the annual budgets.  

Offertory Counters

A group that counts the funds collected at Mass each week. Each group volunteers about once a month. 

Parish Pastoral Council

The PPC is involved in most activities and programs affecting the liturgical and spiritual life of St. Denis Parish. Contact Tony Shatola at (909) 525-8771.

Stations of the Cross

Held Friday evenings at 5:30PM during Lent before the Friday evening Mass followed by soup and sharing in Potthoff Hall.

Young Adult Ministry Coordinator

"As intergenerational young adults, we welcome all those able to share unique gifts, talents, and spirituality and life experiences so that the entire community will benefit."  Young Adults are 18-39, married or single, with or without children, looking to build relationships and friendships, community and belonging, and develop spirituality.  

Italian Catholic Federation

The ICF is a family oriented, non-profit, fraternal organization, promoting activities that build family spirit and bring all ages together.  This Apostolic Program offers the opportunity to promote and perform charitable works in our community.  Scholarships are offered to Catholic high school seniors.  Grants are also offered to the developmentally disabled.  The ICF contributes to the education of young men in formation for the Priesthood.  Activities include St. Joseph Table/Pasta Dinner, Cannoli Sales and Breakfast with Santa.  The group meets the 2nd Friday of the month in Potthoff Hall at 6:30PM.  Dark in July.  

Queen of Peace Rosary Group

This ministry focuses on the propagation and devotion of the Holy Rosary of the Blessed Virgin Mary among families in Diamond Bar and its surrounding communities with faith in the promise the "the family that prays together stays together."  They have six images of the Blessed Virgin visiting homes for a week.  A home visit of the Blessed Mother can be scheduled.  Monthly meetings are held on the 1st Sunday at 2:45PM.  Contact Carol Evangelista at (909) 969-3316. 

Special Needs Ministry

If you have a child with special needs, including: Autism, Down Syndrome, Cerebral Palsy, Mental Retardation or another closely related disorder and you are interested in Sunday School Classes for him/her or a support group for your family.  Please contact the Office of Religious Education at
(909) 861-7106 Ext. 242.


The Cursillo is an encounter with Christ.  Correctly applies and overseen the Cursillo Movement can have very positive results in the spiritual revitalization of the world.  The Christ-likeness in a few people is contagious.  The transference of Christ’s values to others in one’s family, school, place of business, etc. is the Christianizing of environments the Cursillo promotes.  The goal of the movement is that Christ be the prime influence in society.  So it is said the PRIMARY OBJECTIVES of the Cursillo Movement are to develop in adult Christians a consciousness of their ability and mission to become leaders in the work of Christian renewal, and to sustain them as they provide a Christian leaven in civic, social and economic life.  This “Christianizing of environments” is what the Cursillo movement is about. 

Safeguard the Children

To educate parents and children for the prevention of sexual abuse or any other forms of violence that is perpetuated on other segments of the parish.  Contact Patrick Lowe.

Council of Catholic Women

A parish organization, under the auspices of the Los Angeles Archdiocese, under the name of ACCW (Archdiocesan Council of Catholic Women,) through which the women of St. Denis participate in Archdiocesan activities.  This is an apostolic and charitable organization that actively supports the Parish in spiritual and other undertakings.  They are involved in various outreach activities such as Catholic Charities, Get on the Bus Program, Baby Showers for mothers in need and are in partnership with other ministries and the Homeless.  Other activities include Boutiques, Bake Sales and Cinco the Mayo celebrations.  All women are welcome! Meetings are held the 1st Wednesday of every other month in Potthoff Hall from 10:30 am to 12:00 noon.

Catholic Men's Fellowship

The Catholic Men's Fellowship (CMF) is a lay ministry, fully approved by the Church, that reaches out to all Catholic men. We act to encourage one another to strengthen our faith in Christ and to become better sons, brothers husbands, fathers and friends.We meet monthly at St. Denis and also at conferences and at retreats, to support one another, energize our belief and to build Christ-centered friendships. The Catholic faith is at the center of all our activities. We reach out across all denominations, working to build up the Body of Christ. We meet twice a month - 2nd Thursday evening and 4th Saturday morning (monthly breakfast meeting).  Contact Mike Kellogg at (626) 664-4976.

Golf Club

The St. Denis Golf Club is a social group of men and women who enjoy golf.  They organize regular tee times at the local golf courses and organize the Parish Golf Tournaments.  

Youth Ministry

The Youth Ministry program is committed to support, empower, and affirm youth through a positive environment where together with adults the ministry will develop leadership for youth to organize, coordinate, and strive to be an example of discipleship and service to the world community and the Church. Contact Jasmine A. Blackburn at or call 909-861-7106 x243.

Teen Confirmation Program

The Confirmation Faith Formation process prepares high school aged youth to receive the Sacrament within a basic framework of two years.  The goal of the preparation is to gradually awaken in the life of the teen the reality of God and deepen their understanding of their faith.  For more information regarding registration, fees, etc., please go to the Teen Confirmation & Youth Ministry Page. Contact the Director, Jasmine A. Blackburn at or call 909-861-7106 x243.



Rite of Christian Initiation – preparation of adult candidates for Catholic sacraments.  Contact Angie Perez at (909) 861-7106 Ext. 116 or

Scripture Study

Scripture Study centers on the Scripture readings for the upcoming Sunday.  It will deepen your appreciation and understanding of the Living Word and help you apply the Gospel to your everyday life.  Join us every Wednesday evening at 7:45PM in Potthoff Hall.


Duties include preparing the altar for Mass and cleaning the altar following Mass.  For information contact Roxana Polio at (909) 861-7106 (message only).

Engagement Encounter

This is a weekend experience patterned after the Marriage Encounter.  It is highly recommended for all couples planning marriage at St. Denis.  Contact Pastoral Office at (909) 861-7106 for date and time of sessions.

Marriage Encounter

This is a weekend for married couples who desire a richer, fuller life together.  The weekend is not a retreat, marriage clinic, group sensitivity or a substitute for counseling.  It is a unique approach aimed at revitalizing marriages.  Contact for more information and upcoming sessions.

Always Our Children

Support group for parents of lesbians and gays based on the document written by The Bishops' Committee on Marriage and Family.  We come together in a safe and confidential environment to share our experience as parents of lesbians and gay children in a Catholic context.  We meet the last Thursday of every month at 7:30PM.  

Bereavement Ministry

This group provides support and consolation to those mourning the loss of a loved one.  They lessen the burden to the grieving families by assisting in the preparation of funeral liturgies.  Contact Carina Teng at (626) 675-8170.

Christian Service

A group committed to serving individuals and families facing temporary difficulties with emergency assistance in the form of food, clothing, transportation and temporary shelter.  Donations to benefit the various outreach programs of St. Denis Christian Service can be made by using the green envelopes found in the pews.  Volunteers meet the 3rd Friday of the month in Potthoff Hall from 7:15PM to 8:30PM.  Contact Elizabeth Fan at

Hope and Support Ministry

They provide a support network and encouragement for individuals and their families who are challenged by serious injuries or life threatening diseases.  Educational presentations and support are provided by healthcare professionals.  They seek to educate parishioners about issues and agency support for cancer and other life threatening diseases and injuries.  Contact Parish Office at (909) 861-7106 for information.

Knights of Columbus

The Knights of Columbus is a Catholic men's fraternal benefit society that was formed to render financial aid to members and their families.  Membership is open to any practicing Catholic men over the age of 18.  Mutual aid and assistance are offered to sick, disabled and needy members and their families.  Social interaction is promoted among members and their families through education, charitable, religious and social welfare.  Some of the activities of the Knights are the Annual Knights BBQ, Blood Drives, Pancake Breakfast, Intellectual Disabilities Drive and Tamale Sale.  Meetings are held on the 3rd Thursday of the month at 7:00PM via Zoom. For more information please contact our Grand Knight, Angelo Magdelano, at (909) 610-0232.

Legion of Mary

Legion members visit the sick and homebound, organize enthronements, and encourage people of faith to visit Jesus in Eucharistic Adoration, lead rosaries at funeral vigils and evangelize by bringing many to renew their faith.  Meetings are held Mondays, 7:15PM to 9:00Pm in the Cry Room East inside the Church.  Contact Mary Ann Bernsten at (909) 568-5791.

Parish Volunteers

Want to volunteer but not sure what is needed.  Periodically, volunteers are needed to help with specialized tasks.  Please let us know if you have skills in any of these areas; carpentry, administrative tasks, landscape maintenance, plumbing, heating and air-conditioning, electrical, transportation and hospitality events. 


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