About Us

Nicole E. Williams, MD, FACOG, FACS | Board Certified Gynecologic Surgeon


Undergraduate: BS Biochemistry & BA English Literature, University of Illinois-Urbana

Medical School: Loyola University of Chicago, Stritch School of Medicine

Internship: Wayne State University, Detroit, Michigan

Residency: St. Joseph Hospital, Chicago

Fellowship: Women’s Health Institute of Illinois, Minimally Invasive Gynecologic Surgery

Faculty Appointments:  Rush University Hospital and Medical Center


Dr. Nicole Williams has an extensive research background . She was a National Institutes of Health research grant recipient in plasmid DNA research during medical school and also presented research on Intravenous Leiomyomatosis at the University of Chicago. During her training, Dr. Williams earned a certificate in Female Sexual Dysfunction from world renowned sexual Psychologist Dr. Domeena Renshaw at Loyola University based on the principles of Masters and Johnson. Dr. Williams also served as a representative at the Accreditation Council for Graduate Medical Education (ACGME) conference where she presented research on patient safety.


Active in the American College of Obstetricians and Gynecologists (ACOG), she has served as the Junior Fellow Illinois Section Chairperson and was appointed to a national position on the International Affairs Committee. Dedicated to the welfare of women, Dr. Williams has traveled to the Dominican Republic, Rwanda, Haiti, Cambodia, The Phillippines, and Ghana to perform necessary gynecologic surgery.

For 3 years, Dr. Williams held a position as teaching faculty and Clinical Instructor with the University of Illinois at Chicago College of Medicine. She served as chairman of the DaVinci Minimally Invasive Surgery Committee at Mercy Hospital, developing their Robotic Gynecologic Surgery Program.  In 2014, she became only the second physician in the state of Illinois to be certified in the Acessa procedure for fibroids.  In addition, she received training under a world reknowned Chicago Urogynecologist and has adopted non-mesh techniques for pelvic organ prolapse.


Her clinical interests include heavy menstrual periods, fibroids, female sexual dysfunction, menopause and Bioidentical hormone therapy, female incontinence, and overactive bladder treatment.  In addition, she is a member of the American Urogynecologic Society (AUGS), American College of Obstetricians and Gynecologists (ACOG), and the American Association of Gynecologic Laparoscopists (AAGL).  Dr. Williams is also a member of Mensa, the international high I.Q. society.


When not actively working in those fields, she enjoys writing short stories and poetry, playing piano, and is dedicated to international mission work.  Dr. Williams has been featured on CBS, WGN, and FOX Chicago as an expert on women's health.

 ​ Sarah Halfmann, CNP | Certified Nurse Practitioner

Undergraduate: University of Michigan at Ann Arbor, BS in Nursing


Graduate Study: Belmont University, Master of Science in Nursing


Board Certified: Certified Nurse Practitioner 


Memberships: American Nurses Association (ANA)


Sarah Halfmann, CNP is passionate about women's health.  She completed her undergraduate study at the University of Michigan where she received a BS in Nursing. She has extensive experience in various outpatient women's health centers and also has a background in Intensive Care.  After training with and passing the Gynecology Institute's rigorous additional curriculum, she has joined the team as an Advanced Certified Nurse Practitioner.  In addition, Sarah is also certified in Advanced Cardiac Life Support (ACLS). Her clinical interests include general women's health, STI's, vaginitis/vaginosis, and public health/community service.


When not at work, Sarah is an avid Vinyasa yoga practitioner, enjoys playing with her dog, and is planning on running her first marathon this year!  She has also authored several BLOG posts on women's health topics.


Cindy Klinger, MS, RDN, LDN | Registered Dietitian and Holistic Nutritionist

Graduate Study: Georgia State University Master of Science in Health Sciences

• Holistic Health Coach through the Institute for Integrative Nutrition

• Master of Science in Health Sciences from Georgia State University

• Registered Dietitian and Nutritionist in the state of Illinois

• FirstLine Therapy Certified with Metagenics

• Currently in the ADAPT Framework through the Kresser Institute for Functional and Evolutionary Medicine

Memberships:  Academy of Nutrition and Dietetics, the Chicago Academy of Nutrition and Dietetics, the Chicago Food and Nutrition Network, and the American Association of Drugless Practitioners.

Cindy Klinger, MS, RDN, LDN is an holistic health coach and functional / integrative dietitian.
Her love of food led her to explore its health benefits, and the more she started to learn, the more interested she became. After becoming certified as a health coach through the Institute for Integrative Nutrition, she decided to pursue a masters in Nutrition and become a registered dietitian to further help others on their journey toward health.

As a former journalist, she enjoy the process of communicating and sharing questions and answers with clients around their health concerns. Her practice is a blend of lessons I’ve learned along my own path, and focuses on functional and integrative nutrition to dive deep into the root cause of illness and symptoms.

Cindy is available for consultations at The Gynecology Institute most Fridays.  She also sees patients at her private practice: www.cindyklinger.com

Danielle Duley, PT, DPT | Pelvic Floor Physical Therapist

Undergraduate:  BS in Psychology, University of Wisconsin

Graduate Study: Doctorate in Physical Therapy, Emory University


​Advanced Training:

  • McKenzie Method of Mechanical Diagnosis and Therapy (MDT)

  • Pelvic PT (CAPP-Pelvic)

  • Pregnancy/Postpartum (CAPP-OB)

Why I practice in women's health PT...

My clinical interest in women’s health began when I was an intern in physical therapy school. I had the opportunity to work with Jennifer and it was her passion for her profession that sparked my interest in women’s health. I was able to help women find the strength and stability to confidently carry their children, witnessed women who did not have to wear pads anymore for incontinence, and worked with women who were able to have intercourse again without pain.

Following graduation, I pursued a position that allowed me to continue working with women. My interest in women’s health has come full circle as I return to work with Jennifer. My hope is that all women across this country will have access to physical therapy focused on women’s health to accomplish their goals and improve their lives.

Danielle works in a private practice associated with the Gynecology Institute.  Learn more at Vitality Women's Physical Therapy and Wellness

Ela Siragusa, L.Ac., LMT | Licensed Acupuncturist and Yogi

Undergraduate: Sports Rehabilitation, Kinesiology, National Sports Institute, Bucharest, Romania


Graduate: Master of Science, Midwest College of Oriental Medicine (MCOM), Chicago, 2000


Board Certified: National Certification Commission Acupuncture & Oriental Medicine (NCCAOM)


Certification:  Suddha Weixler of Chicago Yoga Center

Fellow: American Board of Oriental Reproductive Medicine (FABORM), 2001


Ela was a professional volleyball player in Romania. In 1990 she obtained a certification in kinesiology and sports massage for rehabilitation of sports injuries at the National Sports Institute in Bucharest, Romania. While living in Romania, Ela treated Olympic athletes in volleyball, basketball, swimming and gymnastics.

After moving to the United States, Ela continued her massage career at elite health clubs and spas in Chicago, including The Four Seasons, Ritz-Carlton, and Elizabeth Arden. Ela was promoted to head massage therapist at the Four Seasons in 2000, and continued as the head therapist until 2002. Ela opened her private practice in 1995, and began devoting her time exclusively to her private practice in 2002.

In 2000 Ela graduated from the Ohashiatsu Institute with a degree in Shiatsu. Ela then added acupuncture to her specialties in 2002 by graduating from the Midwest College with a Masters Degree in Oriental Medicine.

After practicing Hatha Yoga, Ela decided to further expand her holistic health practice and became a certified yoga instructor studying under the guidance of the special Suddha Weixler of Chicago Yoga Center. 

Ela is always learning, growing and adding disciplines to better serve her clients' and patients' needs.

"I believe every human being can live a better and more fulfilling life through physically, mentally and spiritually uplifting practices and treatments."

Maria Luz Carballo, LMT | Licensed Massage Therapist

Studies:  Cortiva School of Massage Therapy Program, Chicago, IL


Maria is our holistic massage therapist who provides occasional services the Gynecology Institute.  She received her LMT in 2013, and is well versed in various forms of massage including Shiatsu, chair massage, and hot stones.  She is a native of Argentina.  Maria is also fluent in Spanish and Portugese.


Maria is in a blues band and plays the guitar.  She may be see on her off nights playing in live music venues around Chicago.

Melissa Rosales  | Medical Assistant

Studies:  Illinois School of Health Careers, Medical Assistant Program


Ms. Melissa Rosales is one of our our most valuable Medical Assistants at the Gynecology Institute.  She is a native Chicagoan and has worked at Northwestern Hospital and Allport Medical in both administrative and clinical duties.  Dedicated to service, she is well equipped to perform in office procedures such as Urodynamics and assists Dr. Williams and colleagues as needed for office surgical procedures.  Melissa is also fluent in Spanish.


Melissa has two children and enjoys spending time with her family whenever she can.

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