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Archives: Providers

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Josie Thiele, RD, CDN, MS

Nutritionist

Josie Thiele, MS, RDN/CDN, CLC is a board-certified Registered Dietitian Nutritionist. She treats patients at multiple CHN sites but is based out of the Williamsburg Clinic. Josie is fluent in English. She completed her undergraduate degree at Colby College and earned a Masters in Nutrition from Boston University.

New patients, please call 866-246-8259 to make an appointment.

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Josie can help you with:

  • Diabetes
  • Losing or gaining weight
  • Getting ready for weight loss surgery
  • Grocery store tours
  • Nutrition help at home

  • High blood pressure
  • Constipation
  • Stomach pain from food
  • Nutrition Management for HIV/AIDS
  • Group classes

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Nazish Pervez, RD, CDN

Nutritionist

Nazish Pervez, RD, CDN is a board-certified Registered Dietitian Nutritionist. She treats patients at our Community Healthcare Network Center at Long Island City Center. She is fluent in English, Urdu, Hindi and Punjabi. She completed her undergraduate degree and Dietetic internship at Queens College.

New patients, please call 866-246-8259 to make an appointment.

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Nazish can help you with:

  • Diabetes
  • High blood pressure
  • Obesity
  • Constipation
  • Losing or gaining weight

  • Prenatal
  • Pediatrics
  • Infant feeding
  • Nutrition care for all ages

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Josephine Ledda, CDN

Nutritionist

Josephine Ledda, RD is a New York State certified Dietitian/Nutritionist. She treats patients at our Crown Heights, Lower East Side, and Jamaica Health Centers. Josephine is fluent in English and speaks some Spanish. She completed her undergraduate degree at New York University. She is currently obtaining her graduate degree at the CUNY School of Public Health. Josephine has been working in community nutrition for 8 years and enjoys sharing science facts with her patients.

New patients, please call 866-246-8259 to make an appointment.

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Josephine can help you with:

  • Breastfeeding
  • Diabetes
  • Losing or gaining weight
  • Grocery store tours

  • Nutrition help at home
  • Stomach pain from food
  • Group classes

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Jessica Marchini, DNP, NP-C

Family Nurse Practitioner

Jessica Marchini is a board-certified Family Nurse Practitioner. She treats patients at our CHN Harlem. Jessica is fluent in English.

Jessica Marchini, DNP, FNP began her nursing career in Washington, D.C. in the emergency department and later moved to North Carolina to become a Family Nurse Practitioner while working as a nurse in pediatric psychiatry. During her graduate education, Jessica collaborated with the North Carolina local health department STD clinics to implement depression screenings to promote the incorporation of mental health into primary care.

She has a special interest in providing holistic quality care to families.

New patients, please call 866-246-8259 to make an appointment.

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Jessica can help you with:

  • Yearly exams
  • Pediatrics (care for babies, children, and teens)
  • Treatment of general health problems
  • Pap smears (test for cervical cancer)
  • STI (infections you can get from sex) testing and treatment

  • Birth control
  • Reproductive health care
  • Health Screenings (tests that look for health problems before you have signs)
  • Care for long term health problems like diabetes, high blood pressure, asthma, and obesity
  • Referrals for other doctors

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Keshia Okorie, RDN, CDN

Keshia Okorie is a board-certified Registered Dietitian Nutritionist. She treats patients at our East New York Health Hub Health Center in Brooklyn, NY. Keshia is fluent in English. She completed her undergraduate degree at the City University of New York, Brooklyn College, and completed her dietetic internship at New York-Presbyterian Hospital. She completed a Fellowship in Outpatient Nutrition at New York-Presbyterian Hospital as well.

New patients, please call 866-246-8259 to make an appointment.

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Keshia can help you with:

  • Breastfeeding
  • Infant feeding
  • Diabetes
  • Losing or gaining weight
  • Getting ready for weight loss surgery
  • Nutrition help at home

  • High blood pressure
  • Constipation
  • Stomach pain from food
  • Picky Eaters
  • Nutrition for kids
  • Group classes

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Michelle Diaz-Gautreau, LCSW

Licensed Clinical Social Worker, Depression Care Program Manager

Michelle Diaz-Gautreau, LCSW is a Licensed Clinical Social Worker who works as a Depression Care Program Manager in the Queens/Brooklyn Region. She treats patients at CHN – Queens Health Center. She speaks English and Spanish.

Michelle obtained an undergraduate degree in psychology at New York University and her masters in social work at Silberman School of Social Work at Hunter College. Michelle has an interest in providing comprehensive and collaborative services to patients in the community and has worked particularly with the Latino community in a variety of settings for over 14 years.

New patients, please call 866-246-8259 to make an appointment.

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Michelle can help you with:

  • General mental health care
  • Depression
  • Anxiety (feeling nervous or worried)
  • Family problems
  • Relationship problems

  • LGBTQ problems
  • Self-esteem (having respect for yourself)
  • Loss of a loved one
  • Social phobia (feeling shy and nervous around others)
  • Taking your medicines the right way

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Peggy BK Leung, MD

Peggy BK Leung is a board certified Internal Medicine practitioner. She treats patients at our Long Island City Health Center in Long Island City, NY. Peggy BK Leung is fluent in English and Cantonese.

Peggy BK Leung completed her undergraduate degree at the University of California, San Diego and her medical degree at David Geffen School of Medicine at the University of California. She completed her residency at New York Presbyterian Hospital – Weill Cornell Medical Center.

New patients, please call 866-246-8259 to make an appointment.

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Dr. Leung can help you with:

  • Yearly exams
  • Treatment of general health problems
  • Pap smears (test for cervical cancer)
  • STI (infections you can get from sex) testing and treatment

  • Birth control
  • Health screenings (tests that look for health problems before you have signs)
  • Care for long term health problems like diabetes, high blood pressure, asthma, and obesity
  • Referrals to other doctors

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Stacey Cacciola, D.O., MHS, FAAP

Director of Pediatrics

Dr. Cacciola is a board-certified pediatrician and is the Director of Pediatrics for Community Healthcare Network, as well as the Medical Director for the Williamsburg Health Center and our two School-Based Health Centers. She sees patients at the Williamsburg Health Center.

Dr. Cacciola completed her medical degree at the New York College of Osteopathic Medicine and completed her pediatrics residency at Maimonides Medical Center in Brooklyn. She also has a Master of Health Sciences degree in Molecular Microbiology and Immunology from the Johns Hopkins University School of Public Health.

New patients, please call 866-246-8259 to make an appointment.

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Dr. Cacciola can help you with:

  • Yearly exams
  • Pediatrics (care for babies, children, and teens)
  • STI (infections you can get from sex) testing and treatment for teens
  • Birth control
  • Reproductive health care

  • Camp check-ups
  • School health forms
  • Vaccines (shots)
  • Help with healthy eating
  • Help dealing with stress
  • Referrals to other doctors

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Bryan Tolentino, MD

Director of Infectious Diseases and LGBTQ+ Health

Bryan Tolentino, MD is a double-board certified physician in Internal Medicine and Infectious Diseases. He treats patients at our Harlem Health Center in Manhattan and Williamsburg Health Center in Brooklyn. He speaks English and Spanish fluently.

Dr. Tolentino earned his medical degree with Summa Cum Laude Honors from Pontificia Universidad Catolica Madre y Maestra. He completed his residency in Internal Medicine at Mount Sinai Medical Center and completed his fellowship in Infectious Diseases at Icahn School of Medicine at Mount Sinai St. Luke’s-Roosevelt Hospital Center.

Dr. Tolentino has a special interest in HIV medicine including PrEP and PEP, treatment of hepatitis B and hepatitis C, and LGBTQ+ care.

New patients, please call 866-246-8259 to make an appointment.

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Dr. Tolentino can help you with:

  • Primary and specialized care for patients with HIV/AIDS
  • HIV prevention (PrEP and PEP)
  • Sexual Health and STI (infections you can get from sex) testing and treatment
  • Transgender care including hormonal therapy
  • Treatment of hepatitis C
  • Consultations for general Infectious Diseases

  • Treatment of general health problems
  • Health screenings (tests that look for health problems before you have signs)
  • Care for long-term health problems like diabetes, high blood pressure, asthma, and obesity
  • Yearly exams
  • Referrals to other doctors

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Colette Russen, FNP-C, AAHIVS

Family Nurse Practitioner

Colette Russen, FNP-C is a board-certified Family Nurse Practitioner. She treats patients at our East New York Hub Health Center in Brooklyn.

Colette completed her advanced practice nursing degree at Pace University, and completed Community Healthcare Network’s Family Nurse Practitioner Fellowship program. She completed her undergraduate nursing education at Phillips School of Nursing at Mount Sinai Beth Israel and Jacksonville University. She is credentialed as a specialist in HIV primary care by the American Academy of HIV Medicine.

New patients, please call 866-246-8259 to make an appointment.

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Colette can help you with:

  • Yearly exams
  • Pediatrics (care for babies, children, and teens)
  • Treatment of general health problems
  • Pap smears (test for cervical cancer)
  • STI (infections you can get from sex) testing and treatment
  • HIV treatment

  • Birth control, including IUDs and Nexplanon (long-term birth control)
  • Reproductive health care
  • Health Screenings (tests that look for health problems before you have signs)
  • Care for long term health problems like diabetes, high blood pressure, asthma, and obesity
  • Referrals for special doctors
  • Gender-affirming treatment

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