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Archives: Providers

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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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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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Yajaira Rosa, LCSW

Licensed Clinical Social Worker

Yajaira Rosa, LCSW is a board-certified Behavioral Health Therapist. She treats patients at the South Bronx Health Center in the Bronx.

Yajaira completed her Bachelors of Science in Social Work at Nazareth College and her Masters of Social Work at Fordham University.

Yajaira is bi-lingual, fluent in the Spanish and English language. Yajaira is passionate and committed to helping you enhance personal growth and feel empowered. She uses a collaborative approach and creates a safe space for you to be honest about how you feel in an open and supportive environment. Yajaira specializes in evidence-based interventions for those suffering from depression, anxiety, trauma, interpersonal disputes, low self-esteem, grief, identity confusion, race/cultural stressors, socio-economic stressors, etc., which tailors to your needs. She will help you understand how the connection of your mind and body is essential to your healing. Her goal in session is to help you understand yourself better and provide you with the skills to navigate through stressful situations that led you to seek therapy today.

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

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Yajaira can help you with:

  • Trauma
  • Anxiety (feeling nervous or worried)
  • Family problems
  • Relationship problems
  • LGBTQ advocate

  • 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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Anna Foster, PMHNP-BC

Psychiatric Nurse Practitioner

Anna Foster, PMHNP-BC is a recent graduate of Seattle University’s Psychiatric Nurse Practitioner program. Her nursing experience includes working in an inpatient hospital setting on serious mental illness and chemical dependency floors. Anna feels passionate about serving and treating vulnerable populations, and reducing barriers to accessing quality mental health care. She believes in working in a healthcare team to treat the whole person, and aspires to reduce the stigma around seeking mental health care. In her free time, she enjoys cooking, hiking, and spending time with her family and friends.

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

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Anna 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
  • Traumatic or painful events
  • Domestic abuse (abuse at home)
  • Help with addiction to heroin or pain medications with suboxone along with counseling, primary care and/or behavioral health treatment
  • Drug abuse

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Brianna Bouchez, MSN

Family Nurse Practitioner

Brianna Bouchez, FNP is a graduate of Yale University’s Family Nurse Practitioner program with a concentration in diabetes management. Her work as a registered nurse includes acute care pediatrics, adult intensive care, and adolescent psychiatric care. Brianna holds a faculty position in a vocational nursing program, where she teaches in the classroom and clinical settings. She is an endorsed instructor for the Department of Children and Family Services, where she instructs residential care facilities on the principles of safe medication administration. Volunteering in Haiti was a pivotal experience in shifting her focus to primary care. Brianna is passionate about patient education and a career in the community health setting.

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

Book an Appointment New Patient

Brianna 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 special doctors

Find what you're looking for

Find a provider

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