34 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Brennan, Obstetrician / Gynecologist (OBGYN) in Brooklyn, NY?
Dr. John Brennan, MD is an Obstetrician / Gynecologist (OBGYN), who primarily practices in Brooklyn, NY. He has been practicing for over 34 years and is board certified by the American Board of Obstetrics and Gynecology. Dr. Brennan graduated from Columbia Univ College of Physicians And Surgeons and completed his residency at Bronx Municipal Hosp Ctr, Obstetrics And Gynecology. Dr. Brennan is fluent in English and Spanish, and is currently seeing new patients. Dr. Brennan’s practice accepts UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Brennan’s office.
What are Areas of Expertise for Dr. Brennan?
Dr. John Brennan, MD is a highly-rated, board-certified Obstetrician / Gynecologist (OBGYN) known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Brennan empowers patients to confidently navigate their health journey, specializing in Hysteroscopic Surgery, Menopausal Management, Uterine Fibroids, or comprehensive wellness support. Serving the Brooklyn/NY community, Dr. Brennan is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Brennan go to medical school and complete their residency?
Residency: Bronx Municipal Hosp Ctr, Obstetrics And Gynecology | Bronx-Lebanon Hospital Center Program
Medical School: Columbia Univ Coll of Physicians And Surgeons, New York Ny | Columbia Univ College of Physicians And Surgeons
Is Dr. Brennan board certified in Obstetrician / Gynecologist (OBGYN)?
Yes, Dr. John Brennan, MD is board certified by the American Board of Obstetrics and Gynecology
What languages does Dr. Brennan speak?
Dr. Brennan and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Brennan treat?
As a Obstetrician / Gynecologist (OBGYN), Dr. Brennan diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Brennan. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Threatened Miscarriage
- Miscarriage
- Threatened Spontaneous Abortion
- Signs of Miscarriage
- Early Pregnancy Bleeding with Risk of Loss
ICD-10 Codes:
- O200: Threatened abortion
Also known as:
- Routine Gynecological Exam (Normal Findings)
- Women's Health Checkup
- Women's checkup, all clear
- Pelvic exam, normal results
- OB/GYN visit, no issues
ICD-10 Codes:
- Z01419: Encounter for gynecological examination (general) (routine) without abnormal findings
Also known as:
- Short Cervix During Pregnancy
- Cervix Disorder
- Health Problems in Pregnancy
- Cervical Insufficiency
- Incompetent Cervix
- Shortened Cervix in Pregnancy
ICD-10 Codes:
- O26879: Cervical shortening, unspecified trimester
Also known as:
- Uterine Fibroids
- Leiomyoma
- Fibromyoma
- Myoma
- Uterine growth
ICD-10 Codes:
- D250: Submucous leiomyoma of uterus
Also known as:
- Prenatal Care for Normal Pregnancy
- Third Trimester Prenatal Care
- Prenatal Care
- Routine pregnancy check-ups
- Standard antenatal care
- Normal pregnancy supervision
- Late pregnancy care
- Third trimester check-ups
- Antenatal care in late pregnancy
ICD-10 Codes:
- Z3480: Encounter for supervision of other normal pregnancy, unspecified trimester
- Z3493: Encounter for supervision of normal pregnancy, unspecified, third trimester
Also known as:
- Low Amniotic Fluid During Pregnancy
- Low Amniotic Fluid
- Health Problems in Pregnancy
- Oligohydramnios
- Too Little Amniotic Fluid
- Amniotic Fluid Deficiency
- Reduced Amniotic Fluid Volume
ICD-10 Codes:
- O4103X0: Oligohydramnios, third trimester, not applicable or unspecified
- O4102X0: Oligohydramnios, second trimester, not applicable or unspecified
Also known as:
- Reduced Fetal Movement
- Baby Moving Less
- Fetal Hypoactivity
- Decreased Baby Kicks
ICD-10 Codes:
- O368130: Decreased fetal movements, third trimester, not applicable or unspecified
Also known as:
- Decreased Fetal Movement
- Reduced baby movements
- Fetal movement changes
- Baby not moving much
ICD-10 Codes:
- O368120: Decreased fetal movements, second trimester, not applicable or unspecified
Which procedures does Dr. Brennan perform as a Obstetrician / Gynecologist (OBGYN)?
As a Obstetrician / Gynecologist (OBGYN), procedures performed by an Dr. John Brennan may include:
- Abortion Consultation
- Abortion Follow Up
- Abortion (Medical)
- Abortion (Surgical)
- Annual Pap Smear / GYN Exam
- Antepartum Care
- Anterior Repair
- Artificial Insemination / Intra-Uterine
For detailed information, please contact Dr. Brennan's office.
Does Dr. Brennan accept my insurance?
Dr. Brennan accepts most major insurance plans. Important: Please call our office at before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Brennan accept in Brooklyn, NY?
Dr. Brennan in Brooklyn, NY accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
EmblemHealth
UnitedHealthcare
View All Insurances
Where is Dr. Brennan's office located?
What is Dr. Brennan's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Brennan's National Provider Identifier (NPI) number is 1689799447.
What common questions do patients ask about Dr. Brennan?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Brennan
What is Dr. John Brennan's specialty?
Dr. Brennan is a Obstetrician / Gynecologist (OBGYN) near Brooklyn, NY. An obstetrician/gynecologist has specialized knowledge, skills, and expertise in the medical and surgical management of the female reproductive system and related disorders. This physician acts as a consultant to other healthcare providers while also serving as a primary care physician for women, addressing their unique health needs throughout various stages of life. Contact Dr. Brennan to book an appointment today.
Is this Dr. John Brennan affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Brennan is affiliated with Lenox Hill Hospital which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
Where can I learn more about Obstetrician / Gynecologist (OBGYN)?
Explore Obstetrician / Gynecologist (OBGYN) with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is John Brennan accepting new patients in Brooklyn, NY?
Yes, Dr. John Brennan is accepting new patients at this time.
Does Dr. John Brennan offer online booking?
Please contact Dr. Brennan's office for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with John Brennan?
Please contact Dr. Brennan's office for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. John Brennan have?
Dr. John Brennan is certified by the American Board of Obstetrics and Gynecology.
Other Obstetrician / Gynecologist (OBGYN) Near Brooklyn, NY
RA
Obstetrician / Gynecologist (OBGYN)
Accepting patientsDr. Ramin Ahmadi, MD is an Obstetrician / Gynecologist (OBGYN), who primarily practices in Brooklyn, NY. He has been practicing for over 31 years and is board certified by the American Board of Obstetrics and Gynecology.
Brooklyn, NY
KH
Obstetrician / Gynecologist (OBGYN)
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Brooklyn, NY
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Book OnlineDr. Kirk Young, MD is an Obstetrician / Gynecologist (OBGYN), who primarily practices in Brooklyn, NY. He is board certified by the American Board of Obstetrics and Gynecology.
Weill Cornell Medicine Primary Care - Brooklyn Heights
186 Joralemon Street
Brooklyn, NY 11201
Connect with DR. Brennan
153 Clinton St
Brooklyn, NY 11201