26 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Tan, Obstetrician / Gynecologist (OBGYN) in Palo Alto, CA?
Dr. Winona Tan, MD is an Obstetrician / Gynecologist (OBGYN), who primarily practices in Palo Alto, CA with 2 additional practice locations. She has been practicing for over 26 years and is board certified by the American Board of Obstetrics and Gynecology. Dr. Tan graduated from University of California and completed her residency at Univ Ca Sf Sch Of Med, Obstetrics And Gynecology. She is a member of the American Medical Association, California Medical Association, American College of Obstetricians and. Dr. Tan is fluent in English and Tagalog, and is currently seeing new patients. Dr. Tan’s practice accepts Cigna, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Tan’s office at (650) 853-2917.
Where did Dr. Tan go to medical school and complete their residency?
Residency: Univ Ca Sf Sch Of Med, Obstetrics And Gynecology | University California
Medical School: University of Ca, San Francisco, Sch of Med, San Francisco Ca | University of California
Is Dr. Tan board certified in Obstetrician / Gynecologist (OBGYN)?
Yes, Dr. Winona Tan, MD is board certified by the American Board of Obstetrics and Gynecology , American Board of Obstetrics and Gynecology since 1999
What languages does Dr. Tan speak?
Dr. Tan and their clinical team can communicate with patients in the following languages:
English
Tagalog
What conditions does Dr. Tan treat?
As a Obstetrician / Gynecologist (OBGYN), Dr. Tan 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. Tan. 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:
- 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:
- Other Prenatal Screenings
- Prenatal Care
- Additional pregnancy tests
- Special antenatal screenings
- Specific prenatal checks
ICD-10 Codes:
- Z3689: Encounter for other specified antenatal screening
Also known as:
- Mammogram for Breast Cancer Screening
- Health Screening
- Mammography
- Breast Cancer Screening (PDQ®)
- Mammograms
- Breast X-ray
- Breast Cancer Check
ICD-10 Codes:
- Z1231: Encounter for screening mammogram for malignant neoplasm of breast
Also known as:
- Prenatal Care for Normal Pregnancy
- Prenatal Care
- Routine pregnancy check-ups
- Standard antenatal care
- Normal pregnancy supervision
- Routine Pregnancy Check-ups
- Maternity Care
- Normal Pregnancy Supervision
ICD-10 Codes:
- Z3480: Encounter for supervision of other normal pregnancy, unspecified trimester
- Z3490: Encounter for supervision of normal pregnancy, unspecified, unspecified trimester
Also known as:
- Low Transverse C-section Scar in Pregnancy
- Prenatal Care
- Horizontal C-section Scar (Pregnancy)
- Low-lying C-section Scar
- Prior Cesarean Scar (Low Transverse)
ICD-10 Codes:
- O34211: Maternal care for low transverse scar from previous cesarean delivery
Also known as:
- Pregnancy Care for Older Mothers with Previous Births
- Health Problems in Pregnancy
- Advanced Maternal Age Multiple Pregnancies
- Elderly Multigravida Care
- Older Mother with Prior Births Pregnancy Monitoring
ICD-10 Codes:
- O09529: Supervision of elderly multigravida, unspecified trimester
Also known as:
- Immunization Visit
- Vaccines
- Vaccination appointment
- Shot visit
- Immunization encounter
ICD-10 Codes:
- Z23: Encounter for immunization
Also known as:
- Group B Strep Carrier During Childbirth
- Childbirth Problems
- Infection and Pregnancy
- GBS during labor
- Streptococcus B complicating delivery
- Maternal GBS during birth
ICD-10 Codes:
- O99824: Streptococcus B carrier state complicating childbirth
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:
- Diet-Controlled Gestational Diabetes During Childbirth
- Diabetes and Pregnancy
- Gestational diabetes
- Pregnancy Diabetes Diet Management Labor
- GDM Diet Control Childbirth
- Gestational Diabetes Managed by Diet During Labor
ICD-10 Codes:
- O24420: Gestational diabetes mellitus in childbirth, diet controlled
Also known as:
- Poor Fetal Growth
- Health Problems in Pregnancy
- Fetal Growth Restriction
- Small for Gestational Age
- Intrauterine Growth Restriction (IUGR)
ICD-10 Codes:
- O365930: Maternal care for other known or suspected poor fetal growth, third trimester, not applicable or unspecified
Also known as:
- Abnormal Fetal Heart Rate During Childbirth
- Childbirth Problems
- Fetal heart rate abnormality in labor
- Irregular baby heartbeat during delivery
- Fetal distress due to heart rate
ICD-10 Codes:
- O76: Abnormality in fetal heart rate and rhythm complicating labor and delivery
Also known as:
- Pregnancy-Induced High Blood Pressure During Childbirth
- High Blood Pressure in Pregnancy
- Gestational Hypertension in Labor
- High Blood Pressure from Pregnancy During Delivery
- Hypertension in Childbirth without Proteinuria
ICD-10 Codes:
- O134: Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating childbirth
Also known as:
- Irregular Periods
- Menstruation
- Oligomenorrhea
- Abnormal Menstrual Cycle
ICD-10 Codes:
- N926: Irregular menstruation, unspecified
Also known as:
- Breech Presentation
- Childbirth Problems
- Baby is Breech
- Feet First Birth
- Bottom First Birth
ICD-10 Codes:
- O321XX0: Maternal care for breech presentation, not applicable or unspecified
Also known as:
- Dense Breasts
- Dense breast tissue
- High breast density
- Fibroglandular breasts
ICD-10 Codes:
- R9230: Dense breasts, unspecified
What procedures does Dr. Tan perform?
As a Obstetrician / Gynecologist (OBGYN), Dr. Tan performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Tan. 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:
- Fetal Non-Stress Test
- Nonstress Test
- Nonstress Test (NST)
- Fetal Heart Rate Monitoring
- NST for Pregnancy
- Baby Heartbeat Test
CPT Codes:
- 59025: Fetal non-stress test
Also known as:
- Hysteroscopy with Biopsy or Polyp Removal
- Biopsy
- Hysteroscopy
- Uterine Scope with Biopsy
- Hysteroscopic Polypectomy
- D&C with Hysteroscopy
CPT Codes:
- 58558: Hysteroscopy, surgical; with sampling (biopsy) of endometrium and/or polypectomy, with or without D & C
Does Dr. Tan accept my insurance?
Dr. Tan accepts most major insurance plans. Important: Please call our office at (650) 853-2917 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Tan accept in Palo Alto, CA?
Dr. Tan in Palo Alto, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
BCBS Unspecified
Blue Shield of California
Corporate Services
Crown Cork and Seal Company
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Health Plan of San Mateo
Santa Clara Family Health Plan
UnitedHealthcare
View All Insurances
Where is Dr. Tan's office located?
Recognitions
Memberships & Associations
American Medical Association, California Medical Association, American College of Obstetricians and
Member
What is Dr. Tan's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Tan's National Provider Identifier (NPI) number is 1003904350.
What common questions do patients ask about Dr. Tan?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Tan
What is Dr. Winona Tan's specialty?
Dr. Tan is a Obstetrician / Gynecologist (OBGYN) near Palo Alto, CA. 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. Tan to book an appointment today.
Is this Dr. Winona Tan affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Tan is affiliated with Mills-Peninsula Medical Center, Stanford Health Care - Stanford Hospital, California Pacific Medical Center - Van Ness Campus, Alta Bates Summit Medical Center - Summit Campus which are a Castle Connolly Top Hospitals. 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 Winona Tan accepting new patients in Palo Alto, CA?
Yes, Dr. Winona Tan is accepting new patients at this time.
Does Dr. Winona Tan offer online booking?
Please contact Dr. Tan's office at (650) 853-2917 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Winona Tan?
Please contact Dr. Tan's office at (650) 853-2917 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Winona Tan have?
Dr. Winona Tan is certified by the American Board of Obstetrics and Gynecology.
Other Obstetrician / Gynecologist (OBGYN) Near Palo Alto, CA
Obstetrician / Gynecologist (OBGYN)
Accepting patientsDr. Christie Coleman, MD is an Obstetrician / Gynecologist (OBGYN), who primarily practices in Palo Alto, CA with 2 additional practice locations. She is board certified by the American Board of Obstetrics and Gynecology.
Palo Alto, CA
Reproductive Endocrinologist
Accepting patientsDr. Lillian Swiersz, MD is a Reproductive Endocrinologist, who primarily practices in Palo Alto, CA with 1 additional practice location. She is board certified by the American Board of Obstetrics and Gynecology.
Palo Alto, CA
Obstetrician / Gynecologist (OBGYN)
Accepting patientsDr. Nicole Hong, MD is an Obstetrician / Gynecologist (OBGYN), who primarily practices in Palo Alto, CA with 1 additional practice location. She has been practicing for over 19 years and is board certified by the American Board of Obstetrics and Gynecology.
Palo Alto, CA