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Edit this profileAt a glance
- 9186 Bolsa Ave, Westminster, CA 92683
About Dr. Quach
Based in Westminster, CA, Thomas T. Quach, MD is listed in the NPI registry under obstetrics & gynecology. Thomas graduated from Loma Linda University School of Medicine in 1993. According to Medicare claims data, Thomas cared for 196 Medicare patients across 300 services. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, cervical or vaginal cancer screening; pelvic and clinical breast examination, and new patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more. NPI 1033123146 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (714) 799-7522
- Email not available
Practice Locations
9186 BOLSA AVE
Westminster, CA 92683
Conditions Commonly Evaluated or Treated
Within Obstetrics and Gynecology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Contraception
- Birth Control Side Effects
Fertility
- Recurrent Miscarriages
- Infertility
High-risk or subspecialty
- Heart disease complicating pregnancy
- Placenta accreta spectrum
- Suspected fetal anomaly
Infections
Pelvic pain and benign gynecology
- Uterine fibroids
- Chronic pelvic pain
- Ovarian cysts
- Painful intercourse
- Pelvic organ prolapse
- Urinary incontinence in women
Most searched conditions
Infections and vulvovaginal conditions
Menstrual and hormonal
- Absent periods
- Genitourinary syndrome of menopause
- Painful periods
- Perimenopause
- Premenstrual syndrome
Pregnancy
- Ectopic pregnancy
- Gestational diabetes
- Hyperemesis gravidarum
- Miscarriage
- Placenta previa
- Postpartum depression
- Preeclampsia
- Preterm labor
Cancer and precancer
- Abnormal cervical cells and cervical dysplasia
- Cervical cancer
- Endometrial cancer
- Endometrial hyperplasia
- Ovarian cancer
Pregnancy Complications
- High-risk pregnancy
- Twins or triplets
Vaginal & Vulvar Health
Procedures & services
Diagnostic Tests
Hormone & Menopause
- Hormone Replacement Therapy (HRT) Consultation
Laparoscopic and adnexal surgery
- Ovary removal
- Surgical treatment of endometriosis
- Gynecologic laparoscopy
- Ovarian cyst removal
Pelvic floor
- Sling surgery for stress incontinence
- Pelvic organ prolapse surgery
Pregnancy and delivery
- Forceps- or vacuum-assisted delivery
- Vaginal childbirth
- External cephalic version
- Prenatal care
Preventive and diagnostic
- Pelvic examination
- Transvaginal ultrasound
- Well-woman examination
- Colposcopy
- Endometrial biopsy
- Human papillomavirus testing
Subspecialty procedures
- Gynecologic cancer staging surgery
Surgeries
- Labia Reduction
- Tubal Ligation ("Tubes Tied")
- Endometriosis Excision Surgery
Most searched procedures
- C-section
- Hysterectomy
- IUD insertion
- Pap smear
- Ultrasound
Contraception and office treatment
Birth Control
Contraception
Diagnostic Procedures
- Amniocentesis
Fertility
- Egg freezing
- Intrauterine Insemination (IUI)
Postpartum Care
Pregnancy & Prenatal
Preventive Care
Preventive Screening
Routine Exams
Uterine and cervical procedures
- Cervical cone biopsy
- Dilation and curettage
- Endometrial ablation
- Hysteroscopy
- LEEP
- Myomectomy
Procedures Most Often Billed to Medicare
300 services · 196 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
209 | More than most peers in OB-GYN |
| Cervical or vaginal cancer screening; pelvic and clinical breast examination | Billing code | G0101 |
59 | More often than most peers in OB-GYN |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
32 | More often than most peers in OB-GYN |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 2
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other OB-GYNs in Westminster 6
Same specialty, same city.
Trained at Loma Linda University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 1993 at Loma Linda University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What is Dr. Quach's specialty?
Dr. Quach is an OB-GYN in Westminster, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Obstetrics & Gynecology”.
NPI registry
Where can I find Dr. Quach?
Dr. Quach is listed at 9186 Bolsa Ave, Westminster, CA 92683. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Quach?
The number on file is (714) 799-7522. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Quach's NPI number?
Dr. Quach's National Provider Identifier is 1033123146. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Quach's medical education?
Dr. Quach attended Loma Linda University School of Medicine, graduating in 1993. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Quach been practicing?
Dr. Quach has 33 years experience. Calculated from a graduation year of 1993, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Quach known for?
According to Medicare billing data, Dr. Quach the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Quach confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Quach. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.