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- 2637 Shadelands Dr, Walnut Creek, CA 94598
About Dr. Chang
Based in Walnut Creek, CA, Heidi Chang, MD is listed in the NPI registry under obstetrics & gynecology. Heidi graduated from University of Virginia School of Medicine in 2012. According to Medicare claims data, Heidi cared for 132 Medicare patients across 175 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, new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. NPI 1649681982 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
- (925) 393-0033
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
2637 SHADELANDS DR
Walnut Creek, CA 94598
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
Fertility
High-risk or subspecialty
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
Vaginal & Vulvar Health
Procedures & services
Diagnostic Tests
Hormone & Menopause
Laparoscopic and adnexal surgery
Pelvic floor
Pregnancy and delivery
Preventive and diagnostic
- Pelvic examination
- Transvaginal ultrasound
- Well-woman examination
- Colposcopy
- Endometrial biopsy
- Human papillomavirus testing
Subspecialty procedures
Surgeries
Most searched procedures
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
Procedures Most Often Billed to Medicare
175 services · 132 patients · 4 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of uterus, tubes, and/or ovaries through abdomen using an endoscope, 250.0 g or less | Procedure | 58571 |
18 | More often than most peers in OB-GYN |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
102 | More often than most peers in OB-GYN |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
28 | More often than most peers in OB-GYN |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
27 | As often as other 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.
Other OB-GYNs at this location 3
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 29 related providers in 4 groups
Other OB-GYNs in Walnut Creek 7
Same specialty, same city.
Trained at University of Virginia School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2012 at University of Virginia School of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs Removal of uterus, tubes, and/or ovaries through abdomen using an endoscope, 250.0 g or less 7
Providers in CA who bill this service to Medicare most often.
Common questions
What is Dr. Chang's specialty?
Dr. Chang is an OB-GYN in Walnut Creek, 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. Chang?
Dr. Chang is listed at 2637 Shadelands Dr, Walnut Creek, CA 94598. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Chang?
The number on file is (925) 393-0033. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Chang's NPI number?
Dr. Chang's National Provider Identifier is 1649681982. 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. Chang's medical education?
Dr. Chang attended University of Virginia School of Medicine, graduating in 2012. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Chang been practicing?
Dr. Chang has 14 years experience. Calculated from a graduation year of 2012, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Chang known for?
According to Medicare billing data, Dr. Chang performs procedures including removal of uterus, tubes, and/or ovaries through abdomen using an endoscope, 250.0 g or less, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Chang confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Chang. If this is you, claiming it is free.
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