HEIDI CHANG MD
NPI 1649681982
Obstetrics & Gynecology in Walnut Creek, CA

Q: What is Heidi Chang's NPI number?

The NPI number for Heidi Chang is 1649681982. It was assigned to this individual provider in the NPPES registry on May 8, 2014.

Q: What is Heidi Chang's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Q: When was this NPI record last updated?

The NPPES record for Heidi Chang was last updated on November 13, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since May 08, 2014PECOS EnrolledAccepts Medicare Assignment

91.04/100

CMS Quality Rating

2637 SHADELANDS DR, WALNUT CREEK, CA 94598(925) 393-0033(925) 301-8956 Get Directions Write a Review

NPPES record last updated: November 13, 2024. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Nov 13, 2024, Feb 6, 2020 (2 updates tracked since 2020).

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About Heidi Chang Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

HEIDI CHANG MD (NPI 1649681982) is an individual obstetrics & gynecology provider in Walnut Creek, California, licensed in California (A128445) and active in the NPI registry since May 2014. She is enrolled in Medicare PECOS and is a graduate of University Of Virginia School Of Medicine (2012).

NPPES Registry Identity

NPI1649681982

Entity TypeIndividualFemale

Primary Taxonomy207V00000X

Provider Legal NameHEIDI CHANGCredential: MD

Location Address2637 SHADELANDS DRWalnut Creek, CA 94598-2512

Mailing Address2637 Shadelands DrWalnut Creek, CA 94598-2512 · (925) 393-0033 · Fax (925) 301-8956

Phone(925) 393-0033

Fax(925) 301-8956

Sole ProprietorYes

Medical School CMSUniversity Of Virginia School Of MedicineGraduated 2012

Enumeration DateMay 8, 2014

Last NPPES UpdateNovember 13, 20242 updates tracked since enumeration

NPPES CertifiedNovember 13, 2024

✔ NPI 1649681982 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

License✔ Licensed in CA · A128445

Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

2637 SHADELANDS DR, Walnut Creek, CA 94598

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Heidi Chang Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6901195262

PECOS Enrollment IDI20160510002097

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

102 services61 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

28 services28 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

27 services25 patients

Removal of uterus, tubes, and/or ovaries through abdomen using an endoscope, 250.0 g or less 58571

This procedure involves the removal of certain internal structures through small incisions in the abdomen, using a special tool called an endoscope. It's performed when these structures are causing health issues. The weight reference (250.0 g or less) relates to the size of the structures being removed.

18 services18 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94598 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$153.83 typical visit price

range $69.00 – $202.35

Typical copayment $38.45 (range $17.25 – $50.58)

Most-billed visit code 99204

Established Patient

$84.91 typical visit price

range $23.44 – $166.46

Typical copayment $21.22 (range $5.86 – $41.61)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

91.04/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

82.13

Promoting Interoperability

100

Improvement Activities

Cost

64.1

Reported Quality Measures

Appropriate Use of DXA Scans in Women Under 65 Years Who Do Not Meet the Risk Factor Profile for Osteoporotic Fracture

Lower rates are better for this measure.

0%59 patients

Breast Cancer Screening

70%191 patients4/55-star benchmark: 93%

Cervical Cancer Screening

40%181 patients2/55-star benchmark: 98%

Colorectal Cancer Screening

42%233 patients2/55-star benchmark: 88%

Controlling High Blood Pressure

60%98 patients3/55-star benchmark: 91%

Diabetes: Eye Exam

2%41 patients1/55-star benchmark: 100%

Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)

Lower rates are better for this measure.

54%41 patients3/55-star benchmark: 91%

Documentation of Current Medications in the Medical Record

29%614 patients1/55-star benchmark: 100%

e-Prescribing

100%28 patients5/55-star benchmark: 100%

Falls: Screening for Future Fall Risk

28%163 patients2/55-star benchmark: 100%

HIV Screening

17%234 patients2/55-star benchmark: 60%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

35%368 patients2/55-star benchmark: 98%

Preventive Care and Screening: Screening for Depression and Follow-Up Plan

25%292 patients2/55-star benchmark: 97%

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

Patients screened: 69% · 156 patients

67%156 patients

Provide Patients Electronic Access to Their Health Information

100%157 patients5/55-star benchmark: 100%

Statin Therapy for the Prevention and Treatment of Cardiovascular Disease

80%103 patients4/55-star benchmark: 91%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MICHAELA STRAZNICKA M.D.

Thoracic Surgery (Cardiothoracic Vascular Surgery)