DR. NATALIE CHANG M.D.
NPI 1548370786
Internal Medicine in Walnut Creek, CA

Q: What is Natalie Chang's NPI number?

The NPI number for Natalie Chang is 1548370786. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Q: What is Natalie Chang's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Natalie Chang was last updated on April 2, 2014. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since August 30, 2006PECOS EnrolledAccepts Medicare Assignment

1450 TREAT BLVD, SUITE 250B, WALNUT CREEK, CA 94597(925) 296-9740(925) 296-9064 Get Directions Write a Review

NPPES record last updated: April 2, 2014. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Dr. Natalie Chang M.d. NPPES

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

DR. NATALIE CHANG M.D. (NPI 1548370786) is an individual internal medicine provider in Walnut Creek, California, licensed in California (A67238) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS and is a graduate of Albert Einstein College Of Medicine Of Yeshiva University (1997).

NPPES Registry Identity

NPI1548370786

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameDR. NATALIE CHANGCredential: M.D.

Location Address1450 TREAT BLVD, SUITE 250BWalnut Creek, CA 94597-2168

Mailing AddressDept 34929, P. O. Box 39000San Francisco, CA 94139-0001 · (925) 952-2828 · Fax (925) 952-2850

Phone(925) 296-9740

Fax(925) 296-9064

Sole ProprietorNo

Medical School CMSAlbert Einstein College Of Medicine Of Yeshiva UniversityGraduated 1997

Enumeration DateAugust 30, 2006

Last NPPES UpdateApril 2, 2014

✔ NPI 1548370786 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · A67238

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

1450 TREAT BLVD, Walnut Creek, CA 94597

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Other Identifiers 5

Medicare UPINH26486CA

OtherP01192503CA · Railroad Medicare

Medicaid00A672380CA

Medicare PINAY512WCA

Medicare ID-Type Unspecified00A672380CA

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

Dr. Natalie Chang M.d. 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 ID5395806566

PECOS Enrollment IDI20081205000489

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 17

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, 30-39 minutes 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.

954 services437 patients

Established patient office or other outpatient visit, 20-29 minutes 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.

407 services309 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

337 services337 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

113 services112 patients

Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage 90694

The quadrivalent inactivated influenza vaccine is a shot given to protect against four strains of the flu virus. This 0.5 ml dosage helps your body develop immunity to the virus. It's an important step in preventing flu-related complications.

111 services110 patients

Established patient office or other outpatient visit, 40-54 minutes 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

57 services47 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

37 services35 patients

Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit G0438

An annual wellness visit is a yearly appointment with your doctor to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's an opportunity to discuss your health status and goals and get a plan tailored for you.

36 services36 patients

Administration of pneumococcal vaccine G0009

The pneumococcal vaccine helps protect against pneumococcal bacteria, which can cause severe infections like pneumonia and meningitis. The vaccine is given as an injection, typically in the arm. It's recommended for infants, older adults, and those with certain health conditions.

32 services32 patients

Telephone medical discussion with physician, 11-20 minutes 99442

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

23 services20 patients

Telephone medical discussion with physician, 21-30 minutes 99443

This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.

22 services21 patients

Urinalysis, manual test 81002

A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.

21 services19 patients

Annual depression screening, 15 minutes G0444

An annual depression screening is a short, routine evaluation to check for signs of depression. It involves answering a series of questions about your feelings, thoughts, and behaviors. The process takes about 15 minutes and helps detect depression early for better management.

21 services21 patients

Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 90677

The Pneumococcal Conjugate Vaccine (PCV20) is a shot given to protect against 20 types of bacteria that can cause serious infections like pneumonia and meningitis. It's administered through a muscle, usually in the arm. It's important for overall health.

16 services16 patients

Established patient office or other outpatient visit, 10-19 minutes 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

15 services15 patients

Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment G0402

An Initial Preventive Physical Examination, also known as a "Welcome to Medicare" visit, is a one-time, face-to-face visit during your first 12 months of Medicare enrollment. It includes a review of your health, as well as education and counseling about preventive services and further screenings.

15 services15 patients

Electrocardiogram, routine ecg with 12 leads; performed as a screening for the initial preventive physical examination with interpretation and report G0403

An Electrocardiogram (ECG) with 12 leads is a non-invasive test that measures the electrical activity of your heart. It's performed during your initial physical examination to screen for heart conditions. The results are interpreted and compiled into a report for further evaluation.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94597 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

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

Most-billed visit code 99214

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

Referred Medical Equipment & Supplies CMS DME claims 7

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

12 suppliers45 claims104 services$5.50 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

8 suppliers16 claims23 services$0.95 avg. paid by Medicare

Enteral feeding supply kit; pump fed, per day, includes but not limited to feeding/flushing syringe, administration set tubing, dressings, tape B4035

Other-Enteral and Parenteral · category OB006N

3 suppliers22 claims650 services$4.51 avg. paid by Medicare

Enteral formula, nutritionally complete, hydrolyzed proteins (amino acids and peptide chain), includes fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4153

Other-Enteral and Parenteral · category OB006N

2 suppliers12 claims5,100 services$0.93 avg. paid by Medicare

Enteral formula, nutritionally incomplete/modular nutrients, includes specific nutrients, carbohydrates (e.g., glucose polymers), proteins/amino acids (e.g., glutamine, arginine), fat (e.g., medium chain triglycerides) or combination, administered through an enteral feeding tube, 100 calories = 1 unit B4155

Other-Enteral and Parenteral · category OB006N

2 suppliers12 claims199 services$0.62 avg. paid by Medicare

Hospital bed, semi-electric (head and foot adjustment), without side rails, without mattress E0295

DME-Hospital Beds · category DB000N

1 supplier11 claims12 services$44.01 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

DR. PURNIMA G KUDLU M.D.

Pediatrics

1450 TREAT BLVD, SUITE 140
WALNUT CREEK, CA 94597

Contra Costa County (925) 296-9784

DR. DEVORAH E BEN-ZEEV M.D.

Internal Medicine

1450 TREAT BLVD, SUITE 120A
WALNUT CREEK, CA 94597

Contra Costa County (925) 296-9720

DR. JOHN T CHO M.D.

Family Medicine

1450 TREAT BLVD, SUITE 120B
WALNUT CREEK, CA 94597

Contra Costa County (925) 296-9720

DR. DEBORAH A GREER M.D.

Family Medicine

1450 TREAT BLVD, SUITE 160
WALNUT CREEK, CA 94597

Contra Costa County (925) 296-9000

DR. ELISE M. HUGHES-WATKINS M.D.

Internal Medicine

1450 TREAT BLVD, SUITE 250B
WALNUT CREEK, CA 94597

Contra Costa County (925) 296-9740

DR. ARTHUR K. LAW M.D.

Pediatrics

1450 TREAT BLVD, SUITE 140
WALNUT CREEK, CA 94597

Contra Costa County (925) 296-9770

DR. TIEN H LAM M.D.

Family Medicine

1450 TREAT BLVD, SUITE 120B
WALNUT CREEK, CA 94597

Contra Costa County (925) 296-9720

DR. TESSIE A OKAMURA M.D.

Pediatrics

1450 TREAT BLVD, SUITE 140
WALNUT CREEK, CA 94597

Contra Costa County (925) 296-9770

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Natalie Chang's NPI number?

The NPI number for Natalie Chang is 1548370786. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Where is Natalie Chang located?

Natalie Chang practices at 1450 Treat Blvd Suite 250B, Walnut Creek, CA 94597. The listed phone number is (925) 296-9740.

What is Natalie Chang's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Natalie Chang enrolled in Medicare?

Yes. Natalie Chang is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Natalie Chang was last updated on April 2, 2014. NPI Profile syncs with the weekly NPPES data releases published by CMS.