DR. ELLEN YULIN CHANG MD
NPI 1427450212
Radiology - Diagnostic Radiology in San Francisco, CA

Q: What is Ellen Chang's NPI number?

The NPI number for Ellen Chang is 1427450212. It was assigned to this individual provider in the NPPES registry on September 23, 2014.

Q: What is Ellen Chang's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Q: When was this NPI record last updated?

The NPPES record for Ellen Chang was last updated on August 29, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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 September 23, 2014PECOS EnrolledAccepts Medicare Assignment

1001 POTRERO AVENUE, BUILDING 5, 1ST FLOOR, SAN FRANCISCO, CA 94110(628) 206-8020 Get Directions Write a Review

NPPES record last updated: August 29, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 29, 2022, Aug 26, 2022, Sep 10, 2020 and 2 more (5 updates tracked since 2019).

On this page

About Dr. Ellen Yulin Chang Md NPPES

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

DR. ELLEN YULIN CHANG MD (NPI 1427450212) is an individual diagnostic radiology provider in San Francisco, California, licensed in California (A168940) and active in the NPI registry since September 2014. She is enrolled in Medicare PECOS, maintains a secondary practice location in Los Angeles, and is a graduate of Other (2014).

NPPES Registry Identity

NPI1427450212

Entity TypeIndividualFemale

Primary Taxonomy2085R0202X

Provider Legal NameDR. ELLEN YULIN CHANGCredential: MD

Location Address1001 POTRERO AVENUE, BUILDING 5, 1ST FLOORSan Francisco, CA 94110-3518

Mailing AddressPo Box 743749Los Angeles, CA 90074-3749

Phone(628) 206-8020

Sole ProprietorNo

Medical School CMSOtherGraduated 2014

Enumeration DateSeptember 23, 2014

Last NPPES UpdateAugust 29, 20225 updates tracked since enumeration

NPPES CertifiedAugust 29, 2022

✔ NPI 1427450212 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

Licenses✔ Licensed in CA · A168940✔ Licensed in MO · 2019019873

Definition

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

1001 POTRERO AVENUE, San Francisco, CA 94110

Open in Google Maps ↗

Secondary Practice Location 1

Location 11500 San Pablo St Fl 2Los Angeles, CA 90033-5313 · Phone (323) 442-8541

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Ellen Yulin 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 ID7911205372

PECOS Enrollment IDI20200619001405

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.

Medicare Billing Reassignments

Medicare enrollment records show Ellen Chang reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

City & County Of San Francisco

Same address

General Acute Care Hospital

1001 POTRERO AVE, BUILDING 5, WARD 1B
San Francisco, CA 94110

Reassigned Medicare billing, California enrollment
1,573 clinicians in this Medicare group

NPI 1083648810 (415) 759-4067

University Of California Sfgh Medical Group

Same address

Diagnostic Radiology

1001 POTRERO AVENUE BLDG 5, 1ST FL
San Francisco, CA 94110

Reassigned Medicare billing, California enrollment
336 clinicians in this Medicare group

NPI 1063487122 (628) 206-5871

Usc Care Medical Group, Inc

347 mi

General Practice

1520 SAN PABLO ST
Los Angeles, CA 90033

Reassigned Medicare billing, California enrollment
2,445 clinicians in this Medicare group

NPI 1902846306 (323) 442-5955

Miracl, LLC

1,667 mi

Multi-Specialty

1000 W 10TH ST
Rolla, MO 65401

Reassigned Medicare billing, Missouri enrollment
347 clinicians in this Medicare group

NPI 1205304300 (573) 364-9000

Washington University

1,741 mi

Multi-Specialty

510 S KINGSHIGHWAY BLVD
Saint Louis, MO 63110

Reassigned Medicare billing, Missouri enrollment
373 clinicians in this Medicare group

NPI 1962442475 (314) 273-0770

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 45

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.

X-ray of chest, 1 view 71045

A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.

1,087 services879 patients

X-ray of abdomen, 1 view 74018

An X-ray of the abdomen, 1 view, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the structures in your abdomen, such as the stomach, liver, and intestines. This can help identify issues like blockages, infections, or injuries.

502 services295 patients

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

402 services384 patients

X-ray of foot, minimum of 3 views 73630

An X-ray of the foot, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones and tissues in your foot. This helps to identify fractures, infections, or other abnormalities. Multiple views ensure a comprehensive examination.

323 services264 patients

X-ray of shoulder, minimum of 2 views 73030

An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.

301 services277 patients

X-ray of lower and sacral spine, 2-3 views 72100

An X-ray of the lower and sacral spine involves capturing images of your lower back area, including the tailbone. This procedure helps in identifying problems like fractures, infections, or deformities. 2-3 different angle views provide a comprehensive picture.

213 services211 patients

Dxa bone density measurement of hip, pelvis, spine 77080

A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.

189 services189 patients

X-ray of hip, 2-3 views 73502

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

180 services161 patients

X-ray of hand, minimum of 3 views 73130

An X-ray of the hand, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones in your hand from different angles. This helps in diagnosing fractures, infections, arthritis, or other abnormalities. It's quick and painless.

171 services151 patients

X-ray of knee, 1-2 views 73560

An X-ray of the knee with 1-2 views is a quick, painless test that produces images of the knee bones. It helps identify fractures, infections, or changes in the knee joint. During the procedure, you'll be asked to stay still while the X-ray machine captures the images.

169 services137 patients

X-ray of knee, 4 or more views 73564

An X-ray of the knee, 4 or more views, is a non-invasive imaging test. It involves capturing multiple images of your knee from different angles. This helps in diagnosing conditions such as fractures, arthritis, or infections. The procedure is quick and painless.

165 services164 patients

X-ray of pelvis, 1-2 views 72170

An X-ray of the pelvis, 1-2 views, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the lower part of your torso. These images help to detect any abnormalities or injuries in your hip bones and surrounding structures.

150 services143 patients

X-ray of knee, 3 views 73562

An X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.

129 services122 patients

X-ray of hand, 2 views 73120

An X-ray of the hand, 2 views, is a non-invasive imaging test that uses a small amount of radiation to produce pictures of the bones in your hand. Two different angles are captured to provide a comprehensive view. This helps in diagnosing injuries or conditions affecting your hand.

124 services117 patients

X-ray of ankle, minimum of 3 views 73610

An ankle X-ray is a quick, painless imaging test. It involves capturing at least three different images or 'views' of your ankle using small amounts of radiation. These images help identify any abnormalities or injuries, such as fractures or arthritis.

124 services98 patients

X-ray of wrist, 2 views 73100

An X-ray of the wrist, 2 views, is a diagnostic procedure where two different images of your wrist are taken using a small amount of radiation. This helps identify any abnormalities or injuries such as fractures or arthritis. It's a quick, non-invasive process.

105 services98 patients

X-ray of wrist, minimum of 3 views 73110

An X-ray of the wrist, minimum of 3 views, is a diagnostic procedure that uses radiation to create images of your wrist from different angles. This helps detect fractures, infections, or other abnormalities for accurate diagnosis and treatment planning.

105 services72 patients

X-ray of lower leg, 2 views 73590

An X-ray of the lower leg, 2 views, is a quick, painless test that produces images of the bones in your lower leg. It helps to identify fractures, infections, or diseases. Two different angles are used to provide a comprehensive view of the leg's structure.

93 services75 patients

X-ray of upper spine, 2-3 views 72040

An X-ray of the upper spine, with 2-3 views, is a painless procedure that employs a small amount of radiation to capture images of your neck and upper back. It assists in diagnosing conditions like arthritis, fractures, or spinal deformities.

84 services78 patients

X-ray of thigh bone, minimum 2 views 73552

An X-ray of the thigh bone is a non-invasive imaging test. It involves passing a small amount of radiation through the thigh to produce images of the bone structure. At least two different angles are captured for a comprehensive view. This helps detect fractures, infections, or other abnormalities.

81 services66 patients

X-ray of elbow, minimum of 3 views 73080

An elbow X-ray with a minimum of 3 views is a non-invasive imaging test. It helps visualize the bones of the elbow from different angles. This aids in diagnosing conditions like fractures or arthritis. The procedure is quick, painless, and usually takes around 15 minutes.

76 services73 patients

X-ray of foot, 2 views 73620

An X-ray of the foot, 2 views, is a quick, painless test that produces images of the bones and structures inside your foot. Two different angles are used to provide a comprehensive view. This helps doctors diagnose fractures, infections, or other abnormalities.

69 services68 patients

X-ray of ankle, 2 views 73600

An X-ray of the ankle, 2 views, is a quick, painless test that produces images of the bones and joints in your ankle. Two different angles are used to provide a more complete picture. It helps detect fractures, sprains, arthritis, or other abnormalities. It's safe and typically takes only a few minutes.

63 services61 patients

X-ray of upper arm, minimum of 2 views 73060

An X-ray of the upper arm with a minimum of 2 views involves capturing images of your arm from different angles. This helps in assessing the bones and surrounding tissues for any abnormalities or injuries. It's a quick, painless procedure.

56 services48 patients

X-ray of finger, minimum of 2 views 73140

An X-ray of the finger involves capturing images of your finger from at least two different angles. This non-invasive procedure helps in visualizing the bones and joints, aiding in the diagnosis of fractures, infections, or other abnormalities. Minimal discomfort may be experienced.

56 services48 patients

X-ray of forearm, 2 views 73090

An X-ray of the forearm, 2 views, is a diagnostic procedure where two different pictures of your forearm are taken using a small amount of radiation. These images help doctors assess your bone health and identify any fractures, infections, or other abnormalities.

54 services49 patients

X-ray of middle spine, 2 views 72070

An X-ray of the middle spine, or thoracic spine, involves capturing two different images of the area. This non-invasive procedure uses small amounts of radiation to visualize the bones and tissues in your back, helping to identify any abnormalities or injuries.

50 services49 patients

Single contrast x-ray of upper digestive tract 74240

A single contrast x-ray of the upper digestive tract is a diagnostic procedure that uses a special dye and x-rays to see how your digestive system is functioning. It helps in detecting abnormalities or diseases in your esophagus, stomach, and the first part of your small intestine.

49 services18 patients

X-ray of both knees while standing 73565

An X-ray of both knees while standing is a diagnostic procedure that captures images of your knee joints. You'll stand in front of an X-ray machine, and it will take pictures showing the bones and tissues in your knees. This helps doctors identify any abnormalities or injuries.

41 services41 patients

X-ray of upper spine, 6 or more views 72052

An X-ray of the upper spine with 6 or more views involves capturing multiple images of your neck and upper back. This non-invasive procedure helps doctors visualize the bones and joints, aiding in diagnosing conditions such as arthritis, fractures, or spinal deformities.

40 services40 patients

X-ray of both hips, 3-4 views 73522

An X-ray of both hips with 3-4 views is a safe imaging procedure. It involves capturing multiple pictures of your hip joints from different angles. This helps in diagnosing conditions like arthritis or fractures. You'll need to stay still during the process for clear images.

40 services39 patients

Mri scan of arm joint without contrast 73221

An MRI scan of the arm joint is a non-invasive imaging procedure that uses magnetic fields and radio waves to create detailed images of the structures within your arm joint. No contrast dye is used in this process. It helps to diagnose or monitor conditions like arthritis, injuries, or infections.

35 services30 patients

X-ray of both hips, 2 views 73521

An X-ray of both hips, 2 views, is an imaging test that uses a small amount of radiation to create detailed pictures of your hip joints. This procedure helps to detect fractures, infections, or other abnormalities in the hip area. Two different angles will be captured for a comprehensive assessment.

30 services30 patients

X-ray of elbow, 2 views 73070

An elbow X-ray, 2 views, is a quick, painless imaging test. It uses a small amount of radiation to produce detailed images of your elbow from two different angles. This helps in diagnosing conditions like fractures, infection, or arthritis. It's a safe and effective way to monitor your elbow health.

28 services24 patients

X-ray of collar bone 73000

An X-ray of the collar bone is a quick, painless test that produces images of this bone to help diagnose fractures or other abnormalities. The procedure involves a small amount of radiation to capture these images. During the test, you'll be asked to stay still to ensure clear results.

25 services20 patients

X-ray of pelvis, minimum of 3 views 72190

An X-ray of the pelvis with a minimum of 3 views is a diagnostic procedure that uses radiation to create images of your lower body area. This helps in detecting issues like fractures, arthritis, or other abnormalities. It's quick, non-invasive, and typically painless.

21 services18 patients

X-ray of sacrum and tailbone, minimum of 2 views 72220

An X-ray of the sacrum and tailbone involves capturing images of these lower spine areas from at least two different angles. This non-invasive procedure helps detect abnormalities or injuries, providing valuable information for accurate diagnosis and treatment.

20 services20 patients

Mri scan of leg joint without contrast 73721

An MRI scan of your leg joint is a non-invasive procedure that uses magnetic fields and radio waves to create detailed images of the structures within your leg. This helps doctors diagnose or monitor conditions without using contrast dye.

20 services19 patients

X-ray of ribs on side of body, minimum of 3 views 71101

This is a diagnostic procedure where a machine emits a small amount of radiation to capture images of your ribs from at least three different angles. It helps to identify issues like fractures or infections. It's a quick, painless process.

18 services17 patients

Ct scan of pelvis without contrast 72192

A CT scan of the pelvis without contrast is a non-invasive imaging test. It uses X-rays to create detailed pictures of your lower abdomen area. It helps in detecting issues like injuries, inflammation, or abnormal growths. It doesn't involve any dye injection.

18 services18 patients

Ct scan of leg without contrast 73700

A CT scan of the leg is a non-invasive imaging test that uses X-rays to capture detailed images of your leg's bones, muscles, and blood vessels. It doesn't use contrast dye and doesn't cause any pain. It helps in diagnosing injuries or diseases.

18 services18 patients

Ct scan of leg with contrast material 73701

A CT scan of the leg with contrast material is an imaging procedure. A special dye, the contrast material, is used to highlight certain areas, making them easier to see. This scan helps to detect issues like fractures, infections, or tumors in the leg.

18 services15 patients

X-ray of abdomen, 2 views 74019

An X-ray of the abdomen, 2 views, is a non-invasive imaging test. It uses a small amount of radiation to capture pictures of the structures inside your belly. The two views provide different angles, helping doctors see your organs clearly and detect any issues.

15 services13 patients

X-ray lower and sacral spine, minimum of 6 views 72114

An X-ray of the lower and sacral spine involves capturing images of the bones in your lower back and tailbone area. It helps to identify issues like fractures, infections, or degenerative diseases. A minimum of 6 views ensures a comprehensive examination.

12 services12 patients

X-ray of hip, minimum of 4 views 73503

An X-ray of the hip with a minimum of 4 views is a non-invasive procedure that uses a small amount of radiation to produce images of the hip joint from different angles. This helps to diagnose conditions such as fractures, arthritis, or other abnormalities. It's a quick, painless process.

12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94110 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

$104.51 typical visit price

range $69.00 – $202.35

Typical copayment $26.12 (range $17.25 – $50.58)

Most-billed visit code 99203

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.

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.

PWINT PHYU KHINE D.O.

Radiology (Diagnostic Radiology)

1001 POTRERO AVENUE, BLDG. 5, 1ST FLOOR
SAN FRANCISCO, CA 94110

San Francisco County (628) 206-8020

JOYCE SESE DORADO PH D

Psychologist (Clinical)

1001 POTRERO AVENUE, RM 7M
SAN FRANCISCO, CA 94110

San Francisco County (415) 206-5612

CITY AND COUNY OF SAN FRANCISCO

Nuclear Medicine

1001 POTRERO AVENUE, RM G100
SAN FRANCISCO, CA 94110

San Francisco County (415) 206-8580

URMIMALA SARKAR MD

Internal Medicine

1001 POTRERO AVENUE, RM 5H22
SAN FRANCISCO, CA 94110

San Francisco County (415) 206-8317

RENA MEI MD

Internal Medicine (Gastroenterology)

1001 POTRERO AVENUE, BUILDING 5, 3RD FLOOR, SUITE 3D
SAN FRANCISCO, CA 94110

San Francisco County (628) 206-8823

MICHAEL HARRINGTON HUMPHREYS MD

Internal Medicine

1001 POTRERO AVENUE, BLDG 100 RM 350
SAN FRANCISCO, CA 94110

San Francisco County (415) 476-4617

LLOYD JOSEPH KING MD

Psychiatry & Neurology (Psychiatry)

1001 POTRERO AVENUE, RM 7M
SAN FRANCISCO, CA 94110

San Francisco County (415) 206-5612

DR. HARINI SARATHY MBBS

Internal Medicine (Nephrology)

1001 POTRERO AVENUE, WARD 17 DIALYSIS CLINIC, BLDG. 100, 3RD FL.
SAN FRANCISCO, CA 94110

San Francisco County (628) 206-8242

FEROZ RAHMAN PAPA MD

Internal Medicine

1001 POTRERO AVENUE, BLDG 30 RM 3501K
SAN FRANCISCO, CA 94110

San Francisco County (415) 206-4615

ZAINAB FARZAL M.D.

Otolaryngology

1001 POTRERO AVENUE, BLDG. 5, #4M
SAN FRANCISCO, CA 94110

San Francisco County (628) 206-5476

PAUL RUHR LINDE MD

Psychiatry & Neurology (Psychiatry)

1001 POTRERO AVENUE, RM 7M
SAN FRANCISCO, CA 94110

San Francisco County (415) 206-5612

GLORIA SUE

Plastic Surgery

1001 POTRERO AVENUE, BUILDING 5, #3M
SAN FRANCISCO, CA 94110

San Francisco County (628) 206-8814

KIRA LEVY M.D.

Family Medicine

1001 POTRERO AVENUE, BUILDING 80-83
SAN FRANCISCO, CA 94110

San Francisco County (415) 206-5252

RAYMOND KIBBE MEISTER MD

Preventive Medicine (Occupational Medicine)

1001 POTRERO AVENUE, BLDG 30 5TH FLOOR
SAN FRANCISCO, CA 94110

San Francisco County (415) 206-5200

KAZIM H. NARSINH M.D.

Radiology (Vascular & Interventional Radiology)

1001 POTRERO AVENUE, BLDG. 5, 1ST FL.
SAN FRANCISCO, CA 94110

San Francisco County (628) 206-8020

PATRICK AVILA

Internal Medicine (Gastroenterology)

1001 POTRERO AVENUE, BLDG. 5, 3D
SAN FRANCISCO, CA 94110

San Francisco County (628) 206-8823

CINDY FAYE BELEW CNM NP

Registered Nurse

1001 POTRERO AVENUE, RM 6D14
SAN FRANCISCO, CA 94110

San Francisco County (415) 206-5679

MARY OMALLEY GRAY MD

Internal Medicine (Cardiovascular Disease)

1001 POTRERO AVENUE, RM 5G1
SAN FRANCISCO, CA 94110

San Francisco County (415) 206-3503

AMANDA SUE CARLISLE MD

Anesthesiology

1001 POTRERO AVENUE, RM 2A21
SAN FRANCISCO, CA 94110

San Francisco County (415) 206-8509

DR. MEI ZHU PENG M.D.

Internal Medicine (Nephrology)

1001 POTRERO AVENUE, BLDG. 90, 2ND FL
SAN FRANCISCO, CA 94110

San Francisco County (628) 206-4777

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 Ellen Chang's NPI number?

The NPI number for Ellen Chang is 1427450212. It was assigned to this individual provider in the NPPES registry on September 23, 2014.

Where is Ellen Chang located?

Ellen Chang practices at 1001 Potrero Avenue Building 5, 1st Floor, San Francisco, CA 94110. The listed phone number is (628) 206-8020.

What is Ellen Chang's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Ellen Chang enrolled in Medicare?

Yes. Ellen 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.

Which organizations bill Medicare for Ellen Chang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ellen Chang reassigns Medicare benefits to 5 organizations: City & County Of San Francisco (San Francisco, CA), University Of California Sfgh Medical Group (San Francisco, CA), Usc Care Medical Group, Inc (Los Angeles, CA), Miracl, LLC (Rolla, MO) and Washington University (Saint Louis, MO). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ellen Chang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Ellen Chang was last updated on August 29, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.