NPPES file of Aug 9, 2026

Johanna Chi Chang, M.D.

Pediatric Rheumatology Physician · San Diego, CA

Johanna Chi Chang, M.D. is a pediatric rheumatology physician with a practice address in San Diego, California, and NPI 1821242199, issued on Nov 12, 2008. Check the license (California A98479, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1821242199
Name
Johanna Chi Chang
Credential
M.D.
Primary taxonomy
Pediatric Rheumatology Physician 2080P0216X
License number
A98479 CA
Self-reported in NPPES; status is on the state search
Practice location
8110 Birmingham Way, San Diego, CA 92123
Phone
(858) 966-8082
Enumerated
Nov 12, 2008
Record last updated
Nov 17, 2011 (not updated in 15 years: call before relying on the address or phone)
Fax
(858) 966-6791
Medicare enrollment
Enrolled (PECOS I20110919000267); accepts Medicare assignment
Medical or professional school
Stanford University School Of Medicine, 2005
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 8110 Birmingham Way

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Seema Aceves, M.D., PH.D.Allergy & Immunology Physician1366511628
  2. Kathryn Akong, MD, PHDPediatric Pulmonology Physician1912169061
  3. Mercedes Amado, M.D.Allergy & Immunology Physician1477510287
  4. Angela Barney, MDPediatric Adolescent Medicine Physician1477948115
  5. John Bastian, M.D.Allergy & Immunology Physician1316018179
  6. Rakesh Bhattacharjee, M.D.Pediatric Pulmonology Physician1588781173

Verify Johanna Chi Chang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A98479    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Industry payments in 2024: $225.32

4 payments; by number, the most common kind was food and beverage; the largest payer was Sobi, Inc. The 185 providers of this specialty with any payment received $2,646.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Johanna Chang$225.32
  2. Specialty average$2,646.07

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Rady Children's Hospital San DiegoSan Diego, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Pediatric Rheumatology Physician providers in California

There are 62 pediatric rheumatology physician records in California.

All 62 in California → Every provider in San Diego →

Other pediatric rheumatology physician records in California

  1. Salvatore Albani, M.D.San Diego, CA1962430967
  2. Edsel Arce-Hernandez, MDMadera, CA1861458002
  3. Canagasundra Balakrishnan, MDFontana, CA1902977952
  4. Imelda Balboni, MD, PHDPalo Alto, CA1407903842
  5. William Bernal, M.D.San Francisco, CA1023208261
  6. Bram Bernstein, MDLos Angeles, CA1801988472
  7. James Bistolarides, M.DPalo Alto, CA1215318787
  8. Diane Brown, MDLos Angeles, CA1649298282
  9. Victoria Cartwright, MD, MSSan Diego, CA1174591747
  10. Minakshi Chaudhari, MDFontana, CA1427148519

Common questions

What is Johanna Chi Chang, M.D.'s NPI number?

Johanna Chi Chang, M.D.'s National Provider Identifier (NPI) is 1821242199, issued on Nov 12, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Johanna Chi Chang, M.D. located?

The NPPES record lists a practice address at 8110 Birmingham Way, San Diego, CA, 92123. Phone: (858) 966-8082. Providers update this record themselves, so call before visiting.

How can I verify Johanna Chi Chang, M.D.'s license?

NPPES lists California license number A98479, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.