NPPES file of Aug 9, 2026

Pediatric Gastroenterology Physician in California

264 NPPES records list pediatric gastroenterology physician with a practice address in California, 0.7 per 100,000 residents, the 19th highest rate of 50. Los Angeles and Palo Alto have the most; each record links to the provider's NPI and the California license search. Page 6 of 6.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 2080P0206X · method

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

Los Angeles has the most, 45

  1. Los Angeles45
  2. Palo Alto44
  3. San Diego41
  4. Sacramento19
  5. Madera15

Pediatric Gastroenterology Physician records in California

  1. Anthony Wong, MDSanta Clara, CA 950511982781811
  2. Gregory Wong, M.D.Orange, CA 928681386977288
  3. Jennifer Woo Baidal, MDPalo Alto, CA 943041346570892
  4. Laura Wozniak, M.D.Los Angeles, CA 900481801068747
  5. Ardath Yamaga, MDLos Angeles, CA 900271215024658
  6. Charles Yang, M.D.San Diego, CA 921341962558312
  7. Joanna Yeh, MDOakland, CA 946091720249584
  8. Elizabeth Yen, M.D.San Francisco, CA 941431740258003
  9. Bassam Younes, M.D.Orange, CA 928681467521997
  10. Jocelyn Young, M.D.San Diego, CA 921231306227491
  11. Elizabeth Yu, MDSan Diego, CA 921231538485586
  12. Ke-You Zhang, MDPalo Alto, CA 943041922492388
  13. Yuhua ZhengLos Angeles, CA 900271326479908
  14. David Ziring, M.D.Los Angeles, CA 900951164522033

Source: CMS NPPES, primary taxonomy 2080P0206X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 19 of 50 per resident

  1. Tennessee0.7
  2. Indiana0.7
  3. Iowa0.7
  4. California0.7
  5. Florida0.6
  6. Louisiana0.6
  7. 50 states and D.C.0.7

Source: CMS NPPES, primary taxonomy 2080P0206X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

61.7% of these records appear in a Medicare file, against 64.2% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. California61.7%
  2. United States64.2%

Pediatric Gastroenterology Physician records in California, measured

  • In a Medicare file163 of 264 · 61.7% here, 64.2% nationally
  • In the CMS Doctors and Clinicians file78 · 29.5% here, 31.4% nationally
  • Not updated in five years or more145 · 54.9% here, 51.8% nationally
  • Median graduation year2007 · the 78 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 2080P0206X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

264 NPPES records list pediatric gastroenterology physician (2080P0206X) as their primary taxonomy with a practice address in California: 0.7 per 100,000 residents against 0.7 nationally (50 states and D.C.). Los Angeles has 45 of them (17%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. Texas190
  2. New York182
  3. Pennsylvania163
  4. Florida145

States with a similar rate per 100,000

  1. Iowa0.7
  2. Indiana0.7
  3. Tennessee0.7
  4. Louisiana0.6

The largest states

  1. Texas190
  2. New York182
  3. Pennsylvania163
  4. Florida145
  5. Ohio141

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

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.