NPPES file of Aug 9, 2026

Donald Case, M.D.

Pediatrics Physician · Barstow, CA

Donald Case, M.D. is a pediatrics physician with a practice address in Barstow, California, and NPI 1265567903, issued on Feb 22, 2007. Check the license (California G58540, 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
1265567903
Name
Donald Case
Credential
M.D.
Primary taxonomy
Pediatrics Physician 208000000X
License number
G58540 CA
Self-reported in NPPES; status is on the state search
Practice location
412 S 6TH Ave, Barstow, CA 92311
Phone
(760) 256-0213
Enumerated
Feb 22, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(760) 256-4073
Medicaid ID
00G585400 CA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Donald Case in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G58540
    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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91% fewer Medicare Part D claims than the average pediatrics physician in 2024

33 Medicare Part D claims, against an average of 375 among the 5,609 providers of this specialty who prescribed in Part D.

  1. Donald Case33
  2. Specialty average375

Most prescribed

  1. Fluticasone Propionate12 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Donald Case among 9,272 pediatrics physician records in California

Donald Case, M.D. is one of 9,272 pediatrics physician records with a practice address in California. 31% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 44% of them.

  • NPI issued2007 · 44% of these records are older, 43% newer
  • In a Medicare fileYes · 31% of these records are
  • In the CMS Doctors and Clinicians fileNo · 8% of these records are
  • Record last updated2007 · 65% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pediatrics Physician providers in California

There are 9,272 pediatrics physician records in California.

The 8 pediatrics physician records with the nearest ZIP codes

  1. Yung Fang, MDBarstow, CA 923111982665444
  2. Jodiann Ledford, M.D.Barstow, CA 923111881910149
  3. Kevin Choe, DOFort Irwin, CA 923101235759499
  4. Austin Ridgway, MDFort Irwin, CA 923101619608221
  5. Heather Carriedo, M.D.Grand Terrace, CA 923131922028406
  6. Cassandra Mahan-Richards, M.D.Grand Terrace, CA 923131093767782
  7. Chloe Nguyen, DOGrand Terrace, CA 923131750895934
  8. David Ahn, MDApple Valley, CA 923081083761084

Common questions

What is Donald Case, M.D.'s NPI number?

Donald Case, M.D.'s National Provider Identifier (NPI) is 1265567903, issued on Feb 22, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Donald Case, M.D. located?

The NPPES record lists a practice address at 412 S 6TH Ave, Barstow, CA, 92311. Phone: (760) 256-0213. Providers update this record themselves, so call before visiting.

How can I verify Donald Case, M.D.'s license?

NPPES lists California license number G58540, 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.

How much does Donald Case, M.D. prescribe under Medicare Part D?

In 2024, Donald Case, M.D. had 33 Medicare Part D claims; the average among pediatrics physician prescribers was 375. Part D covers Medicare prescriptions only.

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.

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.