NPPES file of Aug 9, 2026

John Alexander

Case Manager/Care Coordinator · Tustin, CA

John Alexander is a case manager/care coordinator with a practice address in Tustin, California, and NPI 1598977647, issued on May 3, 2007. Check the license (California 74900, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1598977647
Name
John Alexander
Primary taxonomy
Case Manager/Care Coordinator 171M00000X
License number
74900 CA
Self-reported in NPPES; status is on the state search
Practice location
17542 17TH St, Tustin, CA 92780
Phone
(949) 214-9822
Enumerated
May 3, 2007
Record last updated
May 13, 2024
Fax
(949) 214-9822
Medicare enrollment
Enrolled (PECOS I20230221001520); accepts Medicare assignment
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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8 nearest case manager/care coordinator records → All 22,803 in California → Look up another NPI →

Also registered at 17542 17TH St

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

  1. Angelica Bon, LCSWMental Health Counselor1083916860
  2. Quyen Dao, M.D.Obesity Medicine (Internal Medicine) Physician1932305034
  3. Haley LounsburySpeech-Language Pathologist1447626247
  4. Amish Shah, D.O., M.P,H,Geriatric Medicine (Internal Medicine) Physician1851531768

Verify John Alexander in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 74900    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
Find 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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Bills Medicare through one group practice

  1. Sud Specialty Group - CASanta Clara, CA

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

John Alexander among 22,803 case manager/care coordinator records in California

John Alexander is one of 22,803 case manager/care coordinator records with a practice address in California. under 1% 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 1% of them.

  • NPI issued2007 · 1% of these records are older, 87% newer
  • In a Medicare fileYes · under 1% of these records are
  • In the CMS Doctors and Clinicians fileYes · under 1% of these records are
  • Graduated2005 · median 2014 among the 21 with a school on file
  • Record last updated2024 · 67% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 171M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Case Manager/Care Coordinator providers in California

There are 22,803 case manager/care coordinator records in California.

All 22,803 in California → Every provider in Tustin → Case Manager/Care Coordinator nationwide →

The 8 case manager/care coordinator records with the nearest ZIP codes

  1. Daisy AguilarTustin, CA 927801699081836
  2. Daisy HernandezTustin, CA 927801093642969
  3. Ana ResendizTustin, CA 927801619270865
  4. Madelyn ReynoldsTustin, CA 927801811887292
  5. Lisa TriTustin, CA 927801659607505
  6. Arica UriarteTustin, CA 927801780404715
  7. Christopher BetancurTustin, CA 927821629845466
  8. Tyler EdwardsTustin, CA 927821588435978

Common questions

What is John Alexander's NPI number?

John Alexander's National Provider Identifier (NPI) is 1598977647, issued on May 3, 2007. An NPI identifies a provider in billing; it is not a license.

Where is John Alexander located?

The NPPES record lists a practice address at 17542 17TH St, Tustin, CA, 92780. Phone: (949) 214-9822. Providers update this record themselves, so call before visiting.

How can I verify John Alexander's license?

NPPES lists California license number 74900, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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.

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.