NPPES file of Aug 9, 2026

Maritza Elena Ruiz, M.D.

Pediatric Hematology & Oncology Physician · Long Beach, CA

Maritza Elena Ruiz, M.D. is a pediatric hematology & oncology physician with a practice address in Long Beach, California, and NPI 1275725061, issued on Aug 15, 2007. Check the license (California A107484, 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
1275725061
Name
Maritza Elena Ruiz
Credential
M.D.
Primary taxonomy
Pediatric Hematology & Oncology Physician 2080P0207X
License number
A107484 CA
Self-reported in NPPES; status is on the state search
Practice location
2653 Elm Ave Ste 200, Long Beach, CA 90806
Phone
(562) 728-5000
Enumerated
Aug 15, 2007
Record last updated
Jul 21, 2022
Fax
(562) 933-1815
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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8 nearest pediatric hematology & oncology physician records → All 417 in California → Look up another NPI →

Also registered at 2653 Elm Ave Ste 200

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

  1. Leigh Hunter, N.PNurse Practitioner1265503510
  2. Elizabeth Stuart, PHDClinical Psychologist1396385118

Verify Maritza Elena Ruiz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A107484    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: $294.08

5 payments; by number, the most common kind was food and beverage; the largest payer was Alexion Pharmaceuticals, Inc. The 1,215 providers of this specialty with any payment received $7,404.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Maritza Ruiz$294.08
  2. Specialty average$7,404.07

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

Maritza Elena Ruiz among 417 pediatric hematology & oncology physician records in California

Maritza Elena Ruiz, M.D. is one of 417 pediatric hematology & oncology physician records with a practice address in California. 53% 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 35% of them.

  • NPI issued2007 · 35% of these records are older, 47% newer
  • In a Medicare fileYes · 53% of these records are
  • In the CMS Doctors and Clinicians fileNo · 29% of these records are
  • Record last updated2022 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0207X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pediatric Hematology & Oncology Physician providers in California

There are 417 pediatric hematology & oncology physician records in California.

All 417 in California → Every provider in Long Beach → Pediatric Hematology & Oncology Physician nationwide →

The 8 pediatric hematology & oncology physician records with the nearest ZIP codes

  1. Julie Chu, MDLong Beach, CA 908061225008527
  2. Harneet Hara, M.D.Long Beach, CA 908061316208937
  3. Meena Kadapakkam, M.D.Long Beach, CA 908061033475702
  4. Aditi Mehta, D.O.Long Beach, CA 908061508165093
  5. Ramesh Patel, MDLong Beach, CA 908061083727051
  6. David Simon, MDLong Beach, CA 908061780818369
  7. Stephen Smith, DOLong Beach, CA 908061548796790
  8. Eric Kawaoka, MDBellflower, CA 907061902977960

Common questions

What is Maritza Elena Ruiz, M.D.'s NPI number?

Maritza Elena Ruiz, M.D.'s National Provider Identifier (NPI) is 1275725061, issued on Aug 15, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Maritza Elena Ruiz, M.D. located?

The NPPES record lists a practice address at 2653 Elm Ave Ste 200, Long Beach, CA, 90806. Phone: (562) 728-5000. Providers update this record themselves, so call before visiting.

How can I verify Maritza Elena Ruiz, M.D.'s license?

NPPES lists California license number A107484, 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.