NPPES file of Aug 9, 2026

Matthew Hebden Porteus, MD

Pediatric Hematology & Oncology Physician · Palo Alto, CA

Matthew Hebden Porteus, MD is a pediatric hematology & oncology physician with a practice address in Palo Alto, California, and NPI 1184684797, issued on Mar 27, 2006. Check the license (California G85749, 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
1184684797
Name
Matthew Hebden Porteus
Credential
MD
Primary taxonomy
Pediatric Hematology & Oncology Physician 2080P0207X
License number
G85749 CA
Self-reported in NPPES; status is on the state search
Practice location
725 Welch RD, Palo Alto, CA 94304
Phone
(650) 497-8000
Enumerated
Mar 27, 2006
Record last updated
Apr 26, 2023
Medicaid ID
158073001 TX
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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Also registered at 725 Welch RD

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

  1. Shayda Abadi, NPNurse Practitioner1316745540
  2. Natasha AbadillaStudent in an Organized Health Care Education/Training Program1194306928
  3. Alexandra Abbott, MDPediatrics Physician1760018675
  4. Steven Abboud, MDAnesthesiology Physician1619364908
  5. Ali Abdelhafiz Abdelsamea, MDPediatrics Physician1699390104
  6. Alireza Abdollah Shamshirsaz, M.D.Obstetrics & Gynecology Physician1881804235

Verify Matthew Hebden Porteus in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G85749
    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: $112.51

1 payment: food and beverage; the largest payer was Biogen, 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. Matthew Porteus$112.51
  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.

Matthew Hebden Porteus among 417 pediatric hematology & oncology physician records in California

Matthew Hebden Porteus, MD 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 2006, is newer than 2% of them.

  • NPI issued2006 · 2% of these records are older, 65% newer
  • In a Medicare fileYes · 53% of these records are
  • In the CMS Doctors and Clinicians fileNo · 29% of these records are
  • Record last updated2023 · 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).

81 pediatric hematology & oncology physician records list a practice address in Palo Alto

They are 81 of the 7,617 NPPES records with a practice address in Palo Alto, and 417 pediatric hematology & oncology physician records in California.

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

  1. Aileen Cohen, MDPalo Alto, CA 943041083788814
  2. Gary Dahl, MDPalo Alto, CA 943041164595856
  3. Joan Fisher, MDPalo Alto, CA 943041316919731
  4. Lisa Goodman, MDPalo Alto, CA 943041619079522
  5. Michael Jeng, MDPalo Alto, CA 943041326104670
  6. Norman Lacayo, MDPalo Alto, CA 943041770648586
  7. Louise Lo, MDPalo Alto, CA 943041033137096
  8. Neyssa Marina, M.D.Palo Alto, CA 943041770648792

Common questions

What is Matthew Hebden Porteus, MD's NPI number?

Matthew Hebden Porteus, MD's National Provider Identifier (NPI) is 1184684797, issued on Mar 27, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Matthew Hebden Porteus, MD located?

The NPPES record lists a practice address at 725 Welch RD, Palo Alto, CA, 94304. Phone: (650) 497-8000. Providers update this record themselves, so call before visiting.

How can I verify Matthew Hebden Porteus, MD's license?

NPPES lists California license number G85749, 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.

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.