NPPES file of Aug 9, 2026

Blake Katherine Rosenthal

Pediatric Gastroenterology Physician · Los Angeles, CA

Blake Katherine Rosenthal is a pediatric gastroenterology physician with a practice address in Los Angeles, California, and NPI 1497384481, issued on Apr 2, 2020. Check the license (California 20A21424, 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
1497384481
Name
Blake Katherine Rosenthal
Primary taxonomy
Pediatric Gastroenterology Physician 2080P0206X
License number
20A21424 CA
Self-reported in NPPES; status is on the state search
Practice location
4650 W Sunset Blvd, Los Angeles, CA 90027
Phone
(323) 361-7798
Enumerated
Apr 2, 2020
Record last updated
Nov 13, 2023
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 4650 W Sunset Blvd

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

  1. Hisham Abdel-Azim, MDPediatric Hematology & Oncology Physician1114018694
  2. Ashraf Abou-Zamzam, MDPediatric Critical Care Medicine Physician1457442931
  3. Karineh Aboulian, MDPediatrics Physician1275774325
  4. Ahmed AbuhamadStudent in an Organized Health Care Education/Training Program1386478915
  5. Joanna Aceto, D.D.S.Pediatric Dentistry1033522578
  6. Etai Adam, M.D.Pediatrics Physician1578811998

Verify Blake Katherine Rosenthal in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A21424
    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: $134.89

1 payment: food and beverage; the largest payer was Regeneron Healthcare Solutions, Inc. The 1,184 providers of this specialty with any payment received $2,585.05 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Blake Rosenthal$134.89
  2. Specialty average$2,585.05

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

Blake Katherine Rosenthal among 264 pediatric gastroenterology physician records in California

Blake Katherine Rosenthal is one of 264 pediatric gastroenterology physician records with a practice address in California. 62% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 98% of them.

  • NPI issued2020 · 98% of these records are older, under 1% newer
  • In a Medicare fileYes · 62% of these records are
  • In the CMS Doctors and Clinicians fileNo · 30% of these records are
  • Record last updated2023 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0206X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pediatric Gastroenterology Physician providers in California

There are 264 pediatric gastroenterology physician records in California.

The 8 pediatric gastroenterology physician records with the nearest ZIP codes

  1. Vrinda Bhardwaj, M.D.Los Angeles, CA 900271972797959
  2. Beth Carter, MDLos Angeles, CA 900271679653000
  3. Martin Gilbert, MDLos Angeles, CA 900271457422354
  4. Rula Harb, MDLos Angeles, CA 900271316045156
  5. Rohit Kohli, MBBS, MSLos Angeles, CA 900271093887333
  6. Kattayoun Kordy, MDLos Angeles, CA 900271396917225
  7. Chuan Hao Lin, MDLos Angeles, CA 900271285734921
  8. Sonia Michail, MDLos Angeles, CA 900271629034665

Common questions

What is Blake Katherine Rosenthal's NPI number?

Blake Katherine Rosenthal's National Provider Identifier (NPI) is 1497384481, issued on Apr 2, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Blake Katherine Rosenthal located?

The NPPES record lists a practice address at 4650 W Sunset Blvd, Los Angeles, CA, 90027. Phone: (323) 361-7798. Providers update this record themselves, so call before visiting.

How can I verify Blake Katherine Rosenthal's license?

NPPES lists California license number 20A21424, 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.