MITCHELL HAVEN KATZ (MD) – Pediatric Gastroenterology Physician, NPI 1366530107

MITCHELL HAVEN KATZ (MD) is a healthcare provider. based in Orange, California. specializing in Pediatric Gastroenterology Physician. They hold the professional credentials MD. They hold a License No. G46842 (CA). The NPI Number for MITCHELL HAVEN KATZ (MD) is 1366530107

Main info

Male
49 Years Of Experience
Accepts Medicare Assignment
Name
MITCHELL HAVEN KATZ (MD)
NPI
1366530107
Phone
(714) 289-4099
Address
455 S MAIN ST
Enumeration Date
10 October 2006
Last Update Date
8 July 2007

Doctor Profile

Medical School Name
STATE UNIVERSITY OF NEW YORK DOWNSTATE MEDICAL CENTER
Secondary Phone
8887702462
Graduation Year
1977 (49 years ago)
PAC ID
0749473478
Group Practice PAC ID
6406944883
Professional Enrollment ID
I20101026000471
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience52
Completeness75
Years active:19State licenses:1Digital endpointsOther names

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Provider Addresses for MITCHELL HAVEN KATZ (MD)

  • 455, South Main Street, Vidor, Orange County, Texas, 77662, United States

    ORANGE, CA 928683835

    Phone: (714) 289-4099

    Fax: (714) 516-4299

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 2 Open Payments records for all available years, with a total value of $44.

Total Amount is formed as General ($44) + Research ($0) + Ownership ($0) = $44.

Last reported payment date: 2023-05-25 • Largest payer in this snapshot: Fresenius Kabi USA, LLC ($23).

Total Amount

$44

General + Research + Ownership

Payments

2

Total payment records

General Amount

$44

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2023-05-25

Latest reported date

Top Companies

Largest payers in this snapshot

View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2010-10-26

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20101026000471IPediatric MedicineCATBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 92868)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 6406944883View full group profile
NameSpecialtyState
-CA
Pediatric Medicine, Cardiovascular Disease (Cardiology)CA
Pediatric Medicine, Cardiovascular Disease (Cardiology)CA
G A S T R O E N T E R O L O G YCA
-CA
Pediatric Medicine, Medical Genetics And GenomicsCA
Pediatric Medicine, Allergy/ImmunologyCA
Pediatric MedicineCA
Diagnostic RadiologyNJ
Pediatric Medicine, Cardiovascular Disease (Cardiology)CA

Reviews

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Frequently asked questions

Can I use this page to confirm MITCHELL HAVEN KATZ (MD)'s NPI?
Yes. MITCHELL HAVEN KATZ (MD) is listed with NPI 1366530107 in the public NPI dataset.
Does the file indicate MITCHELL HAVEN KATZ (MD) is practicing under active NPI?
Directory data currently reports MITCHELL HAVEN KATZ (MD) as active.
What is MITCHELL HAVEN KATZ (MD) best known for clinically?
Directory data describes MITCHELL HAVEN KATZ (MD) with Pediatric Gastroenterology Physician. Clinical services aligned with this taxonomy classification.
Does MITCHELL HAVEN KATZ (MD) list a practice location?
Patients near Orange, California may find MITCHELL HAVEN KATZ (MD) in results; validate coverage separately.
Is the information about MITCHELL HAVEN KATZ (MD) up to date?
Data updates when providers file changes in NPPES — treat critical facts as "verify if unsure."

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