MICHAEL A KATZ MD
NPI 1841213899
Internal Medicine in Fullerton, CA

Q: What is Michael Katz's NPI number?

The NPI number for Michael Katz is 1841213899. It was assigned to this individual provider in the NPPES registry on July 25, 2006.

Q: What is Michael Katz's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Michael Katz was last updated on May 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 25, 2006PECOS EnrolledAccepts Medicare Assignment

101 E VALENCIA MESA DR, FULLERTON, CA 92835(714) 992-3969(714) 992-3169 Get Directions Write a Review

NPPES record last updated: May 6, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 6, 2026, Aug 7, 2018 (2 updates tracked since 2018).

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About Michael A Katz Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MICHAEL A KATZ MD (NPI 1841213899) is an individual internal medicine provider in Fullerton, California, licensed in California (A77114) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Orange, and is a graduate of University Of Arizona College Of Medicine (2000).

NPPES Registry Identity

NPI1841213899

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameMICHAEL A KATZCredential: MD

Location Address101 E VALENCIA MESA DRFullerton, CA 92835-3809

Mailing Address101 E Valencia Mesa DrFullerton, CA 92835-3809 · (714) 992-3969 · Fax (714) 992-3169

Phone(714) 992-3969

Fax(714) 992-3169

Sole ProprietorNo

Medical School CMSUniversity Of Arizona College Of MedicineGraduated 2000

Enumeration DateJuly 25, 2006

Last NPPES UpdateMay 6, 20262 updates tracked since enumeration

NPPES CertifiedMay 6, 2026

✔ NPI 1841213899 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 5

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · A77114

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedEmergency MedicineTaxonomy 207P00000X · License A77114 (CA)

Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License A77114 (CA)

Also ListedInternal Medicine · Hospice and Palliative MedicineTaxonomy 207RH0002X · License A77114 (CA)

Also ListedPsychiatry & Neurology · Neurocritical CareTaxonomy 2084A2900X · License A77114 (CA)

101 E VALENCIA MESA DR, Fullerton, CA 92835

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Secondary Practice Location 1

Location 1725 W La Veta Ave Ste 260Orange, CA 92868-4439 · Phone (714) 771-8006 · Fax (714) 744-8630

Other Identifiers 1

Medicaid00A771140CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Michael A Katz Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2961304712

PECOS Enrollment IDI20040122001050

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

387 services144 patients

Critical care, each additional 30 minutes 99292

Critical care refers to special attention given to patients facing life-threatening conditions. Each additional 30 minutes indicates the extension of this specialized care. This might include close monitoring, medication adjustments, and immediate interventions as needed.

91 services58 patients

Insertion of non-tunneled central venous tube for infusion (5 years or older) 36556

This procedure involves placing a thin tube into a large vein, usually in the neck or chest, to administer medication or fluids. It's done under local anesthesia to minimize discomfort. It's a standard, safe procedure for individuals aged 5 and above.

17 services15 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

13 services13 patients

Emergent insertion of breathing tube into windpipe using an endoscope 31500

This is a procedure where a thin tube is inserted into your windpipe to aid in breathing. It's done in emergency situations, using an endoscope, a tool with a light and camera, to ensure correct placement.

12 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92835 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$142.39 typical visit price

range $62.96 – $187.60

Typical copayment $35.59 (range $15.74 – $46.90)

Most-billed visit code 99204

Established Patient

$109.96 typical visit price

range $20.84 – $153.61

Typical copayment $27.49 (range $5.21 – $38.40)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466

DME-Other DME · category DE005N

1 supplier12 claims12 services$771.84 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

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