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MICHAEL WAYNE FLEISCHMAN M.D.
NPI 1801073994
Internal Medicine - Gastroenterology in Los Alamitos, CA

Active since January 30, 2008PECOS EnrolledAccepts Medicare Assignment
3851 KATELLA AVE STE 205, LOS ALAMITOS, CA 90720(562) 430-4449 Get Directions Write a Review

NPPES record last updated: September 8, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Michael Wayne Fleischman M.d. NPPES

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

MICHAEL WAYNE FLEISCHMAN M.D. (NPI 1801073994) is an individual gastroenterology provider in Los Alamitos, California, licensed in California (A129978) and active in the NPI registry since January 2008. He is enrolled in Medicare PECOS and is a graduate of University Of Maryland School Of Medicine (2006).

NPPES Registry Identity

NPI1801073994
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameMICHAEL WAYNE FLEISCHMANCredential: M.D.
Location Address3851 KATELLA AVE STE 205Los Alamitos, CA 90720-3433
Mailing Address3851 Katella Ave Ste 205Los Alamitos, CA 90720-3433 · (562) 430-4449
Phone(562) 430-4449
Sole ProprietorYes
Medical School CMSUniversity Of Maryland School Of MedicineGraduated 2006
Enumeration DateJanuary 30, 2008
Last NPPES UpdateSeptember 8, 2025
NPPES CertifiedSeptember 8, 2025
✔ NPI 1801073994 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in CA · A129978
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Michael Wayne Fleischman M.d. 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 ID9931245958
PECOS Enrollment IDI20150217000535
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.

Medicare Billing Reassignment

Medicare enrollment records show Michael Fleischman reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

County Of Los Angeles
Clinic/Center
7515 VAN NUYS BLVD
Van Nuys, CA 91405
  • Reassigned Medicare billing, California enrollment
  • 1,939 clinicians in this Medicare group
NPI 1003820440 (818) 947-4026

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90720 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.

Other Providers at the Same Location NPPES

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

PROHEALTH PARTNERS A MEDICAL GROUP INC
Internal Medicine
3851 KATELLA AVE STE 205
LOS ALAMITOS, CA 90720
Orange County (562) 794-2776

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Michael Fleischman's NPI number?

The NPI number for Michael Fleischman is 1801073994. It was assigned to this individual provider in the NPPES registry on January 30, 2008.

Where is Michael Fleischman located?

Michael Fleischman practices at 3851 Katella Ave Ste 205, Los Alamitos, CA 90720. The listed phone number is (562) 430-4449.

What is Michael Fleischman's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Michael Fleischman enrolled in Medicare?

Yes. Michael Fleischman is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Michael Fleischman's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Fleischman reassigns Medicare benefits to County Of Los Angeles (Van Nuys, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michael Fleischman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Michael Fleischman was last updated on September 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.