MARK E WYLAM M.D.
NPI 1003880865
Internal Medicine - Critical Care Medicine in Orange, CA
About Mark E Wylam M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK E WYLAM M.D. (NPI 1003880865) is an individual critical care medicine provider in Orange, California, licensed in California (197177) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Rochester, and is a graduate of Georgetown University School Of Medicine (1984).
NPPES Registry Identity
Specialties & Licenses 5
An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Secondary Practice Location 1
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
Mark E Wylam 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.
Areas of Expertise CMS Part B claims 8
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92868 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 11
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
ORANGE, CA 92868
ORANGE, CA 92868
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 Mark Wylam's NPI number?
The NPI number for Mark Wylam is 1003880865. It was assigned to this individual provider in the NPPES registry on February 16, 2006.
Where is Mark Wylam located?
Mark Wylam practices at 101 The City Dr S, Orange, CA 92868. The listed phone number is (714) 456-7890.
What is Mark Wylam's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Mark Wylam enrolled in Medicare?
Yes. Mark Wylam 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.
When was this NPI record last updated?
The NPPES record for Mark Wylam was last updated on October 27, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.
