Mark Wylam, M.D.
Mark Wylam, M.D. holds NPI 1003880865, with a primary taxonomy of critical care medicine (internal medicine) physician and a practice location in Orange, CA. The number was issued on February 16, 2006 and the NPPES record was last updated on October 27, 2025. The record lists 6 taxonomy codes. One additional practice location is listed.
Taxonomies and licenses
| Taxonomy | Code | License |
|---|---|---|
| Critical Care Medicine (Internal Medicine) Physician Primary | 207RC0200X | 197177 (CA) |
| Internal Medicine Physician | 207R00000X | 197177 (CA) |
| General Practice Physician | 208D00000X | 40622 (MN) |
| Pulmonary Disease Physician | 207RP1001X | 197177 (CA) |
| Cardiovascular Disease Physician | 207RC0000X | 40622 (MN) |
| Critical Care Medicine (Internal Medicine) Physician | 207RC0200X | 40622 (MN) |
Practice locations
Local context
Active NPPES records list 141 providers with critical care medicine (internal medicine) physician as the primary taxonomy within 25 miles of this practice location's ZIP code, 39 of them within 10 miles.
The same primary taxonomy is listed by 894 in California and 7,319 nationwide.
These are counts from NPPES records, not a ranking or recommendation. Distances are measured between ZIP code centers, not street addresses.
Record history
- Name on record
- Mark E Wylam
- Status
- Active
- NPI issued
- Last updated in NPPES
Is this your record? Updates are made through NPPES, the official National Plan and Provider Enumeration System.
NPPES data as of · Source: CMS NPPES
Building software? Fetch this NPI programmatically with the NPILayer Provider API.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://api.npilayer.com/v1/providers/1003880865"