Mark O'Hollaren, M.D.
NPI 1588723787 belongs to Mark O'Hollaren, M.D., an allergy physician with a practice location in Portland, OR. The NPI was issued on December 6, 2006, and the record was last updated in NPPES on July 8, 2007.
This record hasn't been updated in NPPES since 2007. Details may be out of date.
Taxonomies and licenses
| Taxonomy | Code | License |
|---|---|---|
| Allergy Physician Primary | 207KA0200X | 13450 (OR) |
Practice location
Local context
Active NPPES records list 9 providers with allergy physician as the primary taxonomy within 25 miles of this practice location's ZIP code, 7 of them within 10 miles.
The same primary taxonomy is listed by 20 in Oregon and 1,651 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
- Dr. Mark Thomas O'Hollaren
- 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
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curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://api.npilayer.com/v1/providers/1588723787"