National Provider Identifier Database

HAROLD S NELSON, MD – NPI #1104916873
Allergy & Immunology

An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.


Contact Information

HAROLD S NELSON, MD
1400 JACKSON ST
DENVER, CO80206-2761
Phone: 303-388-4461
Fax: 303-270-2174
Website:
Specialty Taxonomy Code
* Allergy & Immunology 207K00000X
Clinical & Laboratory Immunology 207RI0001X

* Indicates primary specialty

NPI Profile & details for HAROLD S NELSON

NPI Number 1104916873
Credentials MD
Entity Individual
Enumeration date 10/13/2006
Last updated 11/12/2020 - About 6 years ago
Sole proprietor1 No
Identifiers
  • CO License #: 18391
  • CO Medicaid: 01183912
Hospital affiliation n/a

1 A sole proprietor/sole proprietorship is an individual, and as such, is eligible for a single NPI number. The sole proprietor must apply for the NPI number using his or her own Social Security Number (SSN), not an Employer Identification Number (EIN) even if he/she has an EIN.

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