ALTHEA MARIE F. DIAZ MD – NPI #1649838640
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.

ALTHEA MARIE DIAZ is an allergy & immunologist located in BREWSTER, NY. NPPES has assigned the NPI number 1649838640 to ALTHEA MARIE DIAZ on June 04, 2019. It is a Type-1 NPI, indicating this NPI number is associated with an individual. With multiple taxonomy codes selected, the primary taxonomy selected by this provider is 207K00000X from the Health Care Provider Taxonomy code set, which is classified as Allergy & Immunology.

The NPI profile was last updated on Apr 14, 2026. Use the NPI data found here to bill health insurance companies, identify providers enrolled in Medicare and Medicaid services or other HIPAA compliant transactions. See the complete NPI profile for ALTHEA MARIE DIAZ below.

NPI Profile for
ALTHEA MARIE F. DIAZ

NPI Number
1649838640
Enumeration Date

(more than 7 years ago)
Entity Type
Type-1  Individual (Female)
Legal Name
ALTHEA MARIE F. DIAZ
Credentials
MD
Primary location
185 NY 312 SOUTHEAST EXECUTIVE PARK
BREWSTER, NY 10509
Phone: (845) 278-7000 Fax:
Mailing address
185 ROUTE 312
BREWSTER, NY 10509-2337
Phone: (845) 278-7000 Fax:
Sole Proprietor
No
Updated
Certification Date
Apr 14, 2026

Note: NPPES allows providers to attest to the accuracy of their NPI data. When a provider request any change to the NPI record, they will be able to attest to their changed NPI data, resulting in an updated certification date.

Taxonomy Code(s)

A taxonomy code is a code that describes the health care service provider's type, classification, and the area of specialization. The primary specialty for this provider is indicated as (Primary) below.

Taxonomy Classification / Specialization State License
207K00000X
- Allergy & Immunology (Primary)
NY 316128
207R00000X
- Internal Medicine
NY 316128

The taxonomy codes are selected by the provider at the time of NPI registration. Selection of a taxonomy code does not replace any credentialing or validation process that the provider requesting the code should complete.

Additional Information

Education
NEW YORK MEDICAL COLLEGE - Graduated 2019
Accepts Medicare
This provider accepts Medicare-approved amount as payment in full. The Medicare-approved amount is the total the provider can be paid. When a provider accepts the Medicare-approved amount as payment, you won't be billed for more than the Medicare deductible & coinsureance.
Medicare Ordering & Referring
Provider can:
  • Refer to Part B
  • Order Durable Medical Equipment
  • Refer to Home Health Agency
  • Order Power Mobility Devices

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