MARK W. GRIER MD – NPI #1407862758
Pediatrics
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
MARK GRIER is a physician located in AUSTIN, TX. NPPES has assigned the NPI number 1407862758 to MARK GRIER on July 31, 2006. It is a Type-1 NPI, indicating this NPI number is associated with an individual. The primary taxonomy selected by this provider is 208000000X from the Health Care Provider Taxonomy code set, which is classified as Pediatrics.
The NPI profile was last updated on Mar 24, 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 MARK GRIER below.
NPI Profile for
MARK W. GRIER
(about 20 years ago)
BUILDING A STE.230
AUSTIN, TX 78746 Phone: (512) 328-7666 Fax: (572) 276-2939
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.
Identifiers for MARK GRIER
Identifiers are used to associate other provider identifiers such as Medicaid or other insurers (ie:, Blue Cross, Blue Shield, Aetna, Kaiser-Permanente, etc.), with their NPI number. These identifiers can be used in matching an NPI number to an insurer's records. However, not all providers have such numbers and not all providers choose to include them in their NPI information.
See identifiers
| Description | Issuer | State | Identifier |
|---|---|---|---|
| medicaid | TX | 179323401 | |
| medicaid | TX | 179323402 | |
| medicaid | TX | 179323404 | |
| medicaid | TX | 179323405 | |
| medicaid | TX | 179323403 |
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 |
|---|---|---|
| 208000000X - Pediatrics (Primary) |
TX | M2962 |
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.