DAVID K. TWITCHELL MD – NPI #1679215719
Internal Medicine
The discipline of Hepatology encompasses the structure, function, and diseases of the liver and biliary tract. The American Board of Internal Medicine considers Hepatology part of the subspecialty of gastroenterology. Physicians who identify themselves as Hepatologists usually, but not always, have been trained in gastrointestinal programs.
DAVID TWITCHELL is a physician located in PHOENIX, AZ. NPPES has assigned the NPI number 1679215719 to DAVID TWITCHELL on April 09, 2022. It is a Type-1 NPI, indicating this NPI number is associated with an individual. The primary taxonomy selected by this provider is 207RI0008X from the Health Care Provider Taxonomy code set, which is classified as Internal Medicine, specializing in Hepatology
The NPI profile was last updated on Sep 03, 2025. 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 DAVID TWITCHELL below.
NPI Profile for
DAVID K. TWITCHELL
(more than 4 years ago)
ADVANCED LIVER DISEASE AND TRANSPLANT CENTER, FLOOR # 2
PHOENIX, AZ 85006 Phone: (602) 521-5800 Fax: (602) 521-5334
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 DAVID TWITCHELL
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.
| Description | Issuer | State | Identifier |
|---|---|---|---|
| other | LICENSE | AZ | 77448 |
| other | TEXAS MEDICAL BOARD | TX | BP10078779 |
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 |
|---|---|---|
| 207RI0008X - Internal Medicine / Hepatology (Primary) |
AZ | 77448 |
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
- Refer to Part B
- Order Durable Medical Equipment
- Refer to Home Health Agency
- Order Power Mobility Devices
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