NPI Details
DR. Justin Welsh, DO is an internal medicine in Mesa, AZ with 9 years of experience. The provider is a physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs. DR. Justin Welsh, DO NPI is 1861933871. The provider is registered as an individual entity type.
The NPPES NPI record indicates the provider is a male.
The provider's business location address is:
5110 E SOUTHERN AVE
MESA, AZ
ZIP 85206-791
Phone: (607) 737-4499
Fax: (415) 252-7176
The NPI 1861933871 is registered in the Medicare Provider, Enrollment, Chain and Ownership System (PECOS). The provider is legally eligible to order and refer Part B (Clinical Laboratory and Imaging), Durable Medical Equipment, Part A Home Health Agency (HHA), Power Mobility Devices.
The following top HCPCS codes were publicly reported for this provider under the Medicare program for the year 2016. The reported codes are based on the top codes for each available Medicare specialty, excluding evaluation and management codes.
- Established patient office or other outpatient visit, 30-39 minutes (HCPCS:99214)
- Established patient office or other outpatient visit, 20-29 minutes (HCPCS:99213)
- New patient office or other outpatient visit, 45-59 minutes (HCPCS:99204)
- New patient office or other outpatient visit, 30-44 minutes (HCPCS:99203)
- Administration of influenza virus vaccine (HCPCS:G0008)
- Adm sarscov2 50mcg/0.25mlbst (HCPCS:0064A)
- Established patient office or other outpatient visit, 10-19 minutes (HCPCS:99212)
- Brief communication technology-based service, e.g. virtual check-in, by a physician or other qualified health care professional who can report evaluation and management services, provided to an established patient, not originating from a related e/m servic (HCPCS:G2012)
The enumeration date for this NPI number is 3/10/2017 and was last updated on 5/27/2025.
Taxonomy Codes
The NPI record includes the healthcare provider taxonomy classification, state license number and state of licensure. The following information regarding the scope of practice of this provider is available:
| No. |
Taxonomy Code |
Taxonomy Clasification |
Taxonomy Specialization |
License Number |
License State |
Primary |
| 1 | 207R00000X | Internal Medicine | | OP61607809 | WASHINGTON | No |
| 2 | 207R00000X | Internal Medicine | | 1021233 | MASSACHUSETTS | No |
| 3 | 207R00000X | Internal Medicine | | 2024-03131 | NORTH CAROLINA | No |
| 4 | 207R00000X | Internal Medicine | | V4523 | TEXAS | No |
| 5 | 207R00000X | Internal Medicine | | DR.0074143 | COLORADO | No |
| 6 | 207R00000X | Internal Medicine | | 103296 | GEORGIA | No |
| 7 | 390200000X | Student in an Organized Health Care Education/Training Program | | | | No |
| 8 | 207R00000X | Internal Medicine | | 008375 | ARIZONA | Yes |
