DONALD MOCK MD
NPI 1720159502
Pediatrics - Pediatric Gastroenterology in Little Rock, AR
About Donald Mock Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DONALD MOCK MD (NPI 1720159502) is an individual pediatric gastroenterology provider in Little Rock, Arkansas, licensed in Arkansas (R-4373) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Donald Mock Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Donald Mock reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Little Rock, AR 72202
- Reassigned Medicare billing, Arkansas enrollment
- 1,246 clinicians in this Medicare group
Little Rock, AR 72202
- Reassigned Medicare billing, Arkansas enrollment
- 944 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 72202 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LITTLE ROCK, AR 72202
LITTLE ROCK, AR 72202
LITTLE ROCK, AR 72202
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Donald Mock's NPI number?
The NPI number for Donald Mock is 1720159502. It was assigned to this individual provider in the NPPES registry on November 13, 2006.
Where is Donald Mock located?
Donald Mock practices at 800 Marshall St # 653, Little Rock, AR 72202. The listed phone number is (501) 364-1100.
What is Donald Mock's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Gastroenterology, with taxonomy code 2080P0206X.
Is Donald Mock enrolled in Medicare?
Yes. Donald Mock is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Donald Mock's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Donald Mock reassigns Medicare benefits to 2 organizations: University Of Arkansas For Medical Sciences (Little Rock, AR) and Arkansas Childrens Hospital (Little Rock, AR). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Donald Mock's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Donald Mock was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Donald Mock, MD · NPI 1720159502
Pediatric Gastroenterology physician in Little Rock, Arkansas. Individual provider, active in the CMS NPPES registry since November 13, 2006.
## Identity
- **NPI:** 1720159502 (Entity type: Individual)
- **Enumerated:** November 13, 2006
- **Primary specialty:** Pediatrics - Pediatric Gastroenterology · taxonomy 2080P0206X
- **State license:** R-4373 (Arkansas)
- **Sole proprietor:** No
## Practice location
- **Address:** 800 MARSHALL ST # 653, Little Rock, AR 72202-3510
- **Phone:** (501) 364-1100
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): University Of Arkansas For Medical Sciences (NPI 1114255353, Little Rock, AR); Arkansas Childrens Hospital (NPI 1598773079, Little Rock, AR) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 8, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1720159502) · Data from the CMS NPPES public registry.