MARK WILLIAM CHANDLER MD
NPI 1407291941
Internal Medicine in Durham, NC
About Mark William Chandler Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK WILLIAM CHANDLER MD (NPI 1407291941) is an individual internal medicine provider in Durham, North Carolina, licensed in North Carolina (2016-02429) and active in the NPI registry since May 2013. He is enrolled in Medicare PECOS and is a graduate of University Of Oklahoma College Of Medicine (2013).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mark William Chandler Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Mark Chandler reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Durham, NC 27705
- Reassigned Medicare billing, North Carolina enrollment
- Also billed through NPI 1376574798 (North Carolina)
- 1,503 clinicians in this Medicare group
Durham, NC 27710
- Reassigned Medicare billing, North Carolina enrollment
- 3,671 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.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 27705 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
DURHAM, NC 27705
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 Mark Chandler's NPI number?
The NPI number for Mark Chandler is 1407291941. It was assigned to this individual provider in the NPPES registry on May 9, 2013.
Where is Mark Chandler located?
Mark Chandler practices at 2301 Erwin Rd, Durham, NC 27705. The listed phone number is (919) 684-8111.
What is Mark Chandler's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Mark Chandler enrolled in Medicare?
Yes. Mark Chandler is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Mark Chandler's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Chandler reassigns Medicare benefits to 2 organizations: Duke University Health System, Inc. (Durham, NC) and Duke Health Integrated Practice, Inc. (Durham, NC). 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 Mark Chandler's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Chandler accept?
Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of North Carolina, Ambetter of Tennessee and Blue Cross and Blue Shield of NC and 1 other insurer list Mark Chandler as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Mark Chandler was last updated on August 31, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Mark William Chandler, MD · NPI 1407291941
Internal Medicine physician in Durham, North Carolina. Individual provider, active in the CMS NPPES registry since May 9, 2013.
## Identity
- **NPI:** 1407291941 (Entity type: Individual)
- **Enumerated:** May 9, 2013
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 2016-02429 (North Carolina)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 2301 ERWIN RD, Durham, NC 27705-4699
- **Phone:** (919) 684-8111 · **Fax:** (919) 960-9625
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **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): Duke University Health System, Inc. (NPI 1497912232, Durham, NC); Duke Health Integrated Practice, Inc. (NPI 1205553369, Durham, NC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Oklahoma College Of Medicine, class of 2013
## Record status
- **NPPES last updated:** August 31, 2020
---
Source: [NPI Profile](https://npiprofile.com/npi/1407291941) · Data from the CMS NPPES public registry.