Warren Andrew Chang, M.D.
Internal Medicine Physician · Abingdon, VA
Warren Andrew Chang, M.D. is an internal medicine physician with a practice address in Abingdon, Virginia, and NPI 1407057920, issued on May 31, 2007. Check the license (Virginia 0101241447, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Warren Andrew Chang
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 0101241447 VA
Self-reported in NPPES; status is on the state search - Practice location
- 16000 Johnston Memorial Dr, Abingdon, VA 24211
- Phone
- (276) 258-4050
- Enumerated
- May 31, 2007
- Record last updated
- Mar 22, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (276) 258-4056
- Medicaid ID
- 1407057920 VA
- Medicare enrollment
- Enrolled (PECOS I20160503002352); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,599 in Virginia → Look up another NPI →
Also registered at 16000 Johnston Memorial Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Makynzee AdamsStudent in an Organized Health Care Education/Training Program1275479743
- Stephanie Alford, MDOrthopaedic Surgery Physician1386824332
- Eric Anderson, CRNACertified Registered Nurse Anesthetist1174154413
- Jerod Bachman, DOStudent in an Organized Health Care Education/Training Program1679133540
- William Baker, MDInternal Medicine Physician1124196787
- Steven Bandy, MDEmergency Medical Services (Emergency Medicine) Physician1205942596
Verify Warren Andrew Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101241447Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average internal medicine physician in 2024
264 Medicare Part D claims for 111 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone25 claims
- Amoxicillin-Clavulanate Potass18 claims
- Doxycycline Hyclate15 claims
- Albuterol Sulfate Hfa13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $29.56
1 payment: food and beverage; the largest payer was Inari Medical, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital affiliation
- Catawba Valley Medical CenterHickory, NC · Acute Care Hospitals2 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Warren Andrew Chang among 3,599 internal medicine physician records in Virginia
Warren Andrew Chang, M.D. is one of 3,599 internal medicine physician records with a practice address in Virginia. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 45% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1992 · median 2003 among the 2,234 with a school on file
- Record last updated2016 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
35 internal medicine physician records list a practice address in Abingdon
They are 35 of the 796 NPPES records with a practice address in Abingdon, and 3,599 internal medicine physician records in Virginia.
All 3,599 in Virginia → Every provider in Abingdon → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Tariku Ayalew, M.D.Abingdon, VA 242111073752036
- William Baker, MDAbingdon, VA 242111124196787
- James Bowden, M.D.Abingdon, VA 242111245425776
- Christopher Byrd, D.O.Abingdon, VA 242111306100789
- Camelia Chirculescu, M.D.Abingdon, VA 242111285629089
- Beshir MohamedAbingdon, VA 242111356662340
- Moe Mya, M.D.Abingdon, VA 242111104930502
- John Ray, MDAbingdon, VA 242111871562181
Common questions
What is Warren Andrew Chang, M.D.'s NPI number?
Warren Andrew Chang, M.D.'s National Provider Identifier (NPI) is 1407057920, issued on May 31, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Warren Andrew Chang, M.D. located?
The NPPES record lists a practice address at 16000 Johnston Memorial Dr, Abingdon, VA, 24211. Phone: (276) 258-4050. Providers update this record themselves, so call before visiting.
How can I verify Warren Andrew Chang, M.D.'s license?
NPPES lists Virginia license number 0101241447, as entered by the provider. Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Warren Andrew Chang, M.D. prescribe under Medicare Part D?
In 2024, Warren Andrew Chang, M.D. had 264 Medicare Part D claims for 111 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.