John Richard Chandler, MD
Internal Medicine Physician · Amarillo, TX
John Richard Chandler, MD is an internal medicine physician with a practice address in Amarillo, Texas, and NPI 1518958701, issued on Nov 4, 2005. Check the license (Texas L7684, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- John Richard Chandler
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- L7684 TX
Self-reported in NPPES; status is on the state search - Practice location
- 6000 W 9TH Ave, Amarillo, TX 79106
- Phone
- (806) 355-9531
- Enumerated
- Nov 4, 2005
- Record last updated
- Nov 23, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (806) 355-0938
- Medicaid ID
- 161956101 TX
- Medicare enrollment
- Enrolled (PECOS I20031112000480); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Verify John Richard Chandler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license L7684Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% more Medicare Part D claims than the average internal medicine physician in 2024
5,021 Medicare Part D claims for 322 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 184 claims were for opioids.
Most prescribed
- Levothyroxine Sodium237 claims
- Losartan Potassium216 claims
- Atorvastatin Calcium178 claims
- Metformin Hcl159 claims
- Potassium Chloride153 claims
- Amlodipine Besylate151 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: $13.86
1 payment: food and beverage; the largest payer was Vertex Pharmaceuticals Incorporated. 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.
John Richard Chandler among 9,175 internal medicine physician records in Texas
John Richard Chandler, MD is one of 9,175 internal medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1998 · median 2004 among the 6,088 with a school on file
- Record last updated2009 · 49% 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 Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
82 internal medicine physician records list a practice address in Amarillo
They are 82 of the 3,934 NPPES records with a practice address in Amarillo, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Amarillo → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ako Bradford, MDAmarillo, TX 791061891738712
- Jon Bush, M.D.Amarillo, TX 791061912940891
- Nam Do, M.D.Amarillo, TX 791061063456572
- Rebeca Flores Morales, MDAmarillo, TX 791061699767657
- Anuradha Gopalachar, M.D.Amarillo, TX 791061093775256
- Mohamedaouf Khaznadar, MDAmarillo, TX 791061790712784
- Hernan Miranda, MDAmarillo, TX 791061477547339
- Holly Mitchell, MDAmarillo, TX 791061881630622
Common questions
What is John Richard Chandler, MD's NPI number?
John Richard Chandler, MD's National Provider Identifier (NPI) is 1518958701, issued on Nov 4, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Richard Chandler, MD located?
The NPPES record lists a practice address at 6000 W 9TH Ave, Amarillo, TX, 79106. Phone: (806) 355-9531. Providers update this record themselves, so call before visiting.
How can I verify John Richard Chandler, MD's license?
NPPES lists Texas license number L7684, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Richard Chandler, MD prescribe under Medicare Part D?
In 2024, John Richard Chandler, MD had 5,021 Medicare Part D claims for 322 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.