Doctor profile · Federal record
Dr. John Chandler, MD
Internal Medicine Physician (CMS: Internal Medicine) · Amarillo, TX
- NPI 1518958701
- Accepts Medicare
- 28 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
6000 W 9Th Ave
Amarillo, TX 791061702
(806) 355-9531
fax (806) 355-0938
Credentials & registration
- NPI registered
- November 2005 — 21 yrs on file
- Profile last updated
- November 23, 2009
- Year of graduation
- 1998 — 28 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Texas #L7684
- Medicaid
- TX #161956101
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1518958701. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
777
Distinct HCPCS
6
Medicare allowed
$79,812
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 539 | 233 | $122 | |
96372 |
Injection of drug or substance under skin or into muscle | 89 | 37 | $14 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 83 | 64 | $85 | |
99495 |
Transitional care management services for problem of at least moderate complexity | 29 | 22 | $189 | |
J1030 |
Injection, methylprednisolone acetate, 40 mg | 25 | 21 | $8 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 12 | 11 | $13 |
In context: peer comparison
Among 33 peers in Amarillo Internal Medicine Physician, average services per provider: 205. This provider delivers 3.8× the peer median.Open Payments
Industry payments received
All-time total
$14
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Vertex Pharmaceuticals Incorporated | 1 | $13.86 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
2,169
Patients
617
Total drug cost
$31,308
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 273 | 73 | $4,197 |
| Losartan Potassium | Generic | 220 | 66 | $3,195 |
| Atorvastatin Calcium | Generic | 161 | 48 | $2,165 |
| Amlodipine Besylate | Generic | 152 | 43 | $957 |
| Potassium Chloride | Generic | 151 | 48 | $5,331 |
| Metformin Hcl | Generic | 137 | 41 | $1,215 |
| Omeprazole | Generic | 136 | 36 | $1,886 |
| Tramadol Hcl | Generic | 136 | 26 | $814 |
| Gabapentin | Generic | 131 | 38 | $3,086 |
| Tamsulosin Hcl | Generic | 131 | 33 | $2,438 |
Hospital affiliations
Frequently asked questions
What is Dr. John Chandler's medical specialty?
Dr. John Chandler practices Internal Medicine Physician in Amarillo, TX.
Where does Dr. John Chandler practice?
Dr. John Chandler practices at 6000 W 9Th Ave, Amarillo, TX 791061702. Office phone: 8063559531.
What is Dr. John Chandler's NPI?
Dr. John Chandler's National Provider Identifier (NPI) is 1518958701, issued by NPPES.
Does Dr. John Chandler accept Medicare assignment?
Yes. Dr. John Chandler accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Chandler commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Injection of drug or substance under skin or into muscle (HCPCS 96372); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.