Doctor profile · Federal record

Dr. Don Callens, MD

Family Medicine Physician (CMS: Family Practice) · Liberty, TX

  • NPI 1528285079
  • Accepts Medicare
  • 22 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
720 Travis
Liberty, TX 775754828
(936) 336-6439
fax (936) 336-8870

Credentials & registration

NPPES · NUCC
NPI registered
April 2007 — 19 yrs on file
Profile last updated
September 4, 2009
Year of graduation
2004 — 22 yrs since
Specialty taxonomy
207Q00000X — NUCC code
State license (1)
Texas #M3952
Medicaid
TX #202747601

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1528285079. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
1,869
Distinct HCPCS
10
Medicare allowed
$45,805
HCPCS Description Services Patients Avg allowed
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 457 305 $8
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes 337 66 $71
81002 Urinalysis, manual test 182 107 $3
87804 Detection test by immunoassay with direct visual observation for influenza virus 164 68 $16
83036 Hemoglobin a1c level 149 92 $10
71046 X-ray of chest, 2 views 107 83 $22
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg 99 16 $1
87426 Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus 82 66 $35
85610 Blood test, clotting time 72 13 $4
93000 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 60 53 $14

In context: peer comparison

Among 1 peers in this city , average services per provider: 109. This provider delivers 17× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$42
Transactions
2
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
Lilly USA, LLC 1 $21.10
Exact Sciences Corporation 1 $20.97

By nature of payment

Food and Beverage
$42

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
6,374
Patients
1,487
Total drug cost
$237,261
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 958 222 $11,860
Levothyroxine Sodium Generic 823 163 $10,958
Lisinopril Generic 518 140 $3,515
Gabapentin Generic 498 118 $7,362
Amlodipine Besylate Generic 473 120 $3,016
Pantoprazole Sodium Generic 442 106 $5,725
Sertraline Hcl Generic 316 73 $3,019
Furosemide Generic 312 72 $1,614
Hydrochlorothiazide Generic 308 92 $1,943
Potassium Chloride Generic 297 64 $9,491

Frequently asked questions

Auto-generated from federal data
What is Dr. Don Callens's medical specialty?
Dr. Don Callens practices Family Medicine Physician in Liberty, TX.
Where does Dr. Don Callens practice?
Dr. Don Callens practices at 720 Travis, Liberty, TX 775754828. Office phone: 9363366439.
What is Dr. Don Callens's NPI?
Dr. Don Callens's National Provider Identifier (NPI) is 1528285079, issued by NPPES.
Does Dr. Don Callens accept Medicare assignment?
Yes. Dr. Don Callens accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Don Callens commonly perform?
Top Medicare-reported procedures in 2023: Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (HCPCS 85025); Subsequent nursing facility care with straightforward level of medical decision making (HCPCS 99308); Urinalysis, manual test (HCPCS 81002). Source: CMS Medicare Physician & Other Practitioners file.