Dr. John S. Erwin, MD
Family Medicine (Family Medicine Physician)
- Medicare participating
At a glance
- Medical school
- University of Arkansas College of Medicine (1995)
- Years since graduation
- 31
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 886
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 1995Medical school: University of Arkansas College of Medicine
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Family Medicine Physician primary
AR license E0935 -
Emergency Medicine Physician
AR license E-0935
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Chi St. Vincent Hospital Hot Springs Hot Springs, AR
- National PArk Medical Center Hot Springs, AR
Medical groups
- Fands Physical Therapy, Inc (221 clinicians)
- Healthstar Physicians of Hot Springs PLLC (51 clinicians)
- Healthstar Physicians Practice Management PLLC (14 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 886
- Services billed
- 41,920
- Patients’ average age
- 75
| Service | Times | Patients |
|---|---|---|
| Injection, testosterone cypionate, 1 mg | 34,350 | 15 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 1,557 | 285 |
| Established patient office or other outpatient visit, 30-39 minutes | 1,029 | 493 |
| Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 508 | 358 |
| Blood test, comprehensive group of blood chemicals | 492 | 348 |
| Injection, dexamethasone sodium phosphate, 1 mg | 482 | 105 |
| Established patient office or other outpatient visit, 20-29 minutes | 401 | 287 |
| Blood test, lipids (cholesterol and triglycerides) | 320 | 261 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 319 | 283 |
| Injection, ceftriaxone sodium, per 250 mg | 273 | 58 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Hydrocodone-Acetaminophen (hydrocodone/acetaminophen) Other prescribers in Hot Springs, AR | 1,203 |
| Dextroamphetamine-Amphetamine (dextroamphetamine/amphetamine) Other prescribers in Hot Springs, AR | 340 |
| Oxycodone-Acetaminophen (oxycodone hcl/acetaminophen) Other prescribers in Hot Springs, AR | 301 |
| Oxycodone Hcl Other prescribers in Hot Springs, AR | 295 |
| Clonazepam Other prescribers in Hot Springs, AR | 292 |
| Gabapentin Other prescribers in Hot Springs, AR | 285 |
| Levothyroxine Sodium Other prescribers in Hot Springs, AR | 253 |
| Alprazolam Other prescribers in Hot Springs, AR | 248 |
| Lorazepam Other prescribers in Hot Springs, AR | 217 |
| Diazepam Other prescribers in Hot Springs, AR | 208 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 19 companies reported 74 payments worth $1,666 in total to this clinician.
| Otsuka America Pharmaceutical, Inc. | $329 |
|---|---|
| AbbVie Inc. | $308 |
| AstraZeneca Pharmaceuticals LP | $200 |
| Actelion Pharmaceuticals US, Inc. | $142 |
| Novo Nordisk Inc | $121 |
| Pfizer Inc. | $88.42 |
| Amgen Inc. | $74.03 |
| Antares Pharma, Inc. | $67.11 |
| Food and Beverage | $1,666 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.