Quick answers
- Does Carl G. Chakmakjian accept Medicare assignment?
- Yes. Medicare's clinician data says Carl G. Chakmakjian accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Carl G. Chakmakjian see?
- In 2024, CMS data shows 604 Original Medicare patients and 92,990 services for Carl G. Chakmakjian. This counts Original Medicare only and measures volume, not quality.
- What is Carl G. Chakmakjian's NPI number?
- 1285675306. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Carl G. Chakmakjian, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 604 |
|---|---|
| Services billed to Medicare | 92,990 |
| Different services or procedures | 132 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Injection, ferumoxytol, for treatment of iron deficiency anemia, 1 mg (non-esrd use) (Q0138)10,200 services
- Injection, oxaliplatin, 0.5 mg (J9263)7,000 services
- Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)6,900 services
- Injection, darbepoetin alfa, 1 microgram (non-esrd use) (J0881)4,825 services
- Injection, paclitaxel, 1 mg (J9267)3,378 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol74%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)50%
- Arthritis44%
- Ischemic heart disease34%
- Diabetes30%
Hospitals where Carl G. Chakmakjian works
Medicare's Facility Affiliation Data lists Carl G. Chakmakjian at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Ascension ProvidenceWaco, TX · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 450042
- Coryell Memorial HospitalGatesville, TX · Critical Access Hospital · Emergency services: listed by Medicare · CCN 451379
- Freestone Medical CenterFairfield, TX · Acute Care Hospital · Emergency services: listed by Medicare · CCN 450658
- Limestone Medical CenterGroesbeck, TX · Critical Access Hospital · Emergency services: listed by Medicare · CCN 451303
- Parkview Regional HospitalMexia, TX · Acute Care Hospital · Emergency services: listed by Medicare · CCN 450400
Practice locations
Addresses where Carl G. Chakmakjian is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.
- 1507 W Main StGatesville, TX 76528 (254) 399‑0741
- 1700 W State Hwy 6Waco, TX 76712 (254) 399‑0741
- 2026 S Jackson StJacksonville, TX 75766 (903) 586‑2456
- 514 S Bonham StMexia, TX 76667
- 6520 Horizon CirWaco, TX 76712 (254) 755‑4460
Group practices
Medicare enrollment lists Carl G. Chakmakjian as a member of this group (CMS data updated October 2, 2026).
- Texas Oncology PA1,014 clinicians in the group
Specialties
- Medical Oncologyprimary
- Internal Medicinealso
Other oncologists in Texas
Clinicians with the same Medicare primary specialty in Texas — not a recommendation.
Other clinicians in Texas Oncology PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of North Texas Hsc, College Of Osteopathic Med |
| Graduation year | 2000 (26 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1285675306 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians