Quick answers
- Does Thornwell H. Parker Iii accept Medicare assignment?
- Yes. Medicare's clinician data says Thornwell H. Parker Iii 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 Thornwell H. Parker Iii see?
- In 2024, CMS data shows 1,402 Original Medicare patients and 36,618 services for Thornwell H. Parker Iii. This counts Original Medicare only and measures volume, not quality.
- What is Thornwell H. Parker Iii's NPI number?
- 1689738619. 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 Thornwell H. Parker Iii, 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 | 1,402 |
|---|---|
| Services billed to Medicare | 36,618 |
| Different services or procedures | 134 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Aminolevulinic acid hcl for topical administration, 10% gel, 10 mg (J7345)23,800 services
- Destruction of precancer skin growth, 2-14 growths (17003)1,380 services
- Pathology examination of tissue using a microscope, intermediate complexity (88305)1,297 services
- Biopsy of related skin growth, first growth (11102)1,002 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)850 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 cholesterol75%
- High blood pressure64%
- Arthritis48%
- Ischemic heart disease27%
- Osteoporosis18%
- Anxiety17%
Practice locations
Addresses where Thornwell H. Parker Iii is enrolled with Medicare (CMS data updated October 2, 2026).
- 8230 Walnut Hill Ln, Suite 808Dallas, TX 75231 (214) 696‑8828
Group practices
Medicare enrollment lists Thornwell H. Parker Iii as a member of this group (CMS data updated October 2, 2026).
- Thornwell H Parker III M D P A4 clinicians in the group
Specialties
Other dermatologists in Dallas
Clinicians with the same Medicare primary specialty in Dallas, TX — not a recommendation.
Other clinicians in Thornwell H Parker III M D P A
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Baylor College Of Medicine |
| Graduation year | 2001 (25 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1689738619 |
| 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
- 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