Dr. William Posten, MD
Mohs Surgery (MOHS-Micrographic Surgery Physician)
- Medicare participating
At a glance
- Medical school
- Yale University School of Medicine (2000)
- Years since graduation
- 26
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 584
Licensed in Texas since 2004, according to the Texas Medical Board. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
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
- 2000Medical school: Yale University School 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
-
MOHS-Micrographic Surgery Physician primary
TX license L8995 (first issued 2004; active) -
Dermatology Physician
TX license L8895 (first issued 2004; active)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Medical groups
- Pdp of Texas, PLLC (59 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
- 584
- Services billed
- 4,865
- Patients’ average age
- 78
| Service | Times | Patients |
|---|---|---|
| Superficial and/or low voltage radiation treatment delivery | 934 | 70 |
| Established patient office or other outpatient visit, 10-19 minutes | 551 | 67 |
| Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks | 391 | 310 |
| Obtaining data needed to develop the optimal radiation treatment, 1 treatment area | 391 | 64 |
| Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks | 250 | 159 |
| Established patient office or other outpatient visit, 20-29 minutes | 142 | 141 |
| Ultrasonic guidance for placement of radiation therapy fields | 133 | 47 |
| Calculation of radiation therapy dose | 122 | 74 |
| New patient office or other outpatient visit, 30-44 minutes | 119 | 119 |
| Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks | 118 | 95 |
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 |
|---|---|
| Cephalexin Other prescribers in Dallas, TX | 529 |
| Doxycycline Hyclate Other prescribers in Dallas, TX | 100 |
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, 7 companies reported 36 payments worth $563 in total to this clinician.
| Kerecis Limited | $307 |
|---|---|
| AbbVie Inc. | $124 |
| Biowound Solutions, Inc. | $37.85 |
| Mimedx Group, Inc. | $34.91 |
| Regeneron Healthcare Solutions, Inc. | $23.91 |
| Convatec Inc. | $20.20 |
| Medtronic, Inc. | $14.56 |
| Food and Beverage | $563 |
|---|
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.