Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Gregory Walker, MD, MBA

Individual provider Dermatology Physician · NPI 1487074084

Gregory Walker, MD, MBA practises Dermatology in Waco, Texas. Graduated from Texas Tech University Health Science Center School of Medicine in 2014, 12 years ago. Practices with Oliver Street 5 01(A) Inc, a 168-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
12
Trained at
Texas Tech University Health Science Center School of Medicine
Licensed in
TX
In the registry since
2014
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
MBA — Master of Business Administration
A graduate business degree.

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Practice location Address checks out

300 Richland West Cir Ste 2C
Waco, TX 76712-7935
Phone: (254) 340-6000
Fax: (254) 340-6010
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dermatology Physician (primary) Taxonomy 207N00000X · Licence R5338 (TX)
Dermatology Physician Taxonomy 207N00000X · Licence BP20053749 (TX)

Record details

NPI number1487074084
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , MBA
Sole proprietorNo
NPI enumeratedApril 22, 2014
Last updated in NPPESAugust 26, 2020
Certification dateAugust 26, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDERMATOLOGY
Medical schoolTEXAS TECH UNIVERSITY HEALTH SCIENCE CENTER SCHOOL OF MEDICINE
Graduated 2014 (12 years in practice)
Group practice Oliver Street 5.01(A) Inc — 168 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of skin lesions 1,189 times · 95th percentile
Melanoma (skin cancer) excision 95 times · 92nd percentile
Skin biopsy 308 times · 91st percentile
Removal of skin cancer 378 times · 51st percentile
Removal or shaving of skin growth 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients773
Services billed 5,547 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $3,109 142 payments · a meal or drink at a meeting or visit, not a fee
Education $10 1 payment · educational material or training, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Colleagues at Oliver Street 5 01(A) Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 168 clinicians in the practice; 12 are shown here.

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