Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Phillip W Kostroun, REGISTEREDDIETITIAN

Individual provider Registered Dietitian · NPI 1003924002

Phillip W Kostroun, REGISTEREDDIETITIAN is registered under Registered Dietitian OR Nutrition Professional in San Antonio, Texas. Qualified in 1996, 30 years ago. Practices with Diabetes and Glandular Disease Clinic PA, a 9-clinician group and accepts Medicare assignment.

Years since qualifying
30
In the registry since
2006
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Practice location Address checks out

5107 Medical Dr
San Antonio, TX 78229 Not confirmed with CMS for 19 years — call before visiting
Phone: (210) 614-8612
Fax: (210) 615-5596
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X

Record details

NPI number1003924002
Entity typeIndividual (Type 1)
GenderMale
Credentials REGISTEREDDIETITIAN
Sole proprietorNo
NPI enumeratedAugust 29, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyREGISTERED DIETITIAN OR NUTRITION PROFESSIONAL
Medical schoolOTHER
Graduated 1996 (30 years in practice)
Group practice Diabetes And Glandular Disease Clinic Pa — 9 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients196
Services billed 1,035 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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.

Colleagues at Diabetes and Glandular Disease Clinic PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in San Antonio