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

John Gregory Massengale

Individual provider Registered Dietitian · NPI 1568084028

John Gregory Massengale is registered under Registered Dietitian OR Nutrition Professional in Corpus Christi, Texas. Qualified in 2017, 9 years ago. Practices with Healthtexas Provider Network, a 2,539-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Texas.

Years since qualifying
9
Licensed in
TX
In the registry since
2020
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Practice location Address checks out

522 Hancock Ave Apt 122
Corpus Christi, TX 78404-2377
Phone: (972) 979-0514
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X · Licence DT85886 (TX)

Record details

NPI number1568084028
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedMay 7, 2020
Last updated in NPPESMay 7, 2020
Certification dateMay 7, 2020

Medicare enrollment

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

Medicare specialtyREGISTERED DIETITIAN OR NUTRITION PROFESSIONAL
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice Healthtexas Provider Network — 2539 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 patients40
Services billed 189 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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 Healthtexas Provider Network

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2539 clinicians in the practice; 12 are shown here.

Other providers in Corpus Christi