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

John Manllo Dieck, MD

Individual provider Internal Medicine Physician · NPI 1578855680

John Manllo Dieck, MD is a Nephrology in McAllen, Texas. Qualified in 2009, 17 years ago. Practices with Southern Texas Nephrology PLLC, a 6-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
17
Licensed in
MI
In the registry since
2011
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1901 S 1st St Ste 600
McAllen, TX 78503-1228
Phone: (956) 631-6136
Fax: (956) 631-1848
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 4301 098 223 (MI)

Record details

NPI number1578855680
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 7, 2011
Last updated in NPPESJuly 21, 2022
Mailing address1901 S 1st St Ste 600, McAllen, TX 78503-1228

Medicare enrollment

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

Medicare specialtyNEPHROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2009 (17 years in practice)
Group practice Southern Texas Nephrology Pllc — 6 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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