Quick answers
- Which hospitals does John Manllo Dieck work at?
- Medicare's official clinician data lists John Manllo Dieck at 5 hospitals: Doctors Hosptal at Renaissance, Knapp Medical Center, Rio Grande Regional Hospital, South Texas Health System and Valley Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John Manllo Dieck see patients?
- Medicare's clinician data lists 2 practice locations, including Brownsville, TX and McAllen, TX. Call before your visit to confirm the address.
- What is John Manllo Dieck's specialty?
- Medicare lists Nephrology as the primary specialty, and also Internal Medicine.
- Does John Manllo Dieck accept Medicare assignment?
- Yes. Medicare's clinician data says John Manllo Dieck accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for John Manllo Dieck?
- (956) 542-3472, as listed in official Medicare / NPI Registry data.
- What is John Manllo Dieck's NPI number?
- 1578855680. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John Manllo Dieck works
Medicare's Facility Affiliation Data lists John Manllo Dieck at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Doctors Hosptal at RenaissanceEdinburg, TX · Acute Care Hospital · CCN 450869
- Knapp Medical CenterWeslaco, TX · Acute Care Hospital · CCN 450128
- Rio Grande Regional HospitalMcAllen, TX · Acute Care Hospital · CCN 450711
- South Texas Health SystemEdinburg, TX · Acute Care Hospital · CCN 450119
- Valley Regional Medical CenterBrownsville, TX · Acute Care Hospital · CCN 450662
Practice locations
Addresses where John Manllo Dieck is enrolled with Medicare (CMS data updated 2026-10-02).
- 1080 E Los Ebanos Blvd, Suite ABrownsville, TX 78520 (956) 542‑3472
- 1901 S 1st St, Suite 600McAllen, TX 78503 (956) 631‑6136
Group practices
Medicare enrollment lists John Manllo Dieck as a member of these groups (CMS data updated 2026-10-02).
- South Texas Kidney Specialists, P.A.15 clinicians in the group
- Southern Texas Nephrology PLLC6 clinicians in the group
Specialties
- Nephrologyprimary
- Internal Medicinealso
Other nephrologists in Brownsville
Clinicians with the same Medicare primary specialty in Brownsville, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2009 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1578855680 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians