Doctor profile · Federal record

Dr. John Manllo Dieck, M.D.

Internal Medicine Physician (CMS: Nephrology) · McAllen, TX

  • NPI 1578855680
  • Accepts Medicare
  • 17 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1901 S 1St St Ste 600
McAllen, TX 785031228
(956) 631-6136
fax (956) 631-1848

Credentials & registration

NPPES · NUCC
NPI registered
May 2011 — 15 yrs on file
Profile last updated
July 21, 2022
Year of graduation
2009 — 17 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
Michigan #4301 098 223

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1578855680. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
1,181
Distinct HCPCS
8
Medicare allowed
$186,275
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 469 181 $77
90960 Dialysis services, 4 or more physician visits per month (20 years or older) 260 76 $341
99214 Established patient office or other outpatient visit, 30-39 minutes 146 81 $101
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 141 104 $116
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 62 60 $170
90961 Dialysis services, 2-3 physician visits per month (20 years or older) 52 34 $281
99213 Established patient office or other outpatient visit, 20-29 minutes 30 24 $82
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 21 21 $127

In context: peer comparison

Among 17 peers in McAllen Internal Medicine Physician, average services per provider: 95. This provider delivers 12× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$2,920
Transactions
45
Manufacturers
8
Payer (manufacturer) Industry Txns Amount
Csl Behring 6 $2,225.15
Vifor Pharma, INC. 15 $269.50
Fresenius USA Marketing, INC. 9 $176.29
Mallinckrodt Hospital Products INC. 5 $87.65
Travere Therapeutics, INC. 6 $82.21
Akebia Therapeutics INC 2 $42.01
Calliditas Therapeutics US INC. 1 $22.87
AstraZeneca Pharmaceuticals Lp 1 $13.99

By nature of payment

Travel and Lodging
$2,080
Food and Beverage
$823
Education
$17

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
895
Patients
255
Total drug cost
$645,612
Drug Type Claims Patients Total cost
Sevelamer Carbonate Generic 152 52 $57,516
Veltassa (Patiromer Calcium Sorbitex) Brand 98 29 $157,701
Velphoro (Sucroferric Oxyhydroxide) Brand 85 19 $231,612
Furosemide Generic 82 29 $504
Nifedipine ER (Nifedipine) Brand 74 25 $5,096
Auryxia (Ferric Citrate) Brand 56 19 $164,301
Hydralazine Hcl Generic 48 18 $899
Losartan Potassium Generic 45 21 $777
Prednisone Generic 45 12 $361
Lisinopril Generic 41 0 $392

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. John Manllo Dieck's medical specialty?
Dr. John Manllo Dieck practices Internal Medicine Physician in McAllen, TX.
Where does Dr. John Manllo Dieck practice?
Dr. John Manllo Dieck practices at 1901 S 1St St Ste 600, McAllen, TX 785031228. Office phone: 9566316136.
What is Dr. John Manllo Dieck's NPI?
Dr. John Manllo Dieck's National Provider Identifier (NPI) is 1578855680, issued by NPPES.
Does Dr. John Manllo Dieck accept Medicare assignment?
Yes. Dr. John Manllo Dieck accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Manllo Dieck commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Dialysis services, 4 or more physician visits per month (20 years or older) (HCPCS 90960); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.