Doctor profile · Federal record

Dr. JOHN SHEKLETON, M.D.

Gastroenterology Physician (CMS: GASTROENTEROLOGY) · Specialist · Specialist · TUCSON, AZ

  • NPI 1649277666
  • Accepts Medicare
  • MIPS 89.3 / 100 · 2023
  • 41 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1871 W ORANGE GROVE RD STE 101
TUCSON, AZ 857041289
(520) 219-8342
fax (520) 219-7117

Credentials & registration

NPPES · NUCC
NPI registered
July 2005 — 21 yrs on file
Profile last updated
November 28, 2022
Year of graduation
1985 — 41 yrs since
Specialty taxonomy
207RG0100X — NUCC code
State licenses (2)
Kentucky #29401 · Arizona #29600
Medicaid
KY #PENDING

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1649277666. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
766
Distinct HCPCS
10
Medicare allowed
$94,299
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 135 109 $88
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 96 90 $97
99204 New patient office or other outpatient visit, 45-59 minutes 73 73 $163
99231 Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 66 46 $48
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 55 55 $126
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare 49 49 $242
99203 New patient office or other outpatient visit, 30-44 minutes 33 33 $110
99214 Established patient office or other outpatient visit, 30-39 minutes 31 25 $122
G0105 Colorectal cancer screening; colonoscopy on individual at high risk 29 29 $177
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk 27 27 $180

In context: peer comparison

Among 17 peers in this city , average services per provider: 72. This provider delivers 11× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$586
Transactions
18
Manufacturers
6
Payer (manufacturer) Industry Txns Amount
ABBVIE INC. 13 $252.16
Madrigal Pharmaceuticals 1 $145.61
Gilead Sciences, Inc. 1 $121.83
Phathom Pharmaceuticals, Inc. 1 $25.62
IRONWOOD PHARMACEUTICALS, INC 1 $22.92
Ipsen Biopharmaceuticals, Inc 1 $17.83

By nature of payment

Food and Beverage
$586

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
589
Patients
369
Total drug cost
$68,212
Drug Type Claims Patients Total cost
Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) Brand 204 195 $3,466
Pantoprazole Sodium Generic 149 71 $2,954
Omeprazole Generic 66 28 $924
Famotidine Generic 43 29 $608
Peg-3350 And Electrolytes (Peg3350/Sod Sulf,bicarb,cl/Kcl) Brand 26 25 $535
Creon (Lipase/Protease/Amylase) Brand 21 0 $43,702
Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,mag Sulfates) Brand 21 21 $1,592
Sucralfate Generic 14 0 $1,130
Mesalamine Er (Mesalamine) Brand 12 0 $6,806
Dicyclomine Hcl Generic 11 0 $184

Hospital affiliations

CMS Hospital Compare