Doctor profile · Federal record

Dr. John Conklin, MD

Diagnostic Radiology Physician (CMS: Diagnostic Radiology) · Diagnostic Radiology Physician · Diagnostic Radiology Physician · Boston, MA

  • NPI 1861917114
  • 14 yrs in practice
  • Licensed in 3 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
55 Fruit St, Massachusetts General Hospital
Boston, MA 021142621
(617) 726-8323

Credentials & registration

NPPES · NUCC
NPI registered
August 2017 — 9 yrs on file
Profile last updated
September 10, 2024
Year of graduation
2012 — 14 yrs since
Specialty taxonomy
2085R0202X — NUCC code
State licenses (3)
Massachusetts #273718 · California #A193729 · Illinois #036166676

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1861917114. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
19,087
Distinct HCPCS
10
Medicare allowed
$380,751
HCPCS Description Services Patients Avg allowed
A9575 Injection, gadoterate meglumine, 0.1 ml 9,380 59 $0
71045 X-ray of chest, 1 view 1,256 1,168 $9
71046 X-ray of chest, 2 views 1,132 1,079 $11
Q9967 Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml 854 14 $0
74177 Ct scan of abdomen and pelvis with contrast 842 808 $93
72125 Ct scan of upper spine without contrast 509 493 $49
70450 Ct scan head or brain without contrast 488 478 $42
71275 Ct scan of blood vessels of chest with contrast 463 452 $90
74176 Ct scan of abdomen and pelvis without contrast 223 219 $88
71260 Ct scan of chest with contrast 191 189 $57

In context: peer comparison

Among 231 peers in this city , average services per provider: 259. This provider delivers 74× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. John Conklin's medical specialty?
Dr. John Conklin practices Diagnostic Radiology Physician in Boston, MA.
Where does Dr. John Conklin practice?
Dr. John Conklin practices at 55 Fruit St, Boston, MA 021142621. Office phone: 6177268323.
What is Dr. John Conklin's NPI?
Dr. John Conklin's National Provider Identifier (NPI) is 1861917114, issued by NPPES.
Does Dr. John Conklin accept Medicare assignment?
Dr. John Conklin does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.
What procedures does Dr. John Conklin commonly perform?
Top Medicare-reported procedures in 2023: Injection, gadoterate meglumine, 0.1 ml (HCPCS A9575); X-ray of chest, 1 view (HCPCS 71045); X-ray of chest, 2 views (HCPCS 71046). Source: CMS Medicare Physician & Other Practitioners file.