Doctor profile · Federal record

Dr. John Mayfield, MD

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

  • NPI 1669030722
  • Accepts Medicare
  • 7 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
55 Fruit St
Boston, MA 021142621
(617) 726-8323
Additional location
701 Grove RD
Greenville, SC 296054210
(864) 455-7882
Mailing address
701 Grove RD
Greenville, SC 296054210

Credentials & registration

NPPES · NUCC
NPI registered
June 2019 — 7 yrs on file
Profile last updated
June 27, 2024
Year of graduation
2019 — 7 yrs since
Specialty taxonomy
207R00000X — NUCC code
State licenses (2)
South Carolina #LL82596 · Massachusetts #1017847

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1669030722. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$45
Transactions
2
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
AstraZeneca Pharmaceuticals LP 2 $44.68

By nature of payment

Food and Beverage
$45

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. John Mayfield's medical specialty?
Dr. John Mayfield practices Internal Medicine Physician in Boston, MA.
Where does Dr. John Mayfield practice?
Dr. John Mayfield practices at 55 Fruit St, Boston, MA 021142621. Office phone: 6177268323.
What is Dr. John Mayfield's NPI?
Dr. John Mayfield's National Provider Identifier (NPI) is 1669030722, issued by NPPES.
Does Dr. John Mayfield accept Medicare assignment?
Yes. Dr. John Mayfield accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.