Doctor profile · Federal record

Dr. Charles May, MD

Psychiatry Physician (CMS: Psychiatry) · Knoxville, TN

  • NPI 1245268531
  • Accepts Medicare
  • 41 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1111 N Northshore Dr, S490
Knoxville, TN 379194005
(865) 584-0171
fax (865) 584-0174

Credentials & registration

NPPES · NUCC
NPI registered
June 2006 — 20 yrs on file
Profile last updated
July 8, 2007
Year of graduation
1985 — 41 yrs since
Specialty taxonomy
2084P0800X — NUCC code
State license (1)
Tennessee #MD0000026115

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1245268531. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
422
Distinct HCPCS
2
Medicare allowed
$32,553
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 285 104 $83
90833 Psychotherapy with evaluation and management visit, 30 minutes 137 58 $66

In context: peer comparison

Among 10 peers in Knoxville Psychiatry Physician, average services per provider: 124. This provider delivers 3.4× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$1,046
Transactions
52
Manufacturers
15
Payer (manufacturer) Industry Txns Amount
Otsuka America Pharmaceutical, INC. 9 $182.98
Abbvie INC. 8 $132.59
Corium, LLC 5 $121.80
Janssen Pharmaceuticals, INC 4 $116.15
Neurocrine Biosciences, INC. 4 $91.26
Ironshore Pharmaceuticals INC. 4 $85.33
Axsome Therapeutics, INC. 4 $84.54
Takeda Pharmaceuticals U.S.A., INC. 4 $61.34
Iti, INC. (D/B/A Intra-Cellular Therapies, INC.) 2 $46.82
Lundbeck LLC 2 $35.66
Almatica Pharma LLC 2 $28.48
Supernus Pharmaceuticals, INC. 1 $16.92
Neos Therapeutics, Lp 1 $14.58
Tris Pharma INC 1 $13.63
Alkermes, INC. 1 $13.54

By nature of payment

Food and Beverage
$1,046

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
2,238
Patients
412
Total drug cost
$39,019
Drug Type Claims Patients Total cost
Alprazolam Generic 457 52 $2,240
Bupropion Xl (Bupropion Hcl) Brand 209 43 $6,816
Clonazepam Generic 207 30 $1,323
Trazodone Hcl Generic 150 39 $2,465
Diazepam Generic 149 18 $884
Duloxetine Hcl Generic 145 33 $3,762
Quetiapine Fumarate Generic 143 35 $2,860
Lamotrigine Generic 139 29 $1,407
Zolpidem Tartrate Generic 123 17 $871
Aripiprazole Generic 99 22 $9,148

Frequently asked questions

Auto-generated from federal data
What is Dr. Charles May's medical specialty?
Dr. Charles May practices Psychiatry Physician in Knoxville, TN.
Where does Dr. Charles May practice?
Dr. Charles May practices at 1111 N Northshore Dr, Knoxville, TN 379194005. Office phone: 8655840171.
What is Dr. Charles May's NPI?
Dr. Charles May's National Provider Identifier (NPI) is 1245268531, issued by NPPES.
Does Dr. Charles May accept Medicare assignment?
Yes. Dr. Charles May accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Charles May commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Psychotherapy with evaluation and management visit (HCPCS 90833). Source: CMS Medicare Physician & Other Practitioners file.