Doctor profile · Federal record

Dr. Thomas Sixbey, M.D.

Psychiatry Physician (CMS: Psychiatry) · Annapolis, MD

  • NPI 1205987088
  • Accepts Medicare
  • 29 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
1997 Annapolis Exchange Pkwy Ste 300
Annapolis, MD 214013273
(410) 635-1184
fax (410) 630-8087
Additional location
8258 Veterans Hwy Ste 13
Millersville, MD 211081564
(410) 768-6088
Mailing address
344 Thorsby RD
Annapolis, MD 214052012

Credentials & registration

NPPES · NUCC
NPI registered
January 2007 — 19 yrs on file
Profile last updated
March 27, 2026
Year of graduation
1997 — 29 yrs since
Specialty taxonomy
2084P0800X — NUCC code
State license (1)
Maryland #D0057929

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1205987088. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
144
Distinct HCPCS
2
Medicare allowed
$11,056
HCPCS Description Services Patients Avg allowed
90833 Psychotherapy with evaluation and management visit, 30 minutes 78 19 $60
99214 Established patient office or other outpatient visit, 30-39 minutes 66 21 $97

In context: peer comparison

Among 3 peers in this city , average services per provider: 64. This provider delivers 2.3× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
66
Patients
0
Total drug cost
$1,078
Drug Type Claims Patients Total cost
Mirtazapine Generic 21 0 $319
Clonazepam Generic 20 0 $112
Venlafaxine Hcl Er (Venlafaxine Hcl) Brand 14 0 $586
Escitalopram Oxalate Generic 11 0 $60

Frequently asked questions

Auto-generated from federal data
What is Dr. Thomas Sixbey's medical specialty?
Dr. Thomas Sixbey practices Psychiatry Physician in Annapolis, MD.
Where does Dr. Thomas Sixbey practice?
Dr. Thomas Sixbey practices at 1997 Annapolis Exchange Pkwy Ste 300, Annapolis, MD 214013273. Office phone: 4106351184.
What is Dr. Thomas Sixbey's NPI?
Dr. Thomas Sixbey's National Provider Identifier (NPI) is 1205987088, issued by NPPES.
Does Dr. Thomas Sixbey accept Medicare assignment?
Yes. Dr. Thomas Sixbey accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Thomas Sixbey commonly perform?
Top Medicare-reported procedures in 2023: Psychotherapy with evaluation and management visit (HCPCS 90833); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.