Thomas Sixbey, M.D.
NPI 1205987088 · Psychiatry Physician · Annapolis, MD
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Sixbey, M.D. is a Psychiatry Physician provider in Annapolis, MD (NPI 1205987088).
Provider details
- NPI number
- 1205987088
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D0057929 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
129 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 61 | $69 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 52 | $127 |
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 16 | $188 |
Typical Medicare-allowed amounts for these services range $69–$188 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Lamotrigine | 28 |
| Bupropion Hclbrand: Bupropion Xl | 26 |
| Mirtazapine | 24 |
| Buspirone Hcl | 19 |
| Clonazepam | 19 |
| Zolpidem Tartrate | 16 |
| Aripiprazole | 15 |
| Trazodone Hcl | 15 |
| Alprazolam | 14 |
Practice location
Mailing address
Additional practice locations (1)
- 8258 Veterans Hwy Ste 13Millersville, MD 21108-1564Phone: (410) 768-6088
Registry dates
- Enumerated
- 2007-01-16
- Last updated
- 2026-03-27
- Certified
- 2026-03-27
Frequently asked questions
- What is Thomas Sixbey's NPI number?
- Thomas Sixbey's National Provider Identifier (NPI) is 1205987088, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Sixbey's specialty?
- Thomas Sixbey is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Sixbey located?
- Thomas Sixbey's practice location on file with NPPES is 1997 Annapolis Exchange Pkwy Ste 300, Annapolis, MD 21401-3273.
- What is Thomas Sixbey's phone number?
- The practice phone number listed in the NPPES registry for Thomas Sixbey is (410) 635-1184.
- Does Thomas Sixbey accept Medicare?
- Thomas Sixbey is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Sixbey's NPI active?
- Yes — Thomas Sixbey's NPI (1205987088) is active in the NPPES registry as of the last update on 2026-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.