Doctor profile · Federal record
Dr. William Marshall, M.D.
Psychiatry Physician (CMS: Psychiatry) · Clemmons, NC
- NPI 1104992627
- Accepts Medicare
- 43 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2255 Lewisville Clemmons RD Ste E
Clemmons, NC 270127460
(336) 766-0505
fax (336) 766-0553
Credentials & registration
- NPI registered
- November 2006 — 20 yrs on file
- Profile last updated
- November 6, 2025
- Year of graduation
- 1983 — 43 yrs since
- Specialty taxonomy
- 2084P0800X — NUCC code
- State license (1)
- North Carolina #28539
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1104992627. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,712
Distinct HCPCS
7
Medicare allowed
$161,643
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90833 |
Psychotherapy with evaluation and management visit, 30 minutes | 610 | 174 | $66 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 381 | 134 | $84 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 319 | 125 | $119 | |
90837 |
Psychotherapy, 1 hour | 292 | 27 | $135 | |
90836 |
Psychotherapy with evaluation and management visit, 45 minutes | 50 | 32 | $80 | |
90838 |
Psychotherapy with evaluation and management visit, 1 hour | 38 | 15 | $104 | |
90792 |
Psychiatric diagnostic evaluation with medical services | 22 | 22 | $189 |
In context: peer comparison
Among 1 peers in Clemmons Psychiatry Physician, average services per provider: 244. This provider delivers 7.0× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
2,502
Patients
562
Total drug cost
$54,897
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Alprazolam | Generic | 647 | 92 | $5,773 |
| Trazodone Hcl | Generic | 301 | 90 | $10,593 |
| Clonazepam | Generic | 259 | 41 | $3,274 |
| Sertraline Hcl | Generic | 148 | 40 | $2,513 |
| Aripiprazole | Generic | 138 | 44 | $8,485 |
| Bupropion Xl (Bupropion Hcl) | Brand | 136 | 40 | $5,122 |
| Duloxetine Hcl | Generic | 136 | 36 | $4,999 |
| Lamotrigine | Generic | 120 | 37 | $2,108 |
| Lorazepam | Generic | 114 | 19 | $869 |
| Venlafaxine Hcl ER (Venlafaxine Hcl) | Brand | 111 | 29 | $3,290 |
Frequently asked questions
What is Dr. William Marshall's medical specialty?
Dr. William Marshall practices Psychiatry Physician in Clemmons, NC.
Where does Dr. William Marshall practice?
Dr. William Marshall practices at 2255 Lewisville Clemmons RD Ste E, Clemmons, NC 270127460. Office phone: 3367660505.
What is Dr. William Marshall's NPI?
Dr. William Marshall's National Provider Identifier (NPI) is 1104992627, issued by NPPES.
Does Dr. William Marshall accept Medicare assignment?
Yes. Dr. William Marshall accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Marshall commonly perform?
Top Medicare-reported procedures in 2023: Psychotherapy with evaluation and management visit (HCPCS 90833); Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.