Doctor profile · Federal record
Dr. William Carter, M.D.
Emergency Medicine Physician (CMS: Emergency Medicine) · Portsmouth, NH
- NPI 1083795116
- Accepts Medicare
- 21 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
333 Borthwick Ave
Portsmouth, NH 038017128
(603) 436-5110 - Mailing address
-
330 Borthwick Ave
Portsmouth, NH 038014174
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- February 21, 2023
- Year of graduation
- 2005 — 21 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- New Hampshire #13946
- Medicaid (3)
- NH #30207888 · MA #110082238A · ME #432976099
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1083795116. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
806
Distinct HCPCS
9
Medicare allowed
$55,939
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 305 | 57 | $67 | |
11042 |
Removal of skin and tissue, 20.0 sq cm or less | 165 | 54 | $60 | |
97597 |
Removal of tissue from wound, 20.0 sq cm or less | 95 | 45 | $36 | |
99284 |
Emergency department visit with moderate level of medical decision making | 72 | 70 | $121 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 59 | 59 | $84 | |
11045 |
Removal of skin and tissue, each additional 20.0 sq cm or less | 48 | 19 | $25 | |
99285 |
Emergency department visit with high level of medical decision making | 24 | 24 | $176 | |
99283 |
Emergency department visit with low level of medical decision making | 21 | 20 | $72 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 17 | 13 | $98 |
In context: peer comparison
Among 6 peers in this city , average services per provider: 88. This provider delivers 9.2× the peer median.Open Payments
Industry payments received
All-time total
$25
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Solventum Corporation | 1 | $25.28 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
55
Patients
31
Total drug cost
$625
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 20 | 20 | $92 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 12 | 11 | $152 |
| Cefdinir | Generic | 12 | 0 | $277 |
| Mupirocin | Generic | 11 | 0 | $104 |
Hospital affiliations
Frequently asked questions
What is Dr. William Carter's medical specialty?
Dr. William Carter practices Emergency Medicine Physician in Portsmouth, NH.
Where does Dr. William Carter practice?
Dr. William Carter practices at 333 Borthwick Ave, Portsmouth, NH 038017128. Office phone: 6034365110.
What is Dr. William Carter's NPI?
Dr. William Carter's National Provider Identifier (NPI) is 1083795116, issued by NPPES.
Does Dr. William Carter accept Medicare assignment?
Yes. Dr. William Carter accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Carter commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Removal of skin and tissue, 20.0 sq cm or less (HCPCS 11042); Removal of tissue from wound, 20.0 sq cm or less (HCPCS 97597). Source: CMS Medicare Physician & Other Practitioners file.