Doctor profile · Federal record
Dr. Stephen Simpson, M.D.
Specialist · Ayer, MA
- NPI 1154322964
- 21 yrs on file
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
198 Groton RD, Suite 1
Ayer, MA 014321177
(978) 862-0025
fax (978) 862-0049
Credentials & registration
- NPI registered
- August 2005 — 21 yrs on file
- Profile last updated
- May 14, 2008
- Specialty taxonomy
- 174400000X — NUCC code
- State license (1)
- Massachusetts #205051
- Medicaid
- MA #0101877
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1154322964. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,375
Distinct HCPCS
7
Medicare allowed
$77,075
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J3301 |
Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 1,570 | 120 | $1 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 338 | 201 | $98 | |
20610 |
Aspiration and/or injection of fluid from large joint | 182 | 114 | $71 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 112 | 86 | $63 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 100 | 100 | $122 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 48 | 41 | $140 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 25 | 24 | $138 |
In context: peer comparison
Among 2 peers in Ayer Specialist, average services per provider: 199. This provider delivers 12× the peer median.Open Payments
Industry payments received
All-time total
$21
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Stryker Corporation | 1 | $21.04 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
42
Patients
37
Total drug cost
$218
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Cephalexin | Generic | 22 | 19 | $143 |
| Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) | Brand | 20 | 18 | $75 |
Frequently asked questions
What is Dr. Stephen Simpson's medical specialty?
Dr. Stephen Simpson practices Specialist in Ayer, MA.
Where does Dr. Stephen Simpson practice?
Dr. Stephen Simpson practices at 198 Groton RD, Ayer, MA 014321177. Office phone: 9788620025.
What is Dr. Stephen Simpson's NPI?
Dr. Stephen Simpson's National Provider Identifier (NPI) is 1154322964, issued by NPPES.
What procedures does Dr. Stephen Simpson commonly perform?
Top Medicare-reported procedures in 2023: Injection, triamcinolone acetonide, not otherwise specified, 10 mg (HCPCS J3301); Established patient office or other outpatient visit (HCPCS 99213); Aspiration and/or injection of fluid from large joint (HCPCS 20610). Source: CMS Medicare Physician & Other Practitioners file.