Doctor profile · Federal record
Dr. Gregory Ackroyd, M.D.
Sleep Medicine (Psychiatry & Neurology) Physician (CMS: Neurology) · Neurology Physician · Santa Rosa, CA
- NPI 1538192984
- Accepts Medicare
- 26 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
585 W College Ave
Santa Rosa, CA 954015000
(707) 525-9616
fax (707) 526-2358
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- October 14, 2021
- Year of graduation
- 2000 — 26 yrs since
- Specialty taxonomy
- 2084S0012X — NUCC code
- State license (1)
- California #A84348
- Medicaid
- NC #5901340
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1538192984. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,004
Distinct HCPCS
6
Medicare allowed
$148,910
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 480 | 366 | $138 | |
95811 |
Sleep study in sleep lab with continuous airway pressure (6 years or older) | 212 | 197 | $140 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 174 | 174 | $180 | |
95810 |
Sleep study in sleep lab (6 years or older) | 89 | 87 | $137 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 35 | 35 | $236 | |
G0400 |
Home sleep test (hst) with type iv portable monitor, unattended; minimum of 3 channels | 14 | 14 | $99 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 167. This provider delivers 6.0× the peer median.Open Payments
Industry payments received
All-time total
$583
Transactions
16
Manufacturers
11
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Philips North America LLC | 4 | $194.05 | |
| Boehringer Ingelheim Pharmaceuticals, Inc. | 3 | $91.99 | |
| HARMONY BIOSCIENCES LLC | 1 | $84.99 | |
| Itamar Medical Inc | 1 | $54.50 | |
| Regeneron Healthcare Solutions, Inc. | 1 | $36.38 | |
| GENZYME CORPORATION | 1 | $34.56 | |
| Avadel CNS Pharmaceuticals, LLC | 1 | $27.84 | |
| GlaxoSmithKline, LLC. | 1 | $21.37 | |
| AstraZeneca Pharmaceuticals LP | 1 | $16.56 | |
| JAZZ PHARMACEUTICALS INC. | 1 | $16.18 | |
| ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) | 1 | $4.35 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
138
Patients
0
Total drug cost
$3,447
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Armodafinil | Generic | 31 | 0 | $1,959 |
| Gabapentin | Generic | 22 | 0 | $470 |
| Fluticasone Propionate | Generic | 20 | 0 | $413 |
| Zolpidem Tartrate | Generic | 20 | 0 | $49 |
| Trazodone Hcl | Generic | 19 | 0 | $316 |
| Eszopiclone | Generic | 14 | 0 | $90 |
| Methadone Hcl | Generic | 12 | 0 | $150 |
Frequently asked questions
What is Dr. Gregory Ackroyd's medical specialty?
Dr. Gregory Ackroyd practices Sleep Medicine (Psychiatry & Neurology) Physician in Santa Rosa, CA.
Where does Dr. Gregory Ackroyd practice?
Dr. Gregory Ackroyd practices at 585 W College Ave, Santa Rosa, CA 954015000. Office phone: 7075259616.
What is Dr. Gregory Ackroyd's NPI?
Dr. Gregory Ackroyd's National Provider Identifier (NPI) is 1538192984, issued by NPPES.
Does Dr. Gregory Ackroyd accept Medicare assignment?
Yes. Dr. Gregory Ackroyd accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gregory Ackroyd commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Sleep study in sleep lab with continuous airway pressure (6 years or older) (HCPCS 95811); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.