Doctor profile · Federal record
Dr. Mark Garwood, M.D.
Sleep Medicine (Psychiatry & Neurology) Physician (CMS: Sleep Medicine) · Ann Arbor, MI
- NPI 1144231077
- Accepts Medicare
- 25 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1500 E Medical Center Dr
Ann Arbor, MI 481095000
(734) 936-4000 - Mailing address
-
3621 S State St
Ann Arbor, MI 481081633
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- February 3, 2020
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 2084S0012X — NUCC code
- State license (1)
- Michigan #4301085190
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1144231077. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
257
Distinct HCPCS
10
Medicare allowed
$26,478
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 49 | 48 | $65 | |
95811 |
Sleep study in sleep lab with continuous airway pressure (6 years or older) | 41 | 41 | $120 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 35 | 35 | $133 | |
95810 |
Sleep study in sleep lab (6 years or older) | 32 | 32 | $116 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 21 | 21 | $96 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 15 | 15 | $99 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 14 | 14 | $64 | |
G0399 |
Home sleep test (hst) with type iii portable monitor, unattended; minimum of 4 channels: 2 respiratory movement/airflow, 1 ecg/heart rate and 1 oxygen saturation | 14 | 14 | $41 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 13 | 13 | $145 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 12 | 12 | $136 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 23. This provider delivers 11× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
119
Patients
11
Total drug cost
$6,997
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Gabapentin | Generic | 28 | 11 | $591 |
| Methylphenidate Hcl | Generic | 25 | 0 | $449 |
| Armodafinil | Generic | 20 | 0 | $5,369 |
| Trazodone Hcl | Generic | 19 | 0 | $385 |
| Zolpidem Tartrate | Generic | 14 | 0 | $51 |
| Methadone Hcl | Generic | 13 | 0 | $152 |
Hospital affiliations
Frequently asked questions
What is Dr. Mark Garwood's medical specialty?
Dr. Mark Garwood practices Sleep Medicine (Psychiatry & Neurology) Physician in Ann Arbor, MI.
Where does Dr. Mark Garwood practice?
Dr. Mark Garwood practices at 1500 E Medical Center Dr, Ann Arbor, MI 481095000. Office phone: 7349364000.
What is Dr. Mark Garwood's NPI?
Dr. Mark Garwood's National Provider Identifier (NPI) is 1144231077, issued by NPPES.
Does Dr. Mark Garwood accept Medicare assignment?
Yes. Dr. Mark Garwood accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Garwood commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); 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.