Doctor profile · Federal record
Dr. Michael Marshall, MD
Internal Medicine Physician (CMS: Internal Medicine) · Southfield, MI
- NPI 1487654091
- Accepts Medicare
- MIPS 80.5 / 100 · 2023
- 52 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
22255 Greenfield RD, 410
Southfield, MI 480753710
(248) 849-2850
fax (248) 849-5751 - Mailing address
-
15990 W 9 Mile RD
Southfield, MI 480754826
Credentials & registration
- NPI registered
- July 2005 — 21 yrs on file
- Profile last updated
- February 24, 2011
- Year of graduation
- 1974 — 52 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Michigan #4301035094
- Medicaid
- MI #448574110
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1487654091. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
199
Distinct HCPCS
3
Medicare allowed
$19,154
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 94 | 58 | $99 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 61 | 46 | $67 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 44 | 44 | $130 |
In context: peer comparison
Among 64 peers in Southfield Internal Medicine Physician, average services per provider: 113. This provider delivers 1.8× the peer median.Open Payments
Industry payments received
All-time total
$40
Transactions
2
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Axsome Therapeutics, INC. | 1 | $24.90 | |
| Pfizer INC. | 1 | $15.38 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
3,062
Patients
972
Total drug cost
$47,836
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 507 | 158 | $9,761 |
| Amlodipine Besylate | Generic | 504 | 149 | $5,585 |
| Losartan Potassium | Generic | 250 | 84 | $4,304 |
| Metformin Hcl | Generic | 232 | 77 | $2,572 |
| Lisinopril | Generic | 225 | 58 | $2,364 |
| Levothyroxine Sodium | Generic | 161 | 43 | $3,052 |
| Metoprolol Succinate | Generic | 154 | 44 | $4,089 |
| Potassium Chloride | Generic | 152 | 43 | $3,117 |
| Gabapentin | Generic | 140 | 49 | $2,079 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 134 | 39 | $3,780 |
Hospital affiliations
Frequently asked questions
What is Dr. Michael Marshall's medical specialty?
Dr. Michael Marshall practices Internal Medicine Physician in Southfield, MI.
Where does Dr. Michael Marshall practice?
Dr. Michael Marshall practices at 22255 Greenfield RD, Southfield, MI 480753710. Office phone: 2488492850.
What is Dr. Michael Marshall's NPI?
Dr. Michael Marshall's National Provider Identifier (NPI) is 1487654091, issued by NPPES.
Does Dr. Michael Marshall accept Medicare assignment?
Yes. Dr. Michael Marshall accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Marshall commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439). Source: CMS Medicare Physician & Other Practitioners file.