Doctor profile · Federal record
Dr. Marsha Johnson Williams, M.D., MSCR
Internal Medicine Physician (CMS: Family Practice) · Internal Medicine Physician · Charleston, SC
- NPI 1104112606
- Accepts Medicare
- 15 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
109 Bee St
Charleston, SC 294015703
(843) 577-5011
fax (843) 937-6100
Credentials & registration
- NPI registered
- June 2011 — 15 yrs on file
- Profile last updated
- March 12, 2020
- Year of graduation
- 2011 — 15 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State licenses (2)
- South Carolina #MD81710 · South Carolina #0101255624
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1104112606. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
839
Distinct HCPCS
4
Medicare allowed
$73,833
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 536 | 211 | $74 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 152 | 89 | $113 | |
99239 |
Hospital discharge day management, more than 30 minutes | 139 | 133 | $107 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 12 | 11 | $165 |
In context: peer comparison
Among 74 peers in Charleston Internal Medicine Physician, average services per provider: 177. This provider delivers 4.7× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
144
Patients
44
Total drug cost
$8,705
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Fluoxetine Hcl | Generic | 45 | 0 | $1,358 |
| Cefdinir | Generic | 16 | 16 | $140 |
| Divalproex Sodium | Generic | 16 | 0 | $287 |
| Azithromycin | Generic | 15 | 14 | $42 |
| Memantine Hcl | Generic | 14 | 0 | $71 |
| Prednisone | Generic | 14 | 14 | $48 |
| Levothyroxine Sodium | Generic | 13 | 0 | $78 |
| Eliquis (Apixaban) | Brand | 11 | 0 | $6,681 |
Hospital affiliations
Frequently asked questions
What is Dr. Marsha Johnson Williams's medical specialty?
Dr. Marsha Johnson Williams practices Internal Medicine Physician in Charleston, SC.
Where does Dr. Marsha Johnson Williams practice?
Dr. Marsha Johnson Williams practices at 109 Bee St, Charleston, SC 294015703. Office phone: 8435775011.
What is Dr. Marsha Johnson Williams's NPI?
Dr. Marsha Johnson Williams's National Provider Identifier (NPI) is 1104112606, issued by NPPES.
Does Dr. Marsha Johnson Williams accept Medicare assignment?
Yes. Dr. Marsha Johnson Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Marsha Johnson Williams commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.