Doctor profile · Federal record
Dr. Clarissa Johnston, MD
Hospice and Palliative Medicine (Internal Medicine) Physician (CMS: Hospice/Palliative Care) · Hospitalist Physician · Internal Medicine Physician · Austin, TX
- NPI 1649342445
- Accepts Medicare
- MIPS 72.5 / 100 · 2023
- 31 yrs in practice
- Licensed in 2 states
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
601 E 15Th St
Austin, TX 787011930
(512) 324-1000 - Mailing address
-
1800 Harrison St Fl 7
Oakland, CA 946123429
Credentials & registration
- NPI registered
- November 2006 — 20 yrs on file
- Profile last updated
- October 8, 2015
- Year of graduation
- 1995 — 31 yrs since
- Specialty taxonomy
- 207RH0002X — NUCC code
- State licenses (2)
- Texas #Q1181 · California #A62097
- Medicaid (2)
- CA #00A620970 · TX #341861801
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1649342445. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
181
Distinct HCPCS
4
Medicare allowed
$19,291
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 75 | 40 | $117 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 66 | 32 | $78 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 24 | 24 | $171 | |
99238 |
Hospital discharge day management, 30 minutes or less | 16 | 16 | $80 |
In context: peer comparison
Among 3 peers in this city , average services per provider: 108. This provider delivers 1.7× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Clarissa Johnston's medical specialty?
Dr. Clarissa Johnston practices Hospice and Palliative Medicine (Internal Medicine) Physician in Austin, TX.
Where does Dr. Clarissa Johnston practice?
Dr. Clarissa Johnston practices at 601 E 15Th St, Austin, TX 787011930. Office phone: 5123241000.
What is Dr. Clarissa Johnston's NPI?
Dr. Clarissa Johnston's National Provider Identifier (NPI) is 1649342445, issued by NPPES.
Does Dr. Clarissa Johnston accept Medicare assignment?
Yes. Dr. Clarissa Johnston accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Clarissa Johnston commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.