Doctor profile · Federal record
Dr. Karin Gaensler, MD
Hematology (Internal Medicine) Physician (CMS: Hematology/Oncology) · Internal Medicine Physician · Medical Oncology Physician · San Francisco, CA
- NPI 1609830215
- Accepts Medicare
- MIPS 70.8 / 100 · 2023
- 45 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
400 Parnassus Ave
San Francisco, CA 941432202
(415) 353-2421
fax (415) 353-2467 - Mailing address
-
1635 Divisadero Street, Suite 625, Box 1821
San Francisco, CA 941430001
Credentials & registration
- NPI registered
- April 2006 — 20 yrs on file
- Profile last updated
- September 22, 2016
- Year of graduation
- 1981 — 45 yrs since
- Specialty taxonomy
- 207RH0000X — NUCC code
- State license (1)
- California #G50093
- Medicaid
- CA #0G5009300
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1609830215. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
175
Distinct HCPCS
3
Medicare allowed
$25,720
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 120 | 33 | $162 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 33 | 12 | $134 | |
38222 |
Biopsy and aspiration of bone marrow sample for diagnosis | 22 | 22 | $85 |
In context: peer comparison
Among 4 peers in this city , average services per provider: 84. This provider delivers 2.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
127
Patients
14
Total drug cost
$602,155
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Acyclovir | Generic | 30 | 14 | $923 |
| Imbruvica (Ibrutinib) | Brand | 30 | 0 | $467,247 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 28 | 0 | $217 |
| Hydroxyurea | Generic | 15 | 0 | $883 |
| Sprycel (Dasatinib) | Brand | 13 | 0 | $132,337 |
| Tacrolimus | Generic | 11 | 0 | $548 |
Hospital affiliations
Frequently asked questions
What is Dr. Karin Gaensler's medical specialty?
Dr. Karin Gaensler practices Hematology (Internal Medicine) Physician in San Francisco, CA.
Where does Dr. Karin Gaensler practice?
Dr. Karin Gaensler practices at 400 Parnassus Ave, San Francisco, CA 941432202. Office phone: 4153532421.
What is Dr. Karin Gaensler's NPI?
Dr. Karin Gaensler's National Provider Identifier (NPI) is 1609830215, issued by NPPES.
Does Dr. Karin Gaensler accept Medicare assignment?
Yes. Dr. Karin Gaensler accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Karin Gaensler commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99215); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Biopsy and aspiration of bone marrow sample for diagnosis (HCPCS 38222). Source: CMS Medicare Physician & Other Practitioners file.