Doctor profile · Federal record
Dr. Shawn Hassler, M.D.
Infectious Disease Physician (CMS: Internal Medicine) · San Francisco, CA
- NPI 1427122928
- Accepts Medicare
- MIPS 27.1 / 100 · 2023
- 31 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
870 Market St, Suite 600
San Francisco, CA 941023002
(415) 397-0700
fax (415) 397-6802
Credentials & registration
- NPI registered
- November 2006 — 20 yrs on file
- Profile last updated
- April 9, 2008
- Year of graduation
- 1995 — 31 yrs since
- Specialty taxonomy
- 207RI0200X — NUCC code
- State license (1)
- California #A062683
- Medicaid
- CA #CNC324854
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1427122928. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
979
Distinct HCPCS
7
Medicare allowed
$130,667
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 606 | 182 | $150 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 133 | 87 | $208 | |
96372 |
Injection of drug or substance under skin or into muscle | 98 | 11 | $17 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 67 | 47 | $107 | |
G0008 |
Administration of influenza virus vaccine | 36 | 35 | $34 | |
90662 |
Influenza vaccine split virus, preservative free | 24 | 23 | $66 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 15 | 15 | $17 |
In context: peer comparison
Among 19 peers in San Francisco Infectious Disease Physician, average services per provider: 69. This provider delivers 14× the peer median.Open Payments
Industry payments received
All-time total
$64,957
Transactions
209
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Gilead Sciences, INC. | 52 | $29,864.65 | |
| ViiV Healthcare Company | 78 | $27,859.67 | |
| Theratechnologies INC. | 12 | $5,302.49 | |
| Emd Serono, INC. | 17 | $728.51 | |
| Abbvie INC. | 9 | $206.20 | |
| Merck Sharp & Dohme LLC | 7 | $200.63 | |
| Napo Pharmaceuticals INC | 9 | $180.92 | |
| Antares Pharma, INC. | 7 | $180.64 | |
| Novo Nordisk INC | 7 | $147.76 | |
| AstraZeneca Pharmaceuticals Lp | 3 | $69.85 | |
| Idorsia Pharmaceuticals US INC | 2 | $44.48 | |
| Verity Pharmaceuticals INC. | 2 | $41.55 | |
| Bausch Health US, LLC | 2 | $34.36 | |
| Amgen INC. | 1 | $25.19 | |
| Lilly USA, LLC | 1 | $23.96 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
2,683
Patients
530
Total drug cost
$4,060,407
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Biktarvy (Bictegrav/Emtricit/Tenofov Ala) | Brand | 474 | 59 | $2,041,080 |
| Atorvastatin Calcium | Generic | 357 | 82 | $4,520 |
| Acyclovir | Generic | 208 | 41 | $7,772 |
| Pifeltro (Doravirine) | Brand | 179 | 19 | $324,889 |
| Valacyclovir (Valacyclovir Hcl) | Brand | 179 | 45 | $12,179 |
| Lisinopril | Generic | 157 | 40 | $1,879 |
| Tivicay (Dolutegravir Sodium) | Brand | 142 | 17 | $375,577 |
| Rosuvastatin Calcium | Generic | 141 | 30 | $3,259 |
| Descovy (Emtricitabine/Tenofov Alafenam) | Brand | 138 | 19 | $389,173 |
| Tamsulosin Hcl | Generic | 127 | 42 | $3,241 |
Frequently asked questions
What is Dr. Shawn Hassler's medical specialty?
Dr. Shawn Hassler practices Infectious Disease Physician in San Francisco, CA.
Where does Dr. Shawn Hassler practice?
Dr. Shawn Hassler practices at 870 Market St, San Francisco, CA 941023002. Office phone: 4153970700.
What is Dr. Shawn Hassler's NPI?
Dr. Shawn Hassler's National Provider Identifier (NPI) is 1427122928, issued by NPPES.
Does Dr. Shawn Hassler accept Medicare assignment?
Yes. Dr. Shawn Hassler accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Shawn Hassler 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 99215); Injection of drug or substance under skin or into muscle (HCPCS 96372). Source: CMS Medicare Physician & Other Practitioners file.