Doctor profile · Federal record
Dr. Charles Allison, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · San Francisco, CA
- NPI 1376541060
- Accepts Medicare
- 59 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1 Shrader St, Suite 640
San Francisco, CA 941171016
(415) 752-0100
fax (415) 752-7103
Credentials & registration
- NPI registered
- July 2005 — 21 yrs on file
- Profile last updated
- September 10, 2019
- Year of graduation
- 1967 — 59 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #C33715
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1376541060. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
968
Distinct HCPCS
10
Medicare allowed
$97,533
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 192 | 142 | $74 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 161 | 104 | $107 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 145 | 99 | $151 | |
92014 |
Established patient complete exam of visual system | 121 | 96 | $88 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 100 | 81 | $109 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 61 | 61 | $153 | |
92012 |
Established patient problem focused exam of visual system | 52 | 33 | $58 | |
92083 |
Exam of visual field with extended testing | 25 | 22 | $31 | |
99442 |
Telephone medical discussion with physician, 11-20 minutes | 17 | 15 | $74 | |
90662 |
Influenza vaccine split virus, preservative free | 16 | 16 | $72 |
In context: peer comparison
Among 236 peers in this city , average services per provider: 93. This provider delivers 10× the peer median.Open Payments
Industry payments received
All-time total
$1,861
Transactions
79
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ViiV Healthcare Company | 16 | $339.45 | |
| Lilly USA, LLC | 11 | $310.13 | |
| PFIZER INC. | 11 | $245.37 | |
| Novo Nordisk Inc | 14 | $233.29 | |
| Merck Sharp & Dohme LLC | 7 | $186.97 | |
| Novartis Pharmaceuticals Corporation | 3 | $89.69 | |
| AstraZeneca Pharmaceuticals LP | 3 | $68.68 | |
| Xeris Pharmaceuticals, Inc. | 3 | $66.47 | |
| Theratechnologies Inc. | 3 | $58.13 | |
| Dexcom, Inc. | 2 | $43.37 | |
| Regeneron Healthcare Solutions, Inc. | 1 | $42.08 | |
| Astellas Pharma US Inc | 1 | $34.99 | |
| ABBVIE INC. | 1 | $34.02 | |
| Exact Sciences Corporation | 2 | $33.70 | |
| Gilead Sciences, Inc. | 1 | $29.04 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,900
Patients
647
Total drug cost
$30,497
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 401 | 138 | $6,720 |
| Lisinopril | Generic | 183 | 59 | $2,231 |
| Amlodipine Besylate | Generic | 180 | 67 | $2,535 |
| Metformin Hcl | Generic | 171 | 54 | $2,041 |
| Hydrochlorothiazide | Generic | 163 | 47 | $1,129 |
| Levothyroxine Sodium | Generic | 114 | 37 | $1,915 |
| Pantoprazole Sodium | Generic | 92 | 32 | $1,749 |
| Tamsulosin Hcl | Generic | 91 | 31 | $1,955 |
| Simvastatin | Generic | 85 | 23 | $1,165 |
| Omeprazole | Generic | 78 | 30 | $1,951 |
Hospital affiliations
Frequently asked questions
What is Dr. Charles Allison's medical specialty?
Dr. Charles Allison practices Internal Medicine Physician in San Francisco, CA.
Where does Dr. Charles Allison practice?
Dr. Charles Allison practices at 1 Shrader St, San Francisco, CA 941171016. Office phone: 4157520100.
What is Dr. Charles Allison's NPI?
Dr. Charles Allison's National Provider Identifier (NPI) is 1376541060, issued by NPPES.
Does Dr. Charles Allison accept Medicare assignment?
Yes. Dr. Charles Allison accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Charles Allison commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.