Doctor profile · Federal record
Dr. Joanne Mortimer, M.D.
Medical Oncology Physician (CMS: Medical Oncology) · Internal Medicine Physician · Duarte, CA
- NPI 1558319038
- Accepts Medicare
- MIPS 91.9 / 100 · 2023
- 49 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1500 Duarte RD
Duarte, CA 910103012
(626) 359-8111 - Mailing address
-
Po Box 512185
Los Angeles, CA 900510185
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- November 18, 2020
- Year of graduation
- 1977 — 49 yrs since
- Specialty taxonomy
- 207RX0202X — NUCC code
- State license (1)
- California #G87336
- Medicaid
- CA #00G873360
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1558319038. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
705
Distinct HCPCS
4
Medicare allowed
$76,799
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 471 | 187 | $103 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 104 | 66 | $151 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 99 | 81 | $69 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 31 | 31 | $191 |
In context: peer comparison
Among 16 peers in Duarte Medical Oncology Physician, average services per provider: 239. This provider delivers 2.9× the peer median.Open Payments
Industry payments received
All-time total
$9,928
Transactions
6
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| AstraZeneca Pharmaceuticals Lp | 2 | $7,315.00 | |
| Ge Healthcare | 2 | $2,195.14 | |
| Stemline Therapeutics INC. | 1 | $390.00 | |
| Novartis Pharmaceuticals Corporation | 1 | $27.84 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
138
Patients
0
Total drug cost
$945,701
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Everolimus | Generic | 23 | 0 | $169,208 |
| Orserdu (Elacestrant Hcl) | Brand | 23 | 0 | $498,406 |
| Lorazepam | Generic | 18 | 0 | $289 |
| Anastrozole | Generic | 17 | 0 | $617 |
| Kisqali (Ribociclib Succinate) | Brand | 17 | 0 | $275,764 |
| Letrozole | Generic | 16 | 0 | $293 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 12 | 0 | $339 |
| Tamoxifen Citrate | Generic | 12 | 0 | $786 |
Frequently asked questions
What is Dr. Joanne Mortimer's medical specialty?
Dr. Joanne Mortimer practices Medical Oncology Physician in Duarte, CA.
Where does Dr. Joanne Mortimer practice?
Dr. Joanne Mortimer practices at 1500 Duarte RD, Duarte, CA 910103012. Office phone: 6263598111.
What is Dr. Joanne Mortimer's NPI?
Dr. Joanne Mortimer's National Provider Identifier (NPI) is 1558319038, issued by NPPES.
Does Dr. Joanne Mortimer accept Medicare assignment?
Yes. Dr. Joanne Mortimer accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Joanne Mortimer 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); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.