Doctor profile · Federal record
Dr. Catherine Challender, MD, MPH
Internal Medicine Physician (CMS: Internal Medicine) · La Jolla, CA
- NPI 1336567866
- Accepts Medicare
- 12 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
9850 Genesee Ave Ste 900
La Jolla, CA 920371220
(858) 626-7780 - Additional location
-
9888 Genesee Ave
La Jolla, CA 920371205
Credentials & registration
- NPI registered
- April 2014 — 12 yrs on file
- Profile last updated
- November 22, 2021
- Year of graduation
- 2014 — 12 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A138525
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1336567866. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
783
Distinct HCPCS
4
Medicare allowed
$91,418
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 391 | 157 | $123 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 211 | 89 | $82 | |
99239 |
Hospital discharge day management, more than 30 minutes | 107 | 107 | $119 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 74 | 73 | $179 |
In context: peer comparison
Among 33 peers in La Jolla Internal Medicine Physician, average services per provider: 105. This provider delivers 7.5× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
29
Patients
0
Total drug cost
$2,380
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ampicillin Sodium | Generic | 15 | 0 | $2,342 |
| Amlodipine Besylate | Generic | 14 | 0 | $37 |
Hospital affiliations
Frequently asked questions
What is Dr. Catherine Challender's medical specialty?
Dr. Catherine Challender practices Internal Medicine Physician in La Jolla, CA.
Where does Dr. Catherine Challender practice?
Dr. Catherine Challender practices at 9850 Genesee Ave Ste 900, La Jolla, CA 920371220. Office phone: 8586267780.
What is Dr. Catherine Challender's NPI?
Dr. Catherine Challender's National Provider Identifier (NPI) is 1336567866, issued by NPPES.
Does Dr. Catherine Challender accept Medicare assignment?
Yes. Dr. Catherine Challender accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Catherine Challender 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); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.