Doctor profile · Federal record
Dr. Olivia Marshall, PA
Physician Assistant · Physician Assistant · Student in an Organized Health Care Education/Training Program · Colton, CA
- NPI 1639522766
- 10 yrs on file
- Licensed in 2 states
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
900 E Washington St Ste 200
Colton, CA 923244192
(909) 882-5867
fax (909) 503-1913 - Additional location
-
3811 E Bell RD Ste 107
Phoenix, AZ 850322158
(602) 482-6100 - Additional location
-
6950 E Chauncey Ln
Phoenix, AZ 850545178
(623) 873-8565
fax (480) 372-2110 - Mailing address
-
399 E 21St St
San Bernardino, CA 924044815
Credentials & registration
- NPI registered
- July 2016 — 10 yrs on file
- Profile last updated
- April 22, 2019
- Specialty taxonomy
- 363A00000X — NUCC code
- State licenses (2)
- Arizona #6570 · California #55316
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1639522766. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
200
Distinct HCPCS
2
Medicare allowed
$18,425
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 159 | 57 | $100 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 41 | 16 | $62 |
In context: peer comparison
Among 33 peers in this city , average services per provider: 58. This provider delivers 3.4× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
313
Patients
95
Total drug cost
$283,834
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ozempic (Semaglutide) | Brand | 183 | 56 | $233,007 |
| Mounjaro (Tirzepatide) | Brand | 39 | 0 | $49,783 |
| Topiramate | Generic | 32 | 14 | $352 |
| Metformin Hcl Er (Metformin Hcl) | Brand | 30 | 14 | $341 |
| Ondansetron Odt (Ondansetron) | Brand | 29 | 11 | $350 |
Frequently asked questions
What is Dr. Olivia Marshall's medical specialty?
Dr. Olivia Marshall practices Physician Assistant in Colton, CA.
Where does Dr. Olivia Marshall practice?
Dr. Olivia Marshall practices at 900 E Washington St Ste 200, Colton, CA 923244192. Office phone: 9098825867.
What is Dr. Olivia Marshall's NPI?
Dr. Olivia Marshall's National Provider Identifier (NPI) is 1639522766, issued by NPPES.
What procedures does Dr. Olivia Marshall 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 99213). Source: CMS Medicare Physician & Other Practitioners file.