Doctor profile · Federal record
Dr. Margaret Marshall, M.D.
Emergency Medicine Physician (CMS: Emergency Medicine) · Encinitas, CA
- NPI 1639170475
- Accepts Medicare
- 25 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
354 Santa Fe Dr
Encinitas, CA 920245142
(760) 230-2251 - Mailing address
-
Po Box 230760
Encinitas, CA 920230760
Credentials & registration
- NPI registered
- August 2005 — 21 yrs on file
- Profile last updated
- November 25, 2009
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- California #A87417
- Medicaid
- CA #00A874170
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1639170475. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,711
Distinct HCPCS
10
Medicare allowed
$59,537
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J0696 |
Injection, ceftriaxone sodium, per 250 mg | 412 | 80 | $1 | |
J2405 |
Injection, ondansetron hydrochloride, per 1 mg | 152 | 35 | $0 | |
93005 |
Routine electrocardiogram (ecg) using at least 12 leads with tracing | 136 | 133 | $7 | |
96374 |
Injection of drug or substance into vein | 108 | 104 | $42 | |
96361 |
Infusion into a vein for hydration, each additional hour | 107 | 79 | $14 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 102 | 102 | $136 | |
96375 |
Injection of additional new drug or substance into vein | 88 | 61 | $17 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 70 | 66 | $191 | |
81003 |
Automated urinalysis test | 68 | 68 | $2 | |
36415 |
Insertion of needle into vein for collection of blood sample | 62 | 61 | $8 |
In context: peer comparison
Among 12 peers in Encinitas Emergency Medicine Physician, average services per provider: 80. This provider delivers 21× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
185
Patients
171
Total drug cost
$1,776
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Cefuroxime (Cefuroxime Axetil) | Brand | 48 | 46 | $969 |
| Azithromycin | Generic | 32 | 32 | $108 |
| Cephalexin | Generic | 28 | 27 | $234 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 27 | 27 | $311 |
| Prednisone | Generic | 26 | 26 | $29 |
| Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) | Brand | 13 | 13 | $39 |
| Gabapentin | Generic | 11 | 0 | $86 |
Hospital affiliations
Frequently asked questions
What is Dr. Margaret Marshall's medical specialty?
Dr. Margaret Marshall practices Emergency Medicine Physician in Encinitas, CA.
Where does Dr. Margaret Marshall practice?
Dr. Margaret Marshall practices at 354 Santa Fe Dr, Encinitas, CA 920245142. Office phone: 7602302251.
What is Dr. Margaret Marshall's NPI?
Dr. Margaret Marshall's National Provider Identifier (NPI) is 1639170475, issued by NPPES.
Does Dr. Margaret Marshall accept Medicare assignment?
Yes. Dr. Margaret Marshall accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Margaret Marshall commonly perform?
Top Medicare-reported procedures in 2023: Injection, ceftriaxone sodium, per 250 mg (HCPCS J0696); Injection, ondansetron hydrochloride, per 1 mg (HCPCS J2405); Routine electrocardiogram (ecg) using at least 12 leads with tracing (HCPCS 93005). Source: CMS Medicare Physician & Other Practitioners file.