Doctor profile · Federal record
Dr. Margaret Shannon, M.D.
Dermatology Physician (CMS: Dermatology) · Costa Mesa, CA
- NPI 1265449441
- Accepts Medicare
- MIPS 0.0 / 100 · 2023
- 47 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
275 Victoria St, Suite 1H
Costa Mesa, CA 926271906
(949) 646-2311
fax (949) 646-1064
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- August 5, 2010
- Year of graduation
- 1979 — 47 yrs since
- Specialty taxonomy
- 207N00000X — NUCC code
- State license (1)
- California #G42251
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1265449441. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
7,217
Distinct HCPCS
10
Medicare allowed
$451,932
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
17003 |
Destruction of precancer skin growth, 2-14 growths | 3,629 | 373 | $8 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 1,196 | 562 | $98 | |
17000 |
Destruction of precancer skin growth, 1 growth | 736 | 428 | $65 | |
88305 |
Pathology examination of tissue using a microscope, intermediate complexity | 609 | 323 | $39 | |
11102 |
Biopsy of related skin growth, first growth | 408 | 308 | $116 | |
11103 |
Biopsy of related skin growth, each additional growth | 139 | 112 | $57 | |
17311 |
Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks | 114 | 86 | $721 | |
12032 |
Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm | 92 | 77 | $234 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 81 | 80 | $122 | |
17312 |
Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks | 66 | 50 | $467 |
In context: peer comparison
Among 1 peers in Costa Mesa Dermatology Physician, average services per provider: 400. This provider delivers 18× the peer median.Open Payments
Industry payments received
All-time total
$284
Transactions
12
Manufacturers
8
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Regeneron Healthcare Solutions, INC. | 2 | $58.72 | |
| Janssen Biotech, INC. | 2 | $53.69 | |
| Ucb, INC. | 1 | $45.27 | |
| Strata Skin Sciences, INC. | 3 | $36.87 | |
| Abbvie INC. | 1 | $25.01 | |
| Almirall LLC | 1 | $24.90 | |
| Genzyme Corporation | 1 | $24.88 | |
| Biofrontera INC. | 1 | $14.68 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
397
Patients
248
Total drug cost
$99,800
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Triamcinolone Acetonide | Generic | 78 | 58 | $695 |
| Mupirocin | Generic | 76 | 55 | $734 |
| Clobetasol Propionate | Generic | 45 | 27 | $2,988 |
| Cephalexin | Generic | 41 | 36 | $511 |
| Hydrocortisone | Generic | 38 | 23 | $258 |
| Ketoconazole | Generic | 26 | 15 | $445 |
| Fluorouracil | Generic | 22 | 20 | $5,915 |
| Valacyclovir (Valacyclovir Hcl) | Brand | 20 | 14 | $1,389 |
| Metronidazole | Generic | 16 | 0 | $1,522 |
| Cosentyx Sensoready (2 Pens) (Secukinumab) | Brand | 12 | 0 | $84,770 |
Frequently asked questions
What is Dr. Margaret Shannon's medical specialty?
Dr. Margaret Shannon practices Dermatology Physician in Costa Mesa, CA.
Where does Dr. Margaret Shannon practice?
Dr. Margaret Shannon practices at 275 Victoria St, Costa Mesa, CA 926271906. Office phone: 9496462311.
What is Dr. Margaret Shannon's NPI?
Dr. Margaret Shannon's National Provider Identifier (NPI) is 1265449441, issued by NPPES.
Does Dr. Margaret Shannon accept Medicare assignment?
Yes. Dr. Margaret Shannon accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Margaret Shannon commonly perform?
Top Medicare-reported procedures in 2023: Destruction of precancer skin growth, 2-14 growths (HCPCS 17003); Established patient office or other outpatient visit (HCPCS 99213); Destruction of precancer skin growth, 1 growth (HCPCS 17000). Source: CMS Medicare Physician & Other Practitioners file.