Doctor profile · Federal record
Dr. Erin Farrelly, M.D., M.S.
Orthopaedic Surgery Physician (CMS: Orthopedic Surgery) · Orthopaedic Trauma Physician · San Marcos, CA
- NPI 1922354422
- Accepts Medicare
- MIPS 83.6 / 100 · 2023
- 19 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
277 Rancheros Dr Ste 101
San Marcos, CA 920692976
(760) 750-1902
fax (760) 750-1906
Credentials & registration
- NPI registered
- August 2012 — 14 yrs on file
- Profile last updated
- January 6, 2021
- Year of graduation
- 2007 — 19 yrs since
- Specialty taxonomy
- 207X00000X — NUCC code
- State license (1)
- California #A121731
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1922354422. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
400
Distinct HCPCS
10
Medicare allowed
$74,198
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 77 | 35 | $97 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 57 | 57 | $134 | |
76000 |
Imaging guidance for procedure, 60 minutes or less | 45 | 39 | $16 | |
73502 |
X-ray of hip, 2-3 views | 44 | 23 | $54 | |
73610 |
X-ray of ankle, minimum of 3 views | 34 | 11 | $42 | |
73560 |
X-ray of knee, 1-2 views | 31 | 14 | $39 | |
73552 |
X-ray of thigh bone, minimum 2 views | 26 | 11 | $41 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 25 | 24 | $61 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 24 | 22 | $179 | |
27236 |
Treatment of upper end of broken thigh bone with placement of stabilizing device or prosthetic replacement | 19 | 17 | $1,254 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 38. This provider delivers 11× the peer median.Open Payments
Industry payments received
All-time total
$1,212
Transactions
8
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Smith+Nephew, Inc. | 6 | $1,139.32 | |
| DePuy Synthes Sales Inc. | 1 | $58.53 | |
| Bioventus LLC | 1 | $14.25 |
By nature of payment
Hospital affiliations
Frequently asked questions
What is Dr. Erin Farrelly's medical specialty?
Dr. Erin Farrelly practices Orthopaedic Surgery Physician in San Marcos, CA.
Where does Dr. Erin Farrelly practice?
Dr. Erin Farrelly practices at 277 Rancheros Dr Ste 101, San Marcos, CA 920692976. Office phone: 7607501902.
What is Dr. Erin Farrelly's NPI?
Dr. Erin Farrelly's National Provider Identifier (NPI) is 1922354422, issued by NPPES.
Does Dr. Erin Farrelly accept Medicare assignment?
Yes. Dr. Erin Farrelly accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Erin Farrelly commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222); Imaging guidance for procedure (HCPCS 76000). Source: CMS Medicare Physician & Other Practitioners file.