DR. ERIN ELIZABETH FARRELLY M.D., M.S.
NPI 1922354422
Orthopaedic Surgery in San Marcos, CA

Q: What is Erin Farrelly's NPI number?

The NPI number for Erin Farrelly is 1922354422. It was assigned to this individual provider in the NPPES registry on August 2, 2012.

Q: What is Erin Farrelly's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Q: When was this NPI record last updated?

The NPPES record for Erin Farrelly was last updated on January 6, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since August 02, 2012PECOS EnrolledAccepts Medicare Assignment

83.64/100

CMS Quality Rating

277 RANCHEROS DR STE 101, SAN MARCOS, CA 92069(760) 750-1902(760) 750-1906 Get Directions Write a Review

NPPES record last updated: January 6, 2021. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Dr. Erin Elizabeth Farrelly M.d., M.s. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ERIN ELIZABETH FARRELLY M.D., M.S. (NPI 1922354422) is an individual orthopaedic surgery provider in San Marcos, California, licensed in California (A121731) and active in the NPI registry since August 2012. She is enrolled in Medicare PECOS, is affiliated with Medstar Franklin Square Medical Center, and is a graduate of George Washington University School Of Medicine (2007).

NPPES Registry Identity

NPI1922354422

Entity TypeIndividualFemale

Primary Taxonomy207X00000X

Provider Legal NameDR. ERIN ELIZABETH FARRELLYCredential: M.D., M.S.

Location Address277 RANCHEROS DR STE 101San Marcos, CA 92069-2976

Mailing Address277 Rancheros Dr Ste 101San Marcos, CA 92069-2976 · (760) 750-1902

Phone(760) 750-1902

Fax(760) 750-1906

Sole ProprietorNo

Medical School CMSGeorge Washington University School Of MedicineGraduated 2007

Enumeration DateAugust 2, 2012

Last NPPES UpdateJanuary 6, 2021

NPPES CertifiedJanuary 6, 2021

✔ NPI 1922354422 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code207X00000X

License✔ Licensed in CA · A121731

Definition

An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

Also ListedOrthopaedic Surgery · Orthopaedic TraumaTaxonomy 207XX0801X · License A121731 (CA)

277 RANCHEROS DR STE 101, San Marcos, CA 92069

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Erin Elizabeth Farrelly M.d., M.s. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4284888546

PECOS Enrollment IDI20240620003877, I20251210001998

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 10

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

84 services56 patients

X-ray of knee, 1-2 views 73560

An X-ray of the knee with 1-2 views is a quick, painless test that produces images of the knee bones. It helps identify fractures, infections, or changes in the knee joint. During the procedure, you'll be asked to stay still while the X-ray machine captures the images.

48 services21 patients

X-ray of hip, 2-3 views 73502

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

38 services27 patients

X-ray of thigh bone, minimum 2 views 73552

An X-ray of the thigh bone is a non-invasive imaging test. It involves passing a small amount of radiation through the thigh to produce images of the bone structure. At least two different angles are captured for a comprehensive view. This helps detect fractures, infections, or other abnormalities.

28 services17 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

28 services28 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

25 services21 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Medstar Franklin Square Medical Center

Acute Care Hospitals · Rosedale, MD

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210015

Location9000 Franklin Square DriveRosedale, MD 21237 · Baltimore County

Emergency services Birthing friendly

Medstar Union Memorial Hospital

Acute Care Hospitals · Baltimore, MD

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number210024

Location201 East University ParkwayBaltimore, MD 21218 · Baltimore City County

Emergency services

Medstar Good Samaritan Hospital

Acute Care Hospitals · Baltimore, MD

3/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number210056

Location5601 Loch Raven BoulevardBaltimore, MD 21239 · Baltimore City County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92069 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$94.87 typical visit price

range $62.10 – $184.71

Typical copayment $23.71 (range $15.52 – $46.17)

Most-billed visit code 99203

Established Patient

$76.87 typical visit price

range $20.62 – $151.42

Typical copayment $19.21 (range $5.15 – $37.85)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

83.64/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

94.96

Improvement Activities

Cost

54.73

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Other Providers at the Same Location NPPES 8

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

HANNAH KIRBY MD INC

Orthopaedic Surgery