Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. PATRICK DUNLEAVY FARRELL D.O.
NPI 1053765487
Emergency Medicine - Hospice and Palliative Medicine in Frederick, MD

Active since April 22, 2016PECOS Enrolled
501 W 7TH ST, FREDERICK, MD 21701(240) 215-6310(240) 566-4973 Get Directions Write a Review

NPPES record last updated: October 29, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Oct 29, 2026, Aug 6, 2019, Aug 5, 2018 (3 updates tracked since 2018).

About Dr. Patrick Dunleavy Farrell D.o. NPPES

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

DR. PATRICK DUNLEAVY FARRELL D.O. (NPI 1053765487) is an individual hospice and palliative medicine provider in Frederick, Maryland, licensed in Maryland (H0098041) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1053765487
Entity TypeIndividualMale
Primary Taxonomy207PH0002X
Provider Legal NameDR. PATRICK DUNLEAVY FARRELLCredential: D.O.
Location Address501 W 7TH STFrederick, MD 21701-4586
Mailing Address1 Frederick Health WayFrederick, MD 21701-9435 · (240) 215-6310 · Fax (240) 566-4973
Fax(240) 566-4973
Sole ProprietorNo
Enumeration DateApril 22, 2016
Last NPPES UpdateOctober 29, 20263 updates tracked since enumeration
NPPES CertifiedOctober 29, 2026
✔ NPI 1053765487 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency Medicine · Hospice and Palliative MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207PH0002X
License✔ Licensed in MD · H0098041
Definition
An emergency medicine physician with special knowledge and skills to prevent and relieve the suffering experienced by patients with life-limiting illnesses. This specialist works with an interdisciplinary hospice or palliative care team to maximize quality of life while addressing physical, psychological, social and spiritual needs of both patient and family throughout the course of the disease, through the dying process, and beyond for the family. This specialist has expertise in the assessment of patients with advanced disease; the relief of distressing symptoms; the coordination of interdisciplinary patient and family-centered care in diverse venues; the use of specialized care systems including hospice; the management of the imminently dying patient; and legal and ethical decision making in end-of-life care.
Also ListedFamily MedicineTaxonomy 207Q00000X · License H0098041 (MD)
501 W 7TH ST, Frederick, MD 21701

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Patrick Dunleavy Farrell D.o. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignments

3

Medicare enrollment records show Patrick Farrell reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Community Health
501 W 7TH ST
Frederick, MD 21701
  • Reassigned Medicare billing, Maryland enrollment
  • 245 clinicians in this Medicare group
Internal Medicine
950 N GLEBE RD, SUITE 4000
Arlington, VA 22203
  • Reassigned Medicare billing, Maryland enrollment
  • 339 clinicians in this Medicare group
Internal Medicine
950 N GLEBE RD STE 700
Arlington, VA 22203
  • Reassigned Medicare billing, Maryland enrollment
  • 668 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 12

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 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.
297 services162 patients
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.
166 services126 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
113 services113 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
64 services63 patients
Influenza vaccine split virus, preservative free 90662
The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.
62 services61 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
19 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21701 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
$89.75 typical visit price
range $57.99 – $175.57
Typical copayment $22.43 (range $14.49 – $43.89)
Most-billed visit code 99203
Established Patient
$102.11 typical visit price
range $18.66 – $143.02
Typical copayment $25.52 (range $4.66 – $35.75)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

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

Health Educator
501 W 7TH ST
FREDERICK, MD 21701
Nurse Practitioner
501 W 7TH ST
FREDERICK, MD 21701
Physician Assistant
501 W 7TH ST
FREDERICK, MD 21701
Health Educator
501 W 7TH ST
FREDERICK, MD 21701
Orthopaedic Surgery
501 W 7TH ST
FREDERICK, MD 21701
Clinic/Center (Radiology)
501 W 7TH ST
FREDERICK, MD 21701
Nurse Practitioner (Family)
501 W 7TH ST
FREDERICK, MD 21701
Pharmacist
501 W 7TH ST
FREDERICK, MD 21701

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Patrick Farrell's NPI number?

The NPI number for Patrick Farrell is 1053765487. It was assigned to this individual provider in the NPPES registry on April 22, 2016.

Where is Patrick Farrell located?

Patrick Farrell practices at 501 W 7th St, Frederick, MD 21701. The listed phone number is (240) 215-6310.

What is Patrick Farrell's specialty?

The primary specialty registered for this NPI is Emergency Medicine, specializing in Hospice and Palliative Medicine, with taxonomy code 207PH0002X.

Is Patrick Farrell enrolled in Medicare?

Yes. Patrick Farrell is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Patrick Farrell's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Patrick Farrell reassigns Medicare benefits to 3 organizations: Frederick Health Medical Group LLC (Frederick, MD), Privia Care Center LLC (Arlington, VA) and Privia Medical Group, LLC (Arlington, VA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Patrick Farrell's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Patrick Farrell was last updated on October 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.