Active NPI 1154366391 Individual Practitioner Female Practitioner

Margaret Evelyn Duffy , PA-C

Physician Assistant • Seattle, WA

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Margaret Duffy, PA-C is a certified Physician Assistant practicing in Seattle, WA. With approximately 28 years of clinical experience since completing medical education in 1998, Margaret Duffy delivers high-quality medical care to the local community at 904 7TH AVE.

Margaret Duffy is affiliated with The Polyclinic Pllc and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include established patient outpatient office visit, new patient outpatient office visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

904 7th Ave

Seattle, WA 981041132

Telephone 2068604545

Fax 2068602369

Associated Practice Facility / Clinic

🏢 Kelley-Ross & Assoc Inc Facility NPI 1669517025

Medicare Profile & Education

Medical School

Other

Graduation Year

1998

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Physician Assistant in Seattle, WA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

28 Yrs +17.7 yrs vs City Avg

City Avg: 10.3 Yrs

State Avg: 12.1 Yrs

Regional Practice Density

833 Specialists

Practicing in Seattle, WA (3774 Statewide)

Telehealth Adoption Rate

18.8% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

65.2% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Duffy (28 Years) 28 Yrs

Seattle Specialty Average (10.3 Years) 10.3 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	313	272	$243.11	$84.86
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	74	40	$477.27	$167.70
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	47	45	$152.53	$51.68
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	36	33	$343.92	$119.70

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	362	287	$212.00	$83.93
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	76	71	$127.00	$53.56
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	41	32	$419.00	$166.18
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	33	30	$313.00	$119.20
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	15	15	$482.00	$154.48

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	176	154	$212.00	$84.55
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	82	48	$419.00	$166.55
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	42	37	$313.00	$117.69
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	28	28	$482.00	$155.66
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	24	23	$127.00	$52.62

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	144	125	$212.00	$86.34
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	138	69	$419.00	$170.20
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	42	33	$313.00	$122.42
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	24	24	$482.00	$157.43
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	17	16	$127.00	$53.82

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	158	138	$212.00	$70.79
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	89	42	$419.00	$137.83
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	25	19	$313.00	$103.23

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	256	200	$212.00	$68.05
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	91	51	$419.00	$134.95
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	23	20	$313.00	$101.16

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	160	141	$205.41	$65.91
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	149	71	$383.34	$133.13
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	19	16	$298.47	$98.96

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	131	109	$195.00	$66.35
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	113	51	$350.00	$131.22
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	18	14	$267.00	$97.74

Medical Specialties & State Licenses

CMS Verified: 2026-07-27

Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

State License WA PA10003777

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

8354243 (WA)

Hospital & Practice Group Affiliations

The Polyclinic Pllc

1145 Broadway, Seattle, WA 981224201

Phone: 2063291760

The Polyclinic Pllc

904 7th Ave, Seattle, WA 981041132

Phone: 2063091760

The Polyclinic Pllc

1145 Broadway, Seattle, WA 981224201

Phone: 2066823447

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

1 Associated Practitioners

Dr. Shanta Pillai , DO

Pediatrics - Sleep Medicine

NPI 1558821686

Doctor of Osteopathic Medicine (D.O.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

8 Historical Events

📍

Updated Business Mailing Address July 27, 2026

Registered at 7600 EVERGREEN WAY, EVERETT, WA 982036421 (Tel: 2068605414)

📍

Updated Practice Location August 11, 2022

Registered at 904 7TH AVE, SEATTLE, WA 981041132 (Tel: 2068604545)

✅

NPI Profile Active October 01, 2009

NPI status registered as active in NPPES database

📍

Updated Practice Location October 01, 2009

Registered at 3216 NE 45TH PL, SUITE 200, SEATTLE, WA 981054093 (Tel: 2065254000)

📍

Updated Business Mailing Address October 01, 2009

Registered at 1145 BROADWAY, SEATTLE, WA 981224201 (Tel: 2063291760)

👤

Provider Name / Credentials Updated October 01, 2009

Recorded as MARGARET DUFFY, P.A. - C

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) October 01, 2009

Physician Assistant (License #PA10003777 in WA)

🟢

Initial NPI Registration & Enumeration June 19, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1154366391

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: June 19, 2006

Last Update: July 27, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

7600 Evergreen Way

Everett, WA 982036421

Phone: 2068605414

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.