Active NPI 1518321074 Individual Practitioner Female Practitioner

Dr. Joan Leavens , MD

Dermatology • Seattle, WA

Professional Overview & Biography Verified Profile Summary

Dr. Joan Leavens, MD is a certified Dermatology practicing in Seattle, WA. With approximately 10 years of clinical experience since graduating from University Of Michigan Medical School in 2016, Dr. Leavens delivers high-quality medical care to the local community at 1021 MERCER ST.

Dr. Leavens does not directly accept Medicare assignment.

Frequently performed procedures and clinical services include pathology examination of tissue using a microscope, intermediate complexity, destruction of precancer skin growth, 2-14 growths, destruction of skin growth. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

1021 Mercer St

Seattle, WA 981094324

Telephone 2064892530

Fax 2064892531

Associated Practice Facility / Clinic

🏢 Modern Dermatology, Pllc Facility NPI 1790178010

Medicare Profile & Education

Medical School

University Of Michigan Medical School

Graduation Year

2016

Medicare Assignment

Not Specified

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Dermatology in Seattle, WA

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

10 Yrs -9.7 yrs vs City Avg

City Avg: 19.7 Yrs

State Avg: 19.7 Yrs

Regional Practice Density

126 Specialists

Practicing in Seattle, WA (397 Statewide)

Telehealth Adoption Rate

27.8% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

72.8% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Leavens (10 Years) 10 Yrs

Seattle Specialty Average (19.7 Years) 19.7 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
88305 Pathology examination of tissue using a microscope, intermediate complexity	851	461	$232.00	$44.18
17003 Destruction of precancer skin growth, 2-14 growths	267	66	$20.00	$7.74
17000 Destruction of skin growth	148	102	$220.00	$54.22
99213 Established patient office or other outpatient visit, typically 15 minutes	96	73	$246.00	$100.41
17110 Destruction of up to 14 skin growths	89	65	$377.00	$129.75
11102 Tangential biopsy of single skin lesion	79	65	$338.00	$93.01
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	70	54	$358.00	$141.04
11103 Biopsy of related skin growth, each additional growth	56	33	$182.00	$57.44
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	38	38	$357.00	$119.97
88304 Pathology examination of tissue using a microscope, moderately low complexity	31	27	$138.00	$17.94
88342 Special stained specimen slides to examine tissue, initial procedure	26	25	$364.00	$36.13
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	25	25	$538.00	$182.34
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm	25	18	$1031.00	$346.24
11602 Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm	23	18	$839.00	$138.98
88312 Special stained specimen slides to identify organisms including interpretation and report	22	17	$345.00	$27.42
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	17	15	$152.00	$62.97

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity	763	420	$232.00	$39.11
17003 Destruction of precancer skin growth, 2-14 growths	162	41	$20.00	$7.82
17000 Destruction of skin growth	113	70	$220.00	$49.90
17110 Destruction of up to 14 skin growths	106	74	$377.00	$131.92
99213 Established patient office or other outpatient visit, typically 15 minutes	96	66	$246.00	$99.38
11102 Tangential biopsy of single skin lesion	89	69	$338.00	$92.92
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	72	42	$358.00	$140.23
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	56	56	$357.00	$123.02
11103 Biopsy of related skin growth, each additional growth	37	26	$182.00	$58.12
88304 Pathology examination of tissue using a microscope, moderately low complexity	29	29	$138.00	$11.93
88342 Special stained specimen slides to examine tissue, initial procedure	27	26	$364.00	$35.45
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	24	24	$538.00	$181.54
88312 Special stained specimen slides to identify organisms including interpretation and report	24	16	$345.00	$27.86
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm	15	14	$1031.00	$349.80
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	11	11	$152.00	$62.91

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity	620	405	$146.58	$63.23
17003 Destruction of precancer skin growth, 2-14 growths	197	58	$11.72	$7.59
99213 Established patient office or other outpatient visit, typically 15 minutes	115	112	$146.20	$96.11
17110 Destruction of up to 14 skin growths	86	83	$219.94	$125.23
17000 Destruction of skin growth	84	83	$136.43	$51.43
11102 Tangential biopsy of single skin lesion	72	69	$203.94	$93.33
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	64	62	$210.83	$135.18
11103 Biopsy of related skin growth, each additional growth	49	28	$112.08	$55.82
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	39	39	$241.10	$118.72
88341 Special stained specimen slides to examine tissue	27	12	$146.41	$28.12
88342 Special stained specimen slides to examine tissue, initial procedure	21	20	$188.67	$34.00
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	17	17	$371.59	$179.56
88312 Special stained specimen slides to identify organisms including interpretation and report	14	11	$199.64	$96.74
88304 Pathology examination of tissue using a microscope, moderately low complexity	13	13	$105.23	$26.06
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	11	11	$72.91	$61.90

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity	530	364	$121.67	$71.29
17003 Destruction of precancer skin growth, 2-14 growths	90	25	$8.00	$6.70
99213 Established patient office or other outpatient visit, typically 15 minutes	62	57	$113.00	$92.18
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	39	39	$168.00	$113.15
17110 Destruction of up to 14 skin growths	38	38	$175.00	$113.83
17000 Destruction of skin growth	34	32	$103.00	$45.68
11102 Tangential biopsy of single skin lesion	33	33	$154.00	$99.00
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	27	26	$167.00	$130.78
88312 Special stained specimen slides to identify organisms including interpretation and report	18	13	$152.00	$94.78
88304 Pathology examination of tissue using a microscope, moderately low complexity	14	14	$73.24	$42.52
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	13	13	$256.00	$168.87
88342 Special stained specimen slides to examine tissue, initial procedure	11	11	$171.00	$48.34

Medical Specialties & State Licenses

CMS Verified: 2026-04-10

Dermatology Primary Specialty

NUCC Taxonomy Code: 207N00000X

State License WA MD61174242

A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.

Dermatology - Dermatopathology

NUCC Taxonomy Code: 207ND0900X

State License WA MD61174242

A dermatopathologist has the expertise to diagnose and monitor diseases of the skin including infectious, immunologic, degenerative and neoplastic diseases. This entails the examination and interpretation of specially prepared tissue sections, cellular scrapings and smears of skin lesions by means of routine and special (electron and fluorescent) microscopes.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

2189327 (WA)

Secondary Practice Locations

3249 Oak Park Ave

Berwyn, IL 604023429

Phone: 7087833403

1703 S Meridian Ste 101

Puyallup, WA 983717590

Phone: 2538483000

5225 Cirque Dr W Ste 200

University Place, WA 984673639

Phone: 2538483000

125 16th Ave E

Seattle, WA 981125211

Phone: 2063263000

Practice Associates & Co-Workers

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

4 Associated Practitioners

Dr. Richard Grabowski , MD

Dermatology

NPI 1194720680

Doctor of Medicine (M.D.)

Dr. Heather Rogers , MD

Dermatology

NPI 1376717363

Doctor of Medicine (M.D.)

Dr. James Collyer , MD

Dermatology

NPI 1396907960

Doctor of Medicine (M.D.)

Dr. Robin Green Whipple , MD

Dermatology

NPI 1730185083

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

14 Historical Events

📍

Updated Practice Location April 10, 2026

Registered at 1021 MERCER ST, SEATTLE, WA 981094324 (Tel: 2064892530)

📍

Updated Business Mailing Address April 10, 2026

Registered at 4600 92ND AVE SE, MERCER ISLAND, WA 980404442 (Tel: 2065504683)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) April 10, 2026

Dermatology (License #MD61174242 in WA)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) February 18, 2026

Dermatology (License #MD61174242 in WA)

📍

Updated Practice Location February 16, 2024

Registered at 125 16TH AVE E, SEATTLE, WA 981125211 (Tel: 2063263000)

📍

Updated Practice Location March 21, 2022

Registered at 1703 S MERIDIAN STE 101, PUYALLUP, WA 983717590 (Tel: 2538483000)

📍

Updated Business Mailing Address March 21, 2022

Registered at 1703 S MERIDIAN STE 101, PUYALLUP, WA 983717590 (Tel: 2538483000)

👤

Provider Name / Credentials Updated March 21, 2022

Recorded as JOAN LEAVENS, MD

✅

NPI Profile Active April 11, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location April 11, 2016

Registered at 3249 OAK PARK AVE, BERWYN, IL 604023429 (Tel: 7087833403)

📍

Updated Business Mailing Address April 11, 2016

Registered at 3249 OAK PARK AVE, BERWYN, IL 604023429

👤

Provider Name / Credentials Updated April 11, 2016

Recorded as JOAN LEAVENS

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) April 11, 2016

Student in an Organized Health Care Education/Training Program

🟢

Initial NPI Registration & Enumeration April 11, 2016

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

0 Reviews

No patient reviews submitted yet for Dr. Joan Leavens. Be the first to share your experience!

Only verified registered users can submit ratings, post feedback, and upload facility photos.

NPI Administrative Meta

NPI Number: 1518321074

Entity Type:

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

Enumeration Date: April 11, 2016

Last Update: April 10, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

4600 92nd Ave Se

Mercer Island, WA 980404442

Phone: 2065504683

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.