Active NPI 1215255526 Individual Practitioner Male Practitioner

Dr. William G. Tsiaras , MD, PhD

Dermatology • Boston, MA

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. William Tsiaras, MD, PhD is a certified Dermatology practicing in Boston, MA. With approximately 16 years of clinical experience since completing medical education in 2010, Dr. Tsiaras delivers high-quality medical care to the local community at 221 LONGWOOD AVE.

Dr. Tsiaras is affiliated with Brigham And Womens Physicians Organization Inc and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include destruction of precancer skin growth, 2-14 growths, established patient outpatient office visit, 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

221 Longwood Ave
Brigham Dermatology Associates

Boston, MA 021155804

Telephone 6177324918

Fax 6175826060

Associated Practice Facility / Clinic

🏢 Brigham And Womens Physicians Organization Inc Facility NPI 1083647648

Medicare Profile & Education

Medical School

Other

Graduation Year

2010

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Dermatology in Boston, MA

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

16 Yrs -0.4 yrs vs City Avg

City Avg: 16.4 Yrs

State Avg: 27.5 Yrs

Regional Practice Density

270 Specialists

Practicing in Boston, MA (648 Statewide)

Telehealth Adoption Rate

18.1% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

76.3% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Tsiaras (16 Years) 16 Yrs

Boston Specialty Average (16.4 Years) 16.4 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
17003 Destruction of precancer skin growth, 2-14 growths	391	73	$38.00	$2.13
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	375	95	$603.08	$152.11
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	352	247	$409.69	$101.30
17000 Destruction of skin growth	147	115	$243.07	$58.72
G2212 Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or	105	23	$129.75	$32.72
11042 Removal of skin and tissue, 20.0 sq cm or less	79	19	$255.51	$64.20
11102 Tangential biopsy of single skin lesion	26	23	$160.69	$29.67
17004 Destruction of precancer skin growth, 15 or more growths	23	11	$489.00	$106.83
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	17	17	$804.06	$193.31

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	342	92	$599.00	$150.30
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	327	226	$404.57	$103.78
17003 Destruction of precancer skin growth, 2-14 growths	303	67	$35.89	$2.19
17000 Destruction of skin growth	147	101	$236.99	$59.18
G2212 Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or	105	16	$128.11	$33.24
11042 Removal of skin and tissue, 20.0 sq cm or less	72	20	$250.06	$63.82
29581 Application of vein wound compression bandages on lower leg, ankle, and foot	35	11	$112.00	$28.40
11102 Tangential biopsy of single skin lesion	31	28	$156.90	$34.11
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	11	11	$801.00	$180.39

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	378	254	$397.63	$105.91
17003 Destruction of precancer skin growth, 2-14 growths	364	81	$35.00	$2.25
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	332	87	$586.08	$157.10
17000 Destruction of skin growth	165	116	$226.98	$59.22
G2212 Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or	87	22	$127.68	$34.50
11042 Removal of skin and tissue, 20.0 sq cm or less	77	20	$244.40	$63.92
29581 Application of vein wound compression bandages on lower leg, ankle, and foot	46	12	$117.65	$30.99
11102 Tangential biopsy of single skin lesion	34	34	$162.59	$34.37
99213 Established patient office or other outpatient visit, typically 15 minutes	23	21	$268.78	$70.89
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	22	22	$547.55	$146.36
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	12	12	$735.00	$198.35
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	11	11	$332.00	$90.27

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	406	250	$338.95	$108.62
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	402	111	$482.22	$159.95
17003 Destruction of precancer skin growth, 2-14 growths	220	62	$35.00	$2.30
17000 Destruction of skin growth	135	106	$228.27	$58.94
G2212 Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or	89	36	$133.11	$35.13
11042 Removal of skin and tissue, 20.0 sq cm or less	83	32	$253.12	$66.81
29581 Application of vein wound compression bandages on lower leg, ankle, and foot	43	18	$116.74	$35.19
11102 Tangential biopsy of single skin lesion	38	35	$163.00	$36.11
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	21	21	$698.57	$201.86
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	19	19	$318.68	$91.10
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	15	15	$530.60	$148.52
99213 Established patient office or other outpatient visit, typically 15 minutes	11	11	$219.73	$73.61

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	440	237	$316.77	$86.24
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	181	69	$447.12	$121.32
17003 Destruction of precancer skin growth, 2-14 growths	130	45	$33.38	$2.35
17000 Destruction of skin growth	96	80	$226.20	$60.14
99213 Established patient office or other outpatient visit, typically 15 minutes	54	42	$205.94	$56.19
11042 Removal of skin and tissue, 20.0 sq cm or less	39	22	$253.51	$66.62
29581 Application of vein wound compression bandages on lower leg, ankle, and foot	32	16	$113.81	$33.67
11102 Tangential biopsy of single skin lesion	31	31	$163.00	$35.32
99442 Telephone medical discussion with physician, 11-20 minutes	20	16	$204.00	$55.75
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	14	14	$305.86	$82.98
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	12	12	$680.67	$184.51

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	402	260	$311.39	$84.76
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	330	95	$439.11	$119.37
17003 Destruction of precancer skin growth, 2-14 growths	117	43	$33.00	$2.68
11042 Removal of skin and tissue, 20.0 sq cm or less	89	33	$249.67	$66.75
17000 Destruction of skin growth	87	72	$221.78	$59.83
99213 Established patient office or other outpatient visit, typically 15 minutes	54	44	$202.11	$54.97
29581 Application of vein wound compression bandages on lower leg, ankle, and foot	54	13	$114.44	$33.65
11102 Tangential biopsy of single skin lesion	40	33	$163.00	$37.89
17110 Destruction of up to 14 skin growths	21	16	$291.90	$76.08
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	21	21	$301.76	$82.15
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	19	19	$511.53	$138.72
11104 Punch biopsy, first skin growth	15	15	$205.00	$44.05

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	480	247	$303.68	$84.48
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	225	71	$428.88	$119.71
17003 Destruction of precancer skin growth, 2-14 growths	146	42	$31.63	$2.68
11042 Removal of skin and tissue, 20.0 sq cm or less	118	42	$243.90	$68.05
17000 Destruction of skin growth	102	71	$215.06	$57.92
99213 Established patient office or other outpatient visit, typically 15 minutes	80	67	$197.63	$55.34
11100 Biopsy of single growth of skin and/or tissue	56	52	$191.57	$49.47
11045 Removal of skin and tissue, each additional 20.0 sq cm or less	49	13	$100.92	$28.82
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	26	26	$305.38	$82.72
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	16	16	$517.25	$139.37
11900 Injection into skin growth, 1-7 growths	16	11	$123.50	$25.96

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	445	230	$294.64	$83.01
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	227	82	$418.44	$117.26
17003 Destruction of precancer skin growth, 2-14 growths	170	46	$31.00	$2.57
11042 Removal of skin and tissue, 20.0 sq cm or less	111	30	$236.07	$66.29
17000 Destruction of skin growth	104	82	$207.48	$57.17
99213 Established patient office or other outpatient visit, typically 15 minutes	96	74	$190.88	$53.70
29581 Application of vein wound compression bandages on lower leg, ankle, and foot	78	25	$115.00	$16.12
11100 Biopsy of single growth of skin and/or tissue	63	55	$185.43	$45.37
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	33	33	$286.45	$80.93
11101 Biopsy of each additional growth of skin and/or tissue	17	13	$118.00	$26.96
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	14	14	$487.71	$136.82

Medical Specialties & State Licenses

Dermatology Primary Specialty

NUCC Taxonomy Code: 207N00000X

State License MA 259741

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.

Internal Medicine

NUCC Taxonomy Code: 207R00000X

State License RI LP01895

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Dermatology

NUCC Taxonomy Code: 207N00000X

State License MA 247360

Hospital & Practice Group Affiliations

Brigham And Womens Physicians Organization Inc

221 Longwood Ave, Boston, MA 021155804

Phone: 6177325500

Practice Associates & Co-Workers

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

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Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active March 19, 2015

NPI status registered as active in NPPES database

📍

Updated Practice Location March 19, 2015

Registered at 221 LONGWOOD AVE, BRIGHAM DERMATOLOGY ASSOCIATES, BOSTON, MA 021155804 (Tel: 6177324918)

📍

Updated Business Mailing Address March 19, 2015

Registered at 221 LONGWOOD AVE, BRIGHAM DERMATOLOGY ASSOCIATES, BOSTON, MA 021155804 (Tel: 6177324918)

👤

Provider Name / Credentials Updated March 19, 2015

Recorded as WILLIAM TSIARAS, M.D., PH.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) March 19, 2015

Dermatology (License #259741 in MA)

🟢

Initial NPI Registration & Enumeration May 11, 2010

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: 1215255526

Entity Type:

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

Enumeration Date: May 11, 2010

Last Update: March 19, 2015

Sole Proprietor: No

Update or Correct Profile

Mailing Address

221 Longwood Ave, Brigham Dermatology Associates

Boston, MA 021155804

Phone: 6177324918

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.