Active NPI 1518947068 Individual Practitioner Male Practitioner

Dr. Mark Stewart Amster , MD

Dermatology • Brighton, MA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Mark Amster, MD is a certified Dermatology practicing in Brighton, MA. With approximately 39 years of clinical experience since graduating from State University Of New York Downstate Medical Center in 1987, Dr. Amster delivers high-quality medical care to the local community at 280 WASHINGTON ST.

Dr. Amster maintains professional affiliations with Newton Watertown Dermatology Assoc. Pc, Mark Amster Derm and accepts Medicare assignment.

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

280 Washington St
Suite 212

Brighton, MA 021353511

Telephone 6177837100

Associated Practice Facility / Clinic

🏢 Leonid Kotkin, M.d., P.c. Facility NPI 1922112762

Medicare Profile & Education

Medical School

State University Of New York Downstate Medical Center

Graduation Year

1987

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Dermatology in Brighton, MA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

39 Yrs -0.5 yrs vs City Avg

City Avg: 39.5 Yrs

State Avg: 27.5 Yrs

Regional Practice Density

2 Specialists

Practicing in Brighton, MA (648 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

69.9% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Amster (39 Years) 39 Yrs

Brighton Specialty Average (39.5 Years) 39.5 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	2,648	441	$31.24	$7.25
99213 Established patient office or other outpatient visit, typically 15 minutes	1,100	809	$248.54	$95.48
17000 Destruction of skin growth	810	550	$195.16	$59.09
11102 Tangential biopsy of single skin lesion	372	317	$300.98	$101.97
11301 Shaving of skin growth of body, arms, or legs, 0.6-1.0 cm	108	96	$405.58	$122.99
11103 Biopsy of related skin growth, each additional growth	91	60	$146.29	$54.64
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	63	49	$497.90	$183.22
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	59	55	$188.29	$60.42
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	36	36	$349.38	$116.34
17110 Destruction of up to 14 skin growths	33	31	$344.83	$115.76
17311 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks	30	26	$1974.00	$661.40
17004 Destruction of precancer skin growth, 15 or more growths	28	23	$473.86	$180.83
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	26	23	$506.43	$200.62
11302 Shaving of skin growth of body, arms, or legs, 1.1-2.0 cm	22	22	$450.41	$149.06
13132 Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm	16	13	$1398.00	$239.53
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	15	11	$6.41	$0.95
69100 Biopsy of ear	14	14	$408.67	$83.96
17261 Destruction of cancer skin growth of trunk, arms, or legs, 0.6-1.0 cm	12	12	$405.83	$113.13
11900 Injection into skin growth, 1-7 growths	11	11	$250.54	$39.46

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	3,212	536	$38.00	$7.32
99213 Established patient office or other outpatient visit, typically 15 minutes	1,282	984	$250.00	$95.14
17000 Destruction of skin growth	952	684	$200.00	$57.92
11102 Tangential biopsy of single skin lesion	613	511	$310.38	$103.55
11301 Shaving of skin growth of body, arms, or legs, 0.6-1.0 cm	199	144	$425.00	$118.98
11103 Biopsy of related skin growth, each additional growth	190	141	$150.00	$54.65
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	131	131	$350.38	$116.76
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	120	112	$206.25	$60.24
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	96	84	$500.00	$189.06
17004 Destruction of precancer skin growth, 15 or more growths	65	56	$475.00	$183.94
17261 Destruction of cancer skin growth of trunk, arms, or legs, 0.6-1.0 cm	40	36	$400.00	$126.08
17110 Destruction of up to 14 skin growths	39	35	$315.38	$113.40
11302 Shaving of skin growth of body, arms, or legs, 1.1-2.0 cm	26	25	$457.69	$145.41
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	25	24	$500.00	$203.15
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	24	12	$10.00	$1.05
99202 New patient office or other outpatient visit, typically 20 minutes	19	19	$300.00	$76.61
11900 Injection into skin growth, 1-7 growths	14	12	$325.00	$49.38
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	12	12	$362.50	$134.69

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	2,192	367	$38.00	$7.63
99213 Established patient office or other outpatient visit, typically 15 minutes	980	716	$250.00	$97.96
17000 Destruction of skin growth	679	465	$200.00	$58.90
11102 Tangential biopsy of single skin lesion	528	442	$301.02	$111.81
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	138	129	$204.35	$60.84
11103 Biopsy of related skin growth, each additional growth	119	86	$150.00	$57.62
11301 Shaving of skin growth of body, arms, or legs, 0.6-1.0 cm	90	73	$425.00	$135.83
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	72	59	$500.00	$188.00
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	56	56	$350.00	$117.99
99202 New patient office or other outpatient visit, typically 20 minutes	36	36	$300.00	$78.51
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	30	30	$500.00	$210.46
17261 Destruction of cancer skin growth of trunk, arms, or legs, 0.6-1.0 cm	27	27	$400.00	$138.66
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	22	19	$344.32	$135.02
17004 Destruction of precancer skin growth, 15 or more growths	17	13	$475.00	$188.77
17110 Destruction of up to 14 skin growths	17	15	$314.71	$112.45

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	2,159	390	$37.91	$7.40
99213 Established patient office or other outpatient visit, typically 15 minutes	968	697	$250.00	$99.28
17000 Destruction of skin growth	754	508	$200.00	$58.89
11102 Tangential biopsy of single skin lesion	545	442	$300.00	$114.39
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	158	148	$158.54	$62.01
11103 Biopsy of related skin growth, each additional growth	128	96	$150.00	$59.38
11301 Shaving of skin growth of body, arms, or legs, 0.6-1.0 cm	83	71	$425.00	$134.05
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	70	64	$500.00	$195.87
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	43	43	$350.00	$121.67
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	30	26	$337.50	$138.44
99202 New patient office or other outpatient visit, typically 20 minutes	28	28	$300.00	$79.98
17261 Destruction of cancer skin growth of trunk, arms, or legs, 0.6-1.0 cm	26	21	$400.00	$130.20
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	19	19	$500.00	$212.21
17004 Destruction of precancer skin growth, 15 or more growths	17	13	$457.35	$188.34
17110 Destruction of up to 14 skin growths	11	11	$327.27	$124.88

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	2,020	368	$38.00	$6.80
17000 Destruction of skin growth	667	489	$200.00	$58.09
99213 Established patient office or other outpatient visit, typically 15 minutes	580	479	$250.00	$81.65
11102 Tangential biopsy of single skin lesion	490	398	$300.00	$109.72
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	357	280	$150.00	$49.70
11103 Biopsy of related skin growth, each additional growth	164	108	$150.00	$59.86
11301 Shaving of skin growth of body, arms, or legs, 0.6-1.0 cm	63	48	$425.00	$130.68
99201 New patient office or other outpatient visit, typically 10 minutes	46	46	$150.00	$50.53
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	46	43	$500.00	$187.67
17261 Destruction of cancer skin growth of trunk, arms, or legs, 0.6-1.0 cm	34	27	$400.00	$131.60
17004 Destruction of precancer skin growth, 15 or more growths	29	24	$425.00	$177.46
99202 New patient office or other outpatient visit, typically 20 minutes	25	25	$250.00	$80.55
17110 Destruction of up to 14 skin growths	15	15	$313.33	$121.02
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	12	12	$500.00	$208.50

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	2,219	452	$38.00	$6.19
17000 Destruction of skin growth	838	597	$200.00	$58.55
99213 Established patient office or other outpatient visit, typically 15 minutes	701	561	$250.00	$79.55
11102 Tangential biopsy of single skin lesion	614	507	$256.35	$105.14
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	386	311	$150.00	$49.02
11103 Biopsy of related skin growth, each additional growth	136	101	$120.41	$58.53
99202 New patient office or other outpatient visit, typically 20 minutes	86	86	$250.00	$80.63
99201 New patient office or other outpatient visit, typically 10 minutes	68	68	$150.00	$49.92
17110 Destruction of up to 14 skin growths	45	44	$306.67	$119.04
11301 Shaving of skin growth of body, arms, or legs, 0.6-1.0 cm	36	28	$414.58	$120.19
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	33	32	$485.30	$188.38
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	27	27	$200.00	$113.12
17261 Destruction of cancer skin growth of trunk, arms, or legs, 0.6-1.0 cm	20	14	$387.85	$136.24
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	16	16	$500.00	$194.34

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	3,282	558	$38.00	$5.56
17000 Destruction of skin growth	1,092	744	$200.00	$59.80
99213 Established patient office or other outpatient visit, typically 15 minutes	909	714	$250.00	$75.37
11100 Biopsy of single growth of skin and/or tissue	779	659	$350.00	$110.93
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	477	386	$150.00	$46.11
99202 New patient office or other outpatient visit, typically 20 minutes	191	191	$250.00	$76.97
11101 Biopsy of each additional growth of skin and/or tissue	175	130	$81.00	$34.06
99201 New patient office or other outpatient visit, typically 10 minutes	94	94	$150.00	$46.55
11301 Shaving of skin growth of body, arms, or legs, 0.6-1.0 cm	36	33	$305.56	$127.97
17110 Destruction of up to 14 skin growths	27	22	$309.26	$118.32
17261 Destruction of cancer skin growth of trunk, arms, or legs, 0.6-1.0 cm	22	20	$376.68	$147.79
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	16	16	$478.13	$184.66
69100 Biopsy of ear	16	15	$437.50	$98.09
17004 Destruction of precancer skin growth, 15 or more growths	15	14	$425.00	$149.82
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	13	12	$500.00	$192.33

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths	3,141	544	$38.00	$5.96
17000 Destruction of skin growth	1,054	708	$200.00	$58.97
99213 Established patient office or other outpatient visit, typically 15 minutes	921	722	$250.00	$75.97
11100 Biopsy of single growth of skin and/or tissue	808	660	$350.00	$108.79
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	456	372	$150.00	$45.90
11101 Biopsy of each additional growth of skin and/or tissue	220	160	$81.00	$34.05
88305 Pathology examination of tissue using a microscope, intermediate complexity	193	141	$89.00	$40.07
99201 New patient office or other outpatient visit, typically 10 minutes	82	82	$150.00	$46.21
99202 New patient office or other outpatient visit, typically 20 minutes	59	59	$250.00	$78.05
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm	37	34	$477.16	$172.98
17261 Destruction of cancer skin growth of trunk, arms, or legs, 0.6-1.0 cm	31	31	$379.10	$145.01
11301 Shaving of skin growth of body, arms, or legs, 0.6-1.0 cm	25	21	$300.00	$128.07
17272 Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm	24	24	$408.33	$191.95
88312 Special stained specimen slides to identify organisms including interpretation and report	21	15	$58.00	$28.71

Medical Specialties & State Licenses

Dermatology Primary Specialty

NUCC Taxonomy Code: 207N00000X

State License MA 70448

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.

Hospital & Practice Group Affiliations

Newton Watertown Dermatology Assoc. Pc

280 Washington St, Brighton, MA 021353511

Phone: 6177837100

Mark Amster Derm

280 Washington St, Brighton, MA 021353511

Phone: 6177627100

Practice Associates & Co-Workers

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

2 Associated Practitioners

Dr. Robert Brown , MD

Dermatology

NPI 1104995133

Doctor of Medicine (M.D.)

Jacqueline Flaherty , PA-C

Physician Assistant

NPI 1316622640

Physician Assistant (Certified)

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location July 08, 2007

Registered at 280 WASHINGTON ST, SUITE 212, BRIGHTON, MA 021353511 (Tel: 6177837100)

📍

Updated Business Mailing Address July 08, 2007

Registered at 18 WHISPERING LN, NATICK, MA 017605883 (Tel: 5086552072)

👤

Provider Name / Credentials Updated July 08, 2007

Recorded as MARK AMSTER, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Dermatology (License #70448 in MA)

🟢

Initial NPI Registration & Enumeration January 19, 2006

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. Mark Amster. 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: 1518947068

Entity Type:

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

Enumeration Date: January 19, 2006

Last Update: July 13, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

18 Whispering Ln

Natick, MA 017605883

Phone: 5086552072

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.