Dr. Bassel H Mahmoud , MD, PhD
Dermatology โข Worcester, MA
281 Lincoln St
Worcester, MA 016052138
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on June 17, 2009; this date does not establish years in practice.
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Published CMS data list 1,085 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 17311 โ Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks: 263 service units.
- 17312 โ Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks: 242 service units.
- 12032 โ Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm: 74 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 17 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 88 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Mupirocin โ 56 prescription fills, including refills.
- Doxycycline Hyclate โ 18 prescription fills, including refills.
- Cephalexin โ 14 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table ยท Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among clinicians listed under Dermatology in Worcester, MA (2024, 26 clinicians with data). Median for this group: 1,070. Middle half: 782 to 1,754.
Fewer Medicare Part B services than 60% of clinicians listed under Dermatology in Massachusetts (2024, 412 clinicians with data). Median for this group: 1,804. Middle half: 853 to 3,570.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 717 in 2020 to 1,085 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
281 Lincoln St
Worcester, MA 016052138
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Umass Memorial Medical Group Inc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
1996
What Public CMS Data Show
Dermatology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
390 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $248,281 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $193,585 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
88 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$482 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $142.21 in 2025
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2025.
Years since graduation
30 years (graduated 1996)
CMS Doctors and Clinicians data list 1996 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2009
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Mahmoud has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Mahmoud as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Worcester and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Dermatology in Worcester, MA (2024, 26 clinicians with data). Median for this group: 1,070. Middle half: 782 to 1,754.
Fewer Medicare Part B services than 60% of clinicians listed under Dermatology in Massachusetts (2024, 412 clinicians with data). Median for this group: 1,804. Middle half: 853 to 3,570.
Medicare-allowed amount
A higher Medicare-allowed amount than 80% of clinicians listed under Dermatology in Worcester, MA (2024, 26 clinicians with data). Median for this group: $76,395. Middle half: $35,688 to $156,768.
A higher Medicare-allowed amount than 70% of clinicians listed under Dermatology in Massachusetts (2024, 412 clinicians with data). Median for this group: $123,974. Middle half: $61,150 to $257,057.
Paid by Medicare
A higher Medicare payment amount than 80% of clinicians listed under Dermatology in Worcester, MA (2024, 26 clinicians with data). Median for this group: $55,623. Middle half: $25,935 to $118,154.
A higher Medicare payment amount than 75% of clinicians listed under Dermatology in Massachusetts (2024, 412 clinicians with data). Median for this group: $86,263. Middle half: $42,834 to $181,359.
Medicare Part D prescriptions
Fewer Part D prescriptions than 70% of clinicians listed under Dermatology in Worcester, MA (2024, 28 clinicians with data). Median for this group: 191. Middle half: 78 to 640.
Fewer Part D prescriptions than 80% of clinicians listed under Dermatology in Massachusetts (2024, 458 clinicians with data). Median for this group: 433. Middle half: 155 to 825.
Part D drug cost
A lower Part D drug cost than 85% of clinicians listed under Dermatology in Worcester, MA (2024, 28 clinicians with data). Median for this group: $84,535. Middle half: $2,257 to $397,041.
A lower Part D drug cost than 90% of clinicians listed under Dermatology in Massachusetts (2024, 458 clinicians with data). Median for this group: $90,594. Middle half: $5,876 to $363,288.
35 active clinicians are listed under Dermatology with a practice address in Worcester, MA (627 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Worcester
5.7% of these 35 clinicians have the CMS telehealth indicator.
77.1% of these 35 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 51% from 717 in 2020 to 1,085 in 2024.
- 2020: 717
- 2021: 873
- 2022: 788
- 2023: 927
- 2024: 1,085
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Medicare-allowed amount
Medicare-allowed amount increased 37% from $181,676 in 2020 to $248,281 in 2024.
- 2020: $181,676
- 2021: $208,377
- 2022: $184,300
- 2023: $214,603
- 2024: $248,281
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Paid by Medicare
Paid by Medicare increased 35% from $143,818 in 2020 to $193,585 in 2024.
- 2020: $143,818
- 2021: $164,985
- 2022: $146,365
- 2023: $168,064
- 2024: $193,585
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 83% from 48 in 2020 to 88 in 2024.
- 2020: 48
- 2021: 37
- 2022: 60
- 2023: 68
- 2024: 88
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30-day fills
30-day fills increased 83% from 48 in 2020 to 88 in 2024.
- 2020: 48
- 2021: 37
- 2022: 61
- 2023: 68
- 2024: 88
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Part D drug cost
Part D drug cost went from $489 in 2020 to $482 in 2024.
- 2020: $489
- 2021: $274
- 2022: $525
- 2023: $420
- 2024: $482
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $500.00 in 2023 to $142.21 in 2025.
- 2023: $500.00
- 2025: $142.21
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 โ December 31, 2025): fewer than 11 records totaling $142.21.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Avita Medical Americas, LLC |
Food and Beverage
Cash or cash equivalent
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Cohealyx | General | $142.21 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2017โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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17311
Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks
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263 | 224 | $2843.00 | $315.51 |
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17312
Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks
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242 | 158 | $1708.00 | $189.93 |
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12032
Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm
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74 | 67 | $1115.89 | $117.45 |
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13132
Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm
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73 | 72 | $1817.00 | $171.82 |
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17313
Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks
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65 | 53 | $2595.00 | $263.73 |
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13121
Complicated repair of wound of scalp, arms, or legs, 2.6-7.5 cm
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53 | 50 | $1488.30 | $138.08 |
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12052
Intermediate repair of wound of face, ears, eyelids, nose, lips, or mouth, 2.6-5.0 cm
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44 | 44 | $1084.36 | $104.17 |
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17311
Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks
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43 | 35 | $2843.00 | $311.59 |
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17312
Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks
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41 | 20 | $1708.00 | $190.24 |
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17314
Removal and microscopic exam of growth of trunk, arms, or legs, each additional stage, 1-5 tissue blocks
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40 | 28 | $1582.00 | $176.19 |
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13152
Complicated repair of wound of eyelids, nose, ears, or lip, 2.6-7.5 cm
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27 | 27 | $2033.00 | $175.37 |
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12042
Intermediate repair of wound of neck, hands, feet, or genitals, 2.6-7.5 cm
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26 | 26 | $1034.69 | $103.87 |
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15260
Full thickness skin graft to nose, ears, eyelids, or lips, 20.0 sq cm or less
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26 | 26 | $3470.08 | $866.69 |
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11603
Removal of cancer skin growth of body, arms, or legs, 2.1-3.0 cm
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24 | 23 | $1021.50 | $172.23 |
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12032
Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm
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18 | 16 | $1061.78 | $135.11 |
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13132
Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm
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14 | 13 | $1817.00 | $152.90 |
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13101
Complicated repair of wound of trunk, 2.6-7.5 cm
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12 | 12 | $1518.83 | $178.24 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Mupirocin | Mupirocin | 56 | 823 | $332.60 | 47 |
| Doxycycline Hyclate | Doxycycline Hyclate | 18 | 126 | $82.11 | 17 |
| Cephalexin | Cephalexin | 14 | 98 | $67.70 | 14 |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2020-11-17NUCC Taxonomy Code: 207N00000X
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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - DERMATOLOGY
I20160922000832
MA
6204123029
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Umass Memorial Medical Group Inc
281 Lincoln St, Worcester, MA 016052138
Phone: 5083341000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Dermatology
Student in an Organized Health Care Education/Training Program
MDMMSC
Dermatology
Doctor of Medicine (M.D.)
Dermatology
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant
Dermatology
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated June 17, 2009.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Dermatology Specialists in Worcester
- Dr. Amanda Auerbach, MD
- Dr. Seth Kates, MD
- Dr. Ryan Svoboda, MD
- Dr. Nikki Levin, MD
- Dr. Mark Scharf, MD
- Zainab Abbas
Mailing Address
Po Box 415348
Boston, MA 022415348
Phone: 8002258885