2026 NPPES data Dermatology Physician NPI 1902858525 MD
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TIMOTHY BILIOURIS, MD

Dermatology Physician in S DENNIS, Massachusetts. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
7K
Medicare Part D claims · 463 beneficiaries · Dermatology Physician avg: 729
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$279.1
13 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: TIMOTHY BILIOURIS, MD is a Dermatology Physician ([object Object]) practicing in S DENNIS, Massachusetts with a Medicare Part D prescribing footprint of 7K claims across 463 beneficiaries — 11% brand-name prescribing . Industry payments of $279.1 across 13 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: TIMOTHY BILIOURIS, MD filed 7,220 Medicare Part D claims in 2023 across S DENNIS, Massachusetts. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

TIMOTHY BILIOURIS, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

TIMOTHY BILIOURIS, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 05/16/2006

NPI 1902858525

Primary specialty

Dermatology Physician

Mid-sized

14,610 US NPIs in this specialty

Medicare Part D claims

7,220 890% vs specialty avg

2023 prescription claims

Specialty avg: 729

Specialty distribution in Massachusetts

How Dermatology Physician compares to other specialties among Massachusetts providers

Massachusetts providers

Dermatology Physician share within Massachusetts

1. Dermatology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Dermatology Physician share within Massachusetts

Specialty board-certification context

Estimated specialty board-certified rate — Dermatology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Dermatology Physician ABMS/AOA estimate

Est. board-certified rate (Dermatology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Dermatology Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

TIMOTHY BILIOURIS, MD is a Dermatology Physician provider practicing in S DENNIS, Massachusetts, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1902858525. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

TIMOTHY BILIOURIS, MD appears in the CMS NPPES registry as a Dermatology Physician provider holding MD credentials at 65 ROUTE 134, S DENNIS, MA, 02660, with a listed phone of (508) 394-7113. NPI 1902858525 was issued on 05/16/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BILIOURIS most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 7,220 prescription claims written by this provider, covering 463 Medicare beneficiaries and totaling roughly $816K in drug spend, split 11% brand-name and 89% generic by claim count, with an opioid prescribing rate of 1.5%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Dermatology Physician is a mid-sized specialty nationwide, with 14,610 enrolled providers across 53 states and an average of 729 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

65 ROUTE 134
S DENNIS, MA 02660

Provider Details

NPI 1902858525
Specialty Dermatology Physician
Credentials MD
Gender Male
NPI Issued 05/16/2006

Hospital and facility affiliations

Facilities where TIMOTHY BILIOURIS, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

PHYSIOTHERAPY ASSOCIATES INC
SOUTH DENNIS, MA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for TIMOTHY BILIOURIS, MD. Source: openpaymentsdata.cms.gov.

Total received

$279

Largest payer

Amgen Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

License & disciplinary context — Massachusetts BORIM 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~38K Massachusetts medical licensees in 2023 — they are NOT specific to TIMOTHY BILIOURIS, MD. To verify TIMOTHY BILIOURIS, MD's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases

BORIM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

TIMOTHY BILIOURIS, MD — brand share 11.0%
Specialty average (est.)

11% brand-name claims vs 89% generic, on 7,220 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

7,220
Total Claims
$816K
Total Drug Cost
463
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
18,217
Total Day Supply
538,288
Brand vs Generic
11% brand / 89% generic
Brand Drug Cost
$628K
Generic Drug Cost
$186K
Opioid Claims
109 (1.5% rate)
Antibiotic Claims
141

Patient Demographics

Average Patient Age
77.3 years
Avg HCC Risk Score
1.32
Gender Split
46% female / 54% male
Age Distribution
<65: 21, 65-74: 161, 75-84: 187, 85+: 94

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Atorvastatin Calcium
398
Lisinopril
333
Levothyroxine Sodium
328
Omeprazole
309
Amlodipine Besylate
305
Losartan Potassium
180
Metoprolol Succinate
176
Tamsulosin Hcl
169
Simvastatin
166
Rosuvastatin Calcium
162

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Dermatology Physician Overview

How TIMOTHY BILIOURIS, MD fits within the Dermatology Physician landscape nationally.

14,610
Dermatology Physician Providers in US
53
States with Dermatology Physician
729
Avg Claims per Provider

TIMOTHY BILIOURIS, MD's 7,220 claims are above the specialty average of 729.

Nearby Dermatology Physician Providers in Massachusetts

Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as BILIOURIS.

Compare Dermatology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is TIMOTHY BILIOURIS, MD's specialty?
TIMOTHY BILIOURIS, MD specializes in Dermatology Physician and practices in S DENNIS, Massachusetts. Credentials: MD.
How much does TIMOTHY BILIOURIS, MD prescribe under Medicare Part D?
In 2023, TIMOTHY BILIOURIS, MD wrote 7,220 Medicare Part D claims totaling $816K in drug costs for 463 beneficiaries.
Where is TIMOTHY BILIOURIS, MD located?
TIMOTHY BILIOURIS, MD is located at 65 ROUTE 134, S DENNIS, MA, 02660. Phone: (508) 394-7113.
What is TIMOTHY BILIOURIS, MD's NPI number?
TIMOTHY BILIOURIS, MD's National Provider Identifier (NPI) is 1902858525, issued on 05/16/2006.
Does TIMOTHY BILIOURIS, MD prescribe more brand-name or generic drugs?
TIMOTHY BILIOURIS, MD's prescribing is 11% brand-name and 89% generic drugs by claim count, with $628K in brand drug costs.
Does TIMOTHY BILIOURIS, MD prescribe opioids?
Yes, TIMOTHY BILIOURIS, MD had 109 opioid claims in 2023 with an opioid prescribing rate of 1.5%.
How many Dermatology Physician providers are there in the US?
There are 14,610 Dermatology Physician providers across 53 states in the US. The average Dermatology Physician provider writes 729 Medicare Part D claims per year.
What drugs does TIMOTHY BILIOURIS, MD prescribe most often?
Based on 2023 Medicare Part D data, TIMOTHY BILIOURIS, MD's most frequently prescribed drugs include Atorvastatin Calcium, Lisinopril, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does TIMOTHY BILIOURIS, MD accept Medicare?
TIMOTHY BILIOURIS, MD appears in CMS Medicare data with 7,220 Part D claims and 463 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify TIMOTHY BILIOURIS, MD's credentials?
TIMOTHY BILIOURIS, MD's NPI is 1902858525 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology