2026 NPPES data Internal Medicine Physician NPI 1922186840 MD, FACOEM
Verify on CMS →

Thomas Winters, MD, FACOEM

Internal Medicine Physician in Boston, Massachusetts. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers — including 172,858 in Internal Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration — see our methodology.

Federal data — no proprietary rating. We show these CMS records as-is — no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
15K
Medicare Part D claims · 12K beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
0%
generic claims · >99% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Thomas Winters, MD, FACOEM filed 15,274 Medicare Part D claims in 2023 as a Internal Medicine Physician in Boston, Massachusetts, prescribing 0% generic.

15K
Part D claims, 2023
0%
generic prescribing

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

Thomas Winters, MD, FACOEM's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

15,274 Top 2% higher than 98% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

Thomas Winters, MD, FACOEM practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Thomas Winters, MD, FACOEM?

Quality data not reported

NPI registry status

Active

Issued 11/01/2006

NPI 1922186840

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

15,274 vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Massachusetts

How Internal Medicine Physician compares to other specialties among Massachusetts providers

Massachusetts providers

Largest specialties in Massachusetts (% of in-state providers)

Mental Health Counselor — 8.3%Mental Health Counselor8.3%Clinical Social Worker — 7.8%Clinical Social Worker7.8%Student in an Organized Health Care Education/Training Program — 6.2%Student in an Organized Health Care Education/Training Program6.2%Behavior Technician — 4.9%Behavior Technician4.9%Counselor — 4.3%Counselor4.3%Internal Medicine Physician — 3.7%Internal Medicine Physician3.7%
Largest specialties in Massachusetts (% of in-state providers)

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Internal Medicine 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).

Thomas Winters, MD, FACOEM appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD, FACOEM credentials at 333 LONGWOOD AVE, Boston, MA, 02115, with a listed phone of (857) 218-3046. NPI 1922186840 was issued on 11/01/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Winters 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 15,274 prescription claims written by this provider, covering 12,463 Medicare beneficiaries and totaling roughly $3.7 million in drug spend, split >99% brand-name and 0% generic by claim count. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

333 LONGWOOD AVE
Boston, MA 02115

Provider Details

NPI 1922186840
Specialty Internal Medicine Physician
Credentials MD, FACOEM
Gender Male
NPI Issued 11/01/2006

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 Thomas Winters, MD, FACOEM. To verify Thomas Winters, MD, FACOEM'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 · Brand-heavy

Thomas Winters, MD, FACOEM — brand share 100.0%
Internal Medicine Physician average

>99% brand-name claims vs 0% generic, on 15,274 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.

15,274
Total Claims
$3.7M
Total Drug Cost
12,463
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
15,280
Total Day Supply
15,925
Brand vs Generic
>99% brand / 0% generic
Brand Drug Cost
$3.7M

Patient Demographics

Average Patient Age
75.5 years
Avg HCC Risk Score
1.03
Gender Split
59% female / 41% male
Age Distribution
<65: 388, 65-74: 5,585, 75-84: 5,015, 85+: 1,475

Top Prescribed Drugs (Medicare Part D)

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

What Thomas Winters, MD, FACOEM prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Shingrix
Varicella-Zoster Ge/As01b/Pf
7,146
Arexvy
Rsvpref3 Antigen/As01e/Pf
6,538
Havrix
Hepatitis A Virus Vaccine/Pf
29
Twinrix
Hepatitis A And B Vaccine/Pf
26
Heplisav-B
Hepatitis B Vaccine/Cpg1018/Pf
16
Boostrix Tdap
"Diphth
N/A

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

Internal Medicine Physician Overview

How Thomas Winters, MD, FACOEM fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

Thomas Winters, MD, FACOEM's 15,274 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Massachusetts

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

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry — providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Massachusetts medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Internal Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only — they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Thomas Winters, MD, FACOEM's specialty?
Thomas Winters, MD, FACOEM specializes in Internal Medicine Physician and practices in Boston, Massachusetts. Credentials: MD, FACOEM.
How much does Thomas Winters, MD, FACOEM prescribe under Medicare Part D?
In 2023, Thomas Winters, MD, FACOEM wrote 15,274 Medicare Part D claims totaling $3.7M in drug costs for 12,463 beneficiaries.
Where is Thomas Winters, MD, FACOEM located?
Thomas Winters, MD, FACOEM is located at 333 LONGWOOD AVE, Boston, MA, 02115. Phone: (857) 218-3046.
What is Thomas Winters, MD, FACOEM's NPI number?
Thomas Winters, MD, FACOEM's National Provider Identifier (NPI) is 1922186840, issued on 11/01/2006.
Does Thomas Winters, MD, FACOEM prescribe more brand-name or generic drugs?
Thomas Winters, MD, FACOEM's prescribing is >99% brand-name and 0% generic drugs by claim count, with $3.7M in brand drug costs.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Thomas Winters, MD, FACOEM prescribe most often?
Based on 2023 Medicare Part D data, Thomas Winters, MD, FACOEM's most frequently prescribed drugs include Shingrix, Arexvy, Havrix. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Thomas Winters, MD, FACOEM accept Medicare?
Thomas Winters, MD, FACOEM appears in CMS Medicare data with 15,274 Part D claims and 12,463 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Thomas Winters, MD, FACOEM's credentials?
Thomas Winters, MD, FACOEM's NPI is 1922186840 with credentials MD, FACOEM. 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

Compiled from official public sources by the PlainDoctor editorial team.