KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D.
Internal Medicine Physician in BOSTON, Massachusetts. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.
What the federal data shows
KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D. filed 126 Medicare Part D claims in 2023 as a Internal Medicine Physician in BOSTON, Massachusetts, prescribing 33% generic.
- 126
- Part D claims, 2023
- 33%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023 — across all CMS prescribers nationally
126 35th percentile higher than 35% of 1,370,886 prescribers
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
KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D. 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).
What does the federal data show about KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D.?
Quality data not reportedPrimary specialty
Medicare Part D claims
Specialty distribution in Massachusetts
How Internal Medicine Physician compares to other specialties among Massachusetts providers
Internal Medicine Physician share within Massachusetts
Internal Medicine Physician is one of the more visible NUCC categories in Massachusetts
Each bar reflects the share of in-state providers whose primary NUCC taxonomy matches the specialty. Long tail of ~690 NUCC codes folded into "Other" to keep the comparison legible.
Specialty board-certification context
Estimated specialty board-certified rate — Internal Medicine Physician (ABMS / AOA reference)
- Est. board-certified rate
- 78%
- Internal Medicine Physician ABMS/AOA estimate
Est. board-certified rate (Internal Medicine Physician) — ABMS / AOA estimate
Verify credentials
- Verify via ABMS free public lookup
- Verify via AOA osteopathic boards
- Specialty volume Internal Medicine Physician US NPIs
Specialty board-certified rate — Internal Medicine Physician estimate
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus Maintenance of Certification cycles. CMS does not publish a per-provider board-certification field; the figure shown is the specialty-level estimated rate from ABMS / AOA reference data.
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).
KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D. is a Internal Medicine Physician provider practicing in BOSTON, Massachusetts, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1770882151. 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.
KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 725 ALBANY ST, #9B, BOSTON, MA, 02118, with a listed phone of (617) 638-7480. NPI 1770882151 was issued on 03/24/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ALYSANDRATOS 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 126 prescription claims written by this provider, covering 20 Medicare beneficiaries and totaling roughly $685K in drug spend, split 67% brand-name and 33% 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
Provider Details
| NPI | 1770882151 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 03/24/2011 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D.'s current license status, disciplinary history, and board certifications with the Massachusetts Board of Registration in Medicine in Massachusetts before relying on this page for a clinical or care decision.
How we sourced this profile
Hospital and facility affiliations
Facilities where KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D. 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.
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D.. To verify KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D.'s current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
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
67% brand-name claims vs 33% generic, on 126 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.
Prescribing Breakdown
- 30-Day Fills
- 151
- Total Day Supply
- 4,279
- Brand vs Generic
- 67% brand / 33% generic
- Brand Drug Cost
- $678K
- Generic Drug Cost
- $7K
Patient Demographics
- Average Patient Age
- 68.7 years
- Avg HCC Risk Score
- 2.66
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Ofev Nintedanib Esylate | 49 |
| Mycophenolate Mofetil | 16 |
* 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 KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D. fits within the Internal Medicine Physician landscape nationally.
KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D.'s 126 claims are below 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 ALYSANDRATOS.
Compare Internal Medicine Physician nationally: see state-by-state distribution →
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Frequently Asked Questions
What is KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D.'s specialty? ▼
How much does KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D. prescribe under Medicare Part D? ▼
Where is KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D. located? ▼
What is KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D.'s NPI number? ▼
Does KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D. prescribe more brand-name or generic drugs? ▼
How many Internal Medicine Physician providers are there in the US? ▼
What drugs does KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D. prescribe most often? ▼
Does KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D. accept Medicare? ▼
How can I verify KONSTANTINOS-DIONYSI ALYSANDRATOS, M.D.'s credentials? ▼
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