2026 NPPES data Registered Nurse NPI 1659894285 RN
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CLAIRE ANAGNOSTOPULOS, RN

Registered Nurse in BOSTON, 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
369
Medicare Part D claims · 76 beneficiaries · Registered Nurse avg: 1K
What the federal data reveals: CLAIRE ANAGNOSTOPULOS, RN is a Registered Nurse ([object Object]) practicing in BOSTON, Massachusetts with a Medicare Part D prescribing footprint of 369 claims across 76 beneficiaries .

What stands out: CLAIRE ANAGNOSTOPULOS, RN filed 369 Medicare Part D claims in 2023 across BOSTON, Massachusetts. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

CLAIRE ANAGNOSTOPULOS, RN at a glance

Quality data not reported

NPI registry status

Active

Issued 07/25/2017

NPI 1659894285

Primary specialty

Registered Nurse

High-volume

175,652 US NPIs in this specialty

Medicare Part D claims

369 63% vs specialty avg

2023 prescription claims

Specialty avg: 1,000

Specialty distribution in Massachusetts

How Registered Nurse compares to other specialties among Massachusetts providers

Massachusetts providers

Registered Nurse share within Massachusetts

1. Registered Nurse42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Registered Nurse share within Massachusetts

Specialty board-certification context

Estimated specialty board-certified rate — Registered Nurse (ABMS / AOA reference)

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

Est. board-certified rate (Registered Nurse) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Registered Nurse) — 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).

CLAIRE ANAGNOSTOPULOS, RN is a Registered Nurse provider practicing in BOSTON, Massachusetts, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: RN. NPI: 1659894285. 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.

CLAIRE ANAGNOSTOPULOS, RN appears in the CMS NPPES registry as a Registered Nurse provider holding RN credentials at 780 ALBANY ST, BOSTON, MA, 02118, with a listed phone of (857) 654-1000. NPI 1659894285 was issued on 07/25/2017. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ANAGNOSTOPULOS 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 369 prescription claims written by this provider, covering 76 Medicare beneficiaries and totaling roughly $35K in drug spend, with an opioid prescribing rate of 3.3%. 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.

Registered Nurse is a high-volume specialty nationwide, with 175,652 enrolled providers across 56 states and an average of 1,000 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

780 ALBANY ST
BOSTON, MA 02118

Provider Details

NPI 1659894285
Specialty Registered Nurse
Credentials RN
Gender Female
NPI Issued 07/25/2017

Hospital and facility affiliations

Facilities where CLAIRE ANAGNOSTOPULOS, RN 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.

BOSTON HEALTH CARE FOR THE HOMELESS PROGRAM, INC.
BOSTON, 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).

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 CLAIRE ANAGNOSTOPULOS, RN. To verify CLAIRE ANAGNOSTOPULOS, RN'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.

Medicare Part D Prescribing Data

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

369
Total Claims
$35K
Total Drug Cost
76
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
436
Total Day Supply
9,752
Generic Drug Cost
$9K
Opioid Claims
12 (3.3% rate)
Antibiotic Claims
16

Patient Demographics

Average Patient Age
57.3 years
Avg HCC Risk Score
1.59
Gender Split
45% female / 55% male
Age Distribution
<65: 52, 65-74: 21, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Buprenorphine-Naloxone
Buprenorphine Hcl/Naloxone Hcl
76
Suboxone
Buprenorphine Hcl/Naloxone Hcl
27
Atorvastatin Calcium
19
Gabapentin
19
Ibuprofen
12
Metformin Hcl Er
Metformin Hcl
11
Tramadol Hcl
11

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

Registered Nurse Overview

How CLAIRE ANAGNOSTOPULOS, RN fits within the Registered Nurse landscape nationally.

175,652
Registered Nurse Providers in US
56
States with Registered Nurse
1,000
Avg Claims per Provider

CLAIRE ANAGNOSTOPULOS, RN's 369 claims are below the specialty average of 1,000.

Nearby Registered Nurse Providers in Massachusetts

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

Compare Registered Nurse nationally: see state-by-state distribution →

Frequently Asked Questions

What is CLAIRE ANAGNOSTOPULOS, RN's specialty?
CLAIRE ANAGNOSTOPULOS, RN specializes in Registered Nurse and practices in BOSTON, Massachusetts. Credentials: RN.
How much does CLAIRE ANAGNOSTOPULOS, RN prescribe under Medicare Part D?
In 2023, CLAIRE ANAGNOSTOPULOS, RN wrote 369 Medicare Part D claims totaling $35K in drug costs for 76 beneficiaries.
Where is CLAIRE ANAGNOSTOPULOS, RN located?
CLAIRE ANAGNOSTOPULOS, RN is located at 780 ALBANY ST, BOSTON, MA, 02118. Phone: (857) 654-1000.
What is CLAIRE ANAGNOSTOPULOS, RN's NPI number?
CLAIRE ANAGNOSTOPULOS, RN's National Provider Identifier (NPI) is 1659894285, issued on 07/25/2017.
Does CLAIRE ANAGNOSTOPULOS, RN prescribe opioids?
Yes, CLAIRE ANAGNOSTOPULOS, RN had 12 opioid claims in 2023 with an opioid prescribing rate of 3.3%.
How many Registered Nurse providers are there in the US?
There are 175,652 Registered Nurse providers across 56 states in the US. The average Registered Nurse provider writes 1,000 Medicare Part D claims per year.
What drugs does CLAIRE ANAGNOSTOPULOS, RN prescribe most often?
Based on 2023 Medicare Part D data, CLAIRE ANAGNOSTOPULOS, RN's most frequently prescribed drugs include Buprenorphine-Naloxone, Suboxone, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CLAIRE ANAGNOSTOPULOS, RN accept Medicare?
CLAIRE ANAGNOSTOPULOS, RN appears in CMS Medicare data with 369 Part D claims and 76 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CLAIRE ANAGNOSTOPULOS, RN's credentials?
CLAIRE ANAGNOSTOPULOS, RN's NPI is 1659894285 with credentials RN. 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