2026 NPPES data Neurology Physician NPI 1639674385 MD
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DANIEL CHIU, MD

Neurology Physician 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
22
Medicare Part D claims · 15 beneficiaries · Neurology Physician avg: 1K
What the federal data reveals: DANIEL CHIU, MD is a Neurology Physician ([object Object]) practicing in BOSTON, Massachusetts with a Medicare Part D prescribing footprint of 22 claims across 15 beneficiaries .

What stands out: DANIEL CHIU, MD filed 22 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.

Board certification likely (heuristic — not verified)

DANIEL CHIU, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

DANIEL CHIU, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 03/26/2018

NPI 1639674385

Primary specialty

Neurology Physician

Mid-sized

19,866 US NPIs in this specialty

Medicare Part D claims

22 98% vs specialty avg

2023 prescription claims

Specialty avg: 1,309

Specialty distribution in Massachusetts

How Neurology Physician compares to other specialties among Massachusetts providers

Massachusetts providers

Neurology Physician share within Massachusetts

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

Specialty board-certification context

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

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

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

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

DANIEL CHIU, MD is a Neurology Physician provider practicing in BOSTON, Massachusetts, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1639674385. 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.

DANIEL CHIU, MD appears in the CMS NPPES registry as a Neurology Physician provider holding MD credentials at 55 FRUIT ST, BOSTON, MA, 02114, with a listed phone of (617) 726-2000. NPI 1639674385 was issued on 03/26/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHIU 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 22 prescription claims written by this provider, covering 15 Medicare beneficiaries and totaling roughly $5K in drug spend. 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.

Neurology Physician is a mid-sized specialty nationwide, with 19,866 enrolled providers across 54 states and an average of 1,309 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

55 FRUIT ST
BOSTON, MA 02114

Provider Details

NPI 1639674385
Specialty Neurology Physician
Credentials MD
Gender Male
NPI Issued 03/26/2018

Hospital and facility affiliations

Facilities where DANIEL CHIU, 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.

MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC
BOSTON, MA
THE GENERAL HOSPITAL CORPORATION
WALTHAM, 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 DANIEL CHIU, MD. To verify DANIEL CHIU, 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.

Medicare Part D Prescribing Data

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

22
Total Claims
$5K
Total Drug Cost
15
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
35
Total Day Supply
948
Generic Drug Cost
$1K

Patient Demographics

Average Patient Age
69.3 years
Avg HCC Risk Score
2.73

Neurology Physician Overview

How DANIEL CHIU, MD fits within the Neurology Physician landscape nationally.

19,866
Neurology Physician Providers in US
54
States with Neurology Physician
1,309
Avg Claims per Provider

DANIEL CHIU, MD's 22 claims are below the specialty average of 1,309.

Nearby Neurology Physician Providers in Massachusetts

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

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

Frequently Asked Questions

What is DANIEL CHIU, MD's specialty?
DANIEL CHIU, MD specializes in Neurology Physician and practices in BOSTON, Massachusetts. Credentials: MD.
How much does DANIEL CHIU, MD prescribe under Medicare Part D?
In 2023, DANIEL CHIU, MD wrote 22 Medicare Part D claims totaling $5K in drug costs for 15 beneficiaries.
Where is DANIEL CHIU, MD located?
DANIEL CHIU, MD is located at 55 FRUIT ST, BOSTON, MA, 02114. Phone: (617) 726-2000.
What is DANIEL CHIU, MD's NPI number?
DANIEL CHIU, MD's National Provider Identifier (NPI) is 1639674385, issued on 03/26/2018.
How many Neurology Physician providers are there in the US?
There are 19,866 Neurology Physician providers across 54 states in the US. The average Neurology Physician provider writes 1,309 Medicare Part D claims per year.
Does DANIEL CHIU, MD accept Medicare?
DANIEL CHIU, MD appears in CMS Medicare data with 22 Part D claims and 15 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DANIEL CHIU, MD's credentials?
DANIEL CHIU, MD's NPI is 1639674385 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