2026 NPPES data Infectious Disease Physician NPI 1487670444 M.D.
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FREDA CHU, M.D.

Infectious Disease Physician in SCARSDALE, New York. 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
17
Medicare Part D claims · Infectious Disease Physician avg: 816

What the federal data shows

FREDA CHU, M.D. filed 17 Medicare Part D claims in 2023 as a Infectious Disease Physician in SCARSDALE, New York.

17
Part D claims, 2023

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.

FREDA CHU, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

17 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. 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)

FREDA CHU, M.D. 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 FREDA CHU, M.D.?

Quality data not reported

NPI registry status

Active

Issued 07/14/2006

NPI 1487670444

Primary specialty

Infectious Disease Physician

Mid-sized

8,292 US NPIs in this specialty

Medicare Part D claims

17 98% vs specialty avg

2023 prescription claims

Specialty avg: 816

Specialty distribution in New York

How Infectious Disease Physician compares to other specialties among New York providers

New York providers

Infectious Disease Physician share within New York

1. Infectious Disease Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Infectious Disease Physician share within New York

Specialty board-certification context

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

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

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

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

FREDA CHU, M.D. appears in the CMS NPPES registry as a Infectious Disease Physician provider holding M.D. credentials at 259 HEATHCOTE RD, SCARSDALE, NY, 10583, with a listed phone of (914) 723-8100. NPI 1487670444 was issued on 07/14/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHU 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 17 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $17K 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.

Infectious Disease Physician is a mid-sized specialty nationwide, with 8,292 enrolled providers across 54 states and an average of 816 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

259 HEATHCOTE RD
SCARSDALE, NY 10583

Provider Details

NPI 1487670444
Specialty Infectious Disease Physician
Credentials M.D.
Gender Female
NPI Issued 07/14/2006

License & disciplinary context — New York NYSBPMC 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 ~100K New York medical licensees in 2023 — they are NOT specific to FREDA CHU, M.D.. To verify FREDA CHU, M.D.'s current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases

NYSBPMC 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 New York 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.

17
Total Claims
$17K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
17
Total Day Supply
472

Patient Demographics

Average Patient Age
68.7 years
Avg HCC Risk Score
4.74

Infectious Disease Physician Overview

How FREDA CHU, M.D. fits within the Infectious Disease Physician landscape nationally.

8,292
Infectious Disease Physician Providers in US
54
States with Infectious Disease Physician
816
Avg Claims per Provider

FREDA CHU, M.D.'s 17 claims are below the specialty average of 816.

Nearby Infectious Disease Physician Providers in New York

Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as CHU.

Compare Infectious Disease Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is FREDA CHU, M.D.'s specialty?
FREDA CHU, M.D. specializes in Infectious Disease Physician and practices in SCARSDALE, New York. Credentials: M.D..
How much does FREDA CHU, M.D. prescribe under Medicare Part D?
In 2023, FREDA CHU, M.D. wrote 17 Medicare Part D claims totaling $17K in drug costs for N/A beneficiaries.
Where is FREDA CHU, M.D. located?
FREDA CHU, M.D. is located at 259 HEATHCOTE RD, SCARSDALE, NY, 10583. Phone: (914) 723-8100.
What is FREDA CHU, M.D.'s NPI number?
FREDA CHU, M.D.'s National Provider Identifier (NPI) is 1487670444, issued on 07/14/2006.
How many Infectious Disease Physician providers are there in the US?
There are 8,292 Infectious Disease Physician providers across 54 states in the US. The average Infectious Disease Physician provider writes 816 Medicare Part D claims per year.
Does FREDA CHU, M.D. accept Medicare?
FREDA CHU, M.D. appears in CMS Medicare data with 17 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify FREDA CHU, M.D.'s credentials?
FREDA CHU, M.D.'s NPI is 1487670444 with credentials M.D.. 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