2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1831298801 MD
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AILIAN CHEN, MD

Endocrinology, Diabetes & Metabolism Physician in GREAT NECK, 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
1K
Medicare Part D claims · 117 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
59%
generic claims · 41% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$77.13
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: AILIAN CHEN, MD is a Endocrinology, Diabetes & Metabolism Physician ([object Object]) practicing in GREAT NECK, New York with a Medicare Part D prescribing footprint of 1K claims across 117 beneficiaries — 41% brand-name prescribing . Industry payments of $77.13 across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: AILIAN CHEN, MD filed 1,108 Medicare Part D claims in 2023 across GREAT NECK, New York. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

AILIAN CHEN, MD 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).

AILIAN CHEN, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 09/22/2006

NPI 1831298801

Primary specialty

Endocrinology, Diabetes & Metabolism Physician

Mid-sized

7,852 US NPIs in this specialty

Medicare Part D claims

1,108 58% vs specialty avg

2023 prescription claims

Specialty avg: 2,639

Specialty distribution in New York

How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among New York providers

New York providers

Endocrinology, Diabetes & Metabolism Physician share within New York

1. Endocrinology, Diabetes & Metabolism Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Endocrinology, Diabetes & Metabolism Physician share within New York

Specialty board-certification context

Estimated specialty board-certified rate — Endocrinology, Diabetes & Metabolism Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Endocrinology, Diabetes & Metabolism Physician ABMS/AOA estimate

Est. board-certified rate (Endocrinology, Diabetes & Metabolism Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Endocrinology, Diabetes & Metabolism 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).

AILIAN CHEN, MD is a Endocrinology, Diabetes & Metabolism Physician provider practicing in GREAT NECK, New York, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1831298801. 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.

AILIAN CHEN, MD appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding MD credentials at 7 BOND ST STE 1A, GREAT NECK, NY, 11021, with a listed phone of (516) 330-1313. NPI 1831298801 was issued on 09/22/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHEN 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 1,108 prescription claims written by this provider, covering 117 Medicare beneficiaries and totaling roughly $601K in drug spend, split 41% brand-name and 59% 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.

Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 enrolled providers across 54 states and an average of 2,639 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

7 BOND ST STE 1A
GREAT NECK, NY 11021

Provider Details

NPI 1831298801
Specialty Endocrinology, Diabetes & Metabolism Physician
Credentials MD
Gender Female
NPI Issued 09/22/2006

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for AILIAN CHEN, MD. Source: openpaymentsdata.cms.gov.

Total received

$77

Largest payer

Abbott Laboratories

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

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 AILIAN CHEN, MD. To verify AILIAN CHEN, MD'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.

Brand vs generic prescribing mix · Above average

AILIAN CHEN, MD — brand share 41.0%
Specialty average (est.)

41% brand-name claims vs 59% generic, on 1,108 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.

1,108
Total Claims
$601K
Total Drug Cost
117
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,947
Total Day Supply
87,863
Brand vs Generic
41% brand / 59% generic
Brand Drug Cost
$571K
Generic Drug Cost
$25K

Patient Demographics

Average Patient Age
74.7 years
Avg HCC Risk Score
1.33
Gender Split
68% female / 32% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Levothyroxine Sodium
99
Glipizide Er
Glipizide
74
Synthroid
Levothyroxine Sodium
71
Rosuvastatin Calcium
44
Metformin Hcl Er
Metformin Hcl
42
Farxiga
Dapagliflozin Propanediol
34
Ozempic
Semaglutide
33
Metformin Hcl
30
Acarbose
29
Trulicity
Dulaglutide
29

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

Endocrinology, Diabetes & Metabolism Physician Overview

How AILIAN CHEN, MD fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.

7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider

AILIAN CHEN, MD's 1,108 claims are below the specialty average of 2,639.

Nearby Endocrinology, Diabetes & Metabolism Physician Providers in New York

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

Compare Endocrinology, Diabetes & Metabolism Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is AILIAN CHEN, MD's specialty?
AILIAN CHEN, MD specializes in Endocrinology, Diabetes & Metabolism Physician and practices in GREAT NECK, New York. Credentials: MD.
How much does AILIAN CHEN, MD prescribe under Medicare Part D?
In 2023, AILIAN CHEN, MD wrote 1,108 Medicare Part D claims totaling $601K in drug costs for 117 beneficiaries.
Where is AILIAN CHEN, MD located?
AILIAN CHEN, MD is located at 7 BOND ST STE 1A, GREAT NECK, NY, 11021. Phone: (516) 330-1313.
What is AILIAN CHEN, MD's NPI number?
AILIAN CHEN, MD's National Provider Identifier (NPI) is 1831298801, issued on 09/22/2006.
Does AILIAN CHEN, MD prescribe more brand-name or generic drugs?
AILIAN CHEN, MD's prescribing is 41% brand-name and 59% generic drugs by claim count, with $571K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US?
There are 7,852 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does AILIAN CHEN, MD prescribe most often?
Based on 2023 Medicare Part D data, AILIAN CHEN, MD's most frequently prescribed drugs include Levothyroxine Sodium, Glipizide Er, Synthroid. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does AILIAN CHEN, MD accept Medicare?
AILIAN CHEN, MD appears in CMS Medicare data with 1,108 Part D claims and 117 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify AILIAN CHEN, MD's credentials?
AILIAN CHEN, MD's NPI is 1831298801 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