2026 NPPES data Hospitalist Physician NPI 1437390358
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THAO-LY PHAN

Hospitalist Physician in WILMINGTON, Delaware. 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
14
Medicare Part D claims · Hospitalist Physician avg: 888
What the federal data reveals: THAO-LY PHAN is a Hospitalist Physician ([object Object]) practicing in WILMINGTON, Delaware with a Medicare Part D prescribing footprint of 14 claims .

What stands out: THAO-LY PHAN filed 14 Medicare Part D claims in 2023 across WILMINGTON, Delaware. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

THAO-LY PHAN 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).

THAO-LY PHAN at a glance

Quality data not reported

NPI registry status

Active

Issued 03/23/2009

NPI 1437390358

Primary specialty

Hospitalist Physician

Mid-sized

16,825 US NPIs in this specialty

Medicare Part D claims

14 98% vs specialty avg

2023 prescription claims

Specialty avg: 888

Specialty distribution in Delaware

How Hospitalist Physician compares to other specialties among Delaware providers

Delaware providers

Hospitalist Physician share within Delaware

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

Specialty board-certification context

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

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

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

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

THAO-LY PHAN is a Hospitalist Physician provider practicing in WILMINGTON, Delaware, according to the CMS National Plan and Provider Enumeration System (NPPES). NPI: 1437390358. 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.

THAO-LY PHAN appears in the CMS NPPES registry as a Hospitalist Physician provider at 1600 ROCKLAND RD., WILMINGTON, DE, 19803, with a listed phone of (302) 651-6040. NPI 1437390358 was issued on 03/23/2009. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what PHAN 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 14 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $217 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.

Hospitalist Physician is a mid-sized specialty nationwide, with 16,825 enrolled providers across 54 states and an average of 888 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

1600 ROCKLAND RD.
WILMINGTON, DE 19803

Provider Details

NPI 1437390358
Specialty Hospitalist Physician
Gender Female
NPI Issued 03/23/2009

Hospital and facility affiliations

Facilities where THAO-LY PHAN 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.

THE NEMOURS FOUNDATION
WILMINGTON, DE

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Medicare Part D Prescribing Data

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

14
Total Claims
$217
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
26
Total Day Supply
780
Brand Drug Cost
$0
Generic Drug Cost
$217

Patient Demographics

Average Patient Age
64.5 years
Avg HCC Risk Score
0.70

Hospitalist Physician Overview

How THAO-LY PHAN fits within the Hospitalist Physician landscape nationally.

16,825
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
888
Avg Claims per Provider

THAO-LY PHAN's 14 claims are below the specialty average of 888.

Nearby Hospitalist Physician Providers in Delaware

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

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

Frequently Asked Questions

What is THAO-LY PHAN's specialty?
THAO-LY PHAN specializes in Hospitalist Physician and practices in WILMINGTON, Delaware.
How much does THAO-LY PHAN prescribe under Medicare Part D?
In 2023, THAO-LY PHAN wrote 14 Medicare Part D claims totaling $217 in drug costs for N/A beneficiaries.
Where is THAO-LY PHAN located?
THAO-LY PHAN is located at 1600 ROCKLAND RD., WILMINGTON, DE, 19803. Phone: (302) 651-6040.
What is THAO-LY PHAN's NPI number?
THAO-LY PHAN's National Provider Identifier (NPI) is 1437390358, issued on 03/23/2009.
How many Hospitalist Physician providers are there in the US?
There are 16,825 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 888 Medicare Part D claims per year.
Does THAO-LY PHAN accept Medicare?
THAO-LY PHAN appears in CMS Medicare data with 14 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 THAO-LY PHAN's credentials?
THAO-LY PHAN's NPI is 1437390358. 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