2026 NPPES data Ambulatory Care Pharmacist NPI 1255883542 PHARM.D
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THUYVAN PHAN, PHARM.D

Ambulatory Care Pharmacist in CHAPEL HILL, North Carolina. 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
102
Medicare Part D claims · 37 beneficiaries · Ambulatory Care Pharmacist avg: 492
Generic prescribing
79%
generic claims · 21% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: THUYVAN PHAN, PHARM.D is a Ambulatory Care Pharmacist ([object Object]) practicing in CHAPEL HILL, North Carolina with a Medicare Part D prescribing footprint of 102 claims across 37 beneficiaries — 21% brand-name prescribing .

What stands out: THUYVAN PHAN, PHARM.D filed 102 Medicare Part D claims in 2023 across CHAPEL HILL, North Carolina. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

THUYVAN PHAN, PHARM.D at a glance

Quality data not reported

NPI registry status

Active

Issued 11/02/2016

NPI 1255883542

Primary specialty

Ambulatory Care Pharmacist

Niche

3,473 US NPIs in this specialty

Medicare Part D claims

102 79% vs specialty avg

2023 prescription claims

Specialty avg: 492

Specialty distribution in North Carolina

How Ambulatory Care Pharmacist compares to other specialties among North Carolina providers

North Carolina providers

Ambulatory Care Pharmacist share within North Carolina

1. Ambulatory Care Pharmacist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Ambulatory Care Pharmacist share within North Carolina

Specialty board-certification context

Estimated specialty board-certified rate — Ambulatory Care Pharmacist (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Ambulatory Care Pharmacist ABMS/AOA estimate

Est. board-certified rate (Ambulatory Care Pharmacist) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Ambulatory Care Pharmacist) — 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).

THUYVAN PHAN, PHARM.D is a Ambulatory Care Pharmacist provider practicing in CHAPEL HILL, North Carolina, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PHARM.D. NPI: 1255883542. 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.

THUYVAN PHAN, PHARM.D appears in the CMS NPPES registry as a Ambulatory Care Pharmacist provider holding PHARM.D credentials at 6013 FARRINGTON RD STE 200, CHAPEL HILL, NC, 27517, with a listed phone of (919) 962-4824. NPI 1255883542 was issued on 11/02/2016. 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 102 prescription claims written by this provider, covering 37 Medicare beneficiaries and totaling roughly $108K in drug spend, split 21% brand-name and 79% 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.

Ambulatory Care Pharmacist is a narrow specialty nationwide, with 3,473 enrolled providers across 52 states and an average of 492 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

6013 FARRINGTON RD STE 200
CHAPEL HILL, NC 27517

Provider Details

NPI 1255883542
Specialty Ambulatory Care Pharmacist
Credentials PHARM.D
Gender Female
NPI Issued 11/02/2016

Brand vs generic prescribing mix · Typical

THUYVAN PHAN, PHARM.D — brand share 21.0%
Specialty average (est.)

21% brand-name claims vs 79% generic, on 102 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.

102
Total Claims
$108K
Total Drug Cost
37
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
143
Total Day Supply
4,182
Brand vs Generic
21% brand / 79% generic
Brand Drug Cost
$105K
Generic Drug Cost
$4K

Patient Demographics

Average Patient Age
69.9 years
Avg HCC Risk Score
2.33
Gender Split
57% female / 43% 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
Allopurinol
36
Methotrexate
Methotrexate Sodium
13
Colchicine
12

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

Ambulatory Care Pharmacist Overview

How THUYVAN PHAN, PHARM.D fits within the Ambulatory Care Pharmacist landscape nationally.

3,473
Ambulatory Care Pharmacist Providers in US
52
States with Ambulatory Care Pharmacist
492
Avg Claims per Provider

THUYVAN PHAN, PHARM.D's 102 claims are below the specialty average of 492.

Nearby Ambulatory Care Pharmacist Providers in North Carolina

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

Compare Ambulatory Care Pharmacist nationally: see state-by-state distribution →

Frequently Asked Questions

What is THUYVAN PHAN, PHARM.D's specialty?
THUYVAN PHAN, PHARM.D specializes in Ambulatory Care Pharmacist and practices in CHAPEL HILL, North Carolina. Credentials: PHARM.D.
How much does THUYVAN PHAN, PHARM.D prescribe under Medicare Part D?
In 2023, THUYVAN PHAN, PHARM.D wrote 102 Medicare Part D claims totaling $108K in drug costs for 37 beneficiaries.
Where is THUYVAN PHAN, PHARM.D located?
THUYVAN PHAN, PHARM.D is located at 6013 FARRINGTON RD STE 200, CHAPEL HILL, NC, 27517. Phone: (919) 962-4824.
What is THUYVAN PHAN, PHARM.D's NPI number?
THUYVAN PHAN, PHARM.D's National Provider Identifier (NPI) is 1255883542, issued on 11/02/2016.
Does THUYVAN PHAN, PHARM.D prescribe more brand-name or generic drugs?
THUYVAN PHAN, PHARM.D's prescribing is 21% brand-name and 79% generic drugs by claim count, with $105K in brand drug costs.
How many Ambulatory Care Pharmacist providers are there in the US?
There are 3,473 Ambulatory Care Pharmacist providers across 52 states in the US. The average Ambulatory Care Pharmacist provider writes 492 Medicare Part D claims per year.
What drugs does THUYVAN PHAN, PHARM.D prescribe most often?
Based on 2023 Medicare Part D data, THUYVAN PHAN, PHARM.D's most frequently prescribed drugs include Allopurinol, Methotrexate, Colchicine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does THUYVAN PHAN, PHARM.D accept Medicare?
THUYVAN PHAN, PHARM.D appears in CMS Medicare data with 102 Part D claims and 37 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify THUYVAN PHAN, PHARM.D's credentials?
THUYVAN PHAN, PHARM.D's NPI is 1255883542 with credentials PHARM.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