2026 NPPES data Physician Assistant NPI 1912362724
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CYNTHIA AMSTER

Physician Assistant in SANFORD, 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
3K
Medicare Part D claims · 403 beneficiaries · Physician Assistant avg: 790
Generic prescribing
49%
generic claims · 51% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$547.55
6 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: CYNTHIA AMSTER is a Physician Assistant ([object Object]) practicing in SANFORD, North Carolina with a Medicare Part D prescribing footprint of 3K claims across 403 beneficiaries — 51% brand-name prescribing . Industry payments of $547.55 across 6 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: CYNTHIA AMSTER filed 2,515 Medicare Part D claims in 2023 across SANFORD, North Carolina. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

CYNTHIA AMSTER at a glance

Quality data not reported

NPI registry status

Active

Issued 12/21/2015

NPI 1912362724

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

2,515 218% vs specialty avg

2023 prescription claims

Specialty avg: 790

Specialty distribution in North Carolina

How Physician Assistant compares to other specialties among North Carolina providers

North Carolina providers

Physician Assistant share within North Carolina

1. Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Physician Assistant share within North Carolina

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Physician Assistant) — 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).

CYNTHIA AMSTER is a Physician Assistant provider practicing in SANFORD, North Carolina, according to the CMS National Plan and Provider Enumeration System (NPPES). NPI: 1912362724. 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.

CYNTHIA AMSTER appears in the CMS NPPES registry as a Physician Assistant provider at 1413 GREENWAY CT, SANFORD, NC, 27330, with a listed phone of (919) 292-1201. NPI 1912362724 was issued on 12/21/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AMSTER 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 2,515 prescription claims written by this provider, covering 403 Medicare beneficiaries and totaling roughly $996K in drug spend, split 51% brand-name and 49% 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.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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

1413 GREENWAY CT
SANFORD, NC 27330

Provider Details

NPI 1912362724
Specialty Physician Assistant
Gender Female
NPI Issued 12/21/2015

Hospital and facility affiliations

Facilities where CYNTHIA AMSTER 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.

WAKEMED SPECIALISTS GROUP LLC
RALEIGH, NC

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

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 CYNTHIA AMSTER. Source: openpaymentsdata.cms.gov.

Total received

$548

Largest payer

AstraZeneca Pharmaceuticals LP

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.

Brand vs generic prescribing mix · Brand-heavy

CYNTHIA AMSTER — brand share 51.0%
Specialty average (est.)

51% brand-name claims vs 49% generic, on 2,515 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.

2,515
Total Claims
$996K
Total Drug Cost
403
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,689
Total Day Supply
101,503
Brand vs Generic
51% brand / 49% generic
Brand Drug Cost
$895K
Antibiotic Claims
148

Patient Demographics

Average Patient Age
73.2 years
Avg HCC Risk Score
1.99
Gender Split
63% female / 37% male
Age Distribution
<65: 55, 65-74: 165, 75-84: 151, 85+: 32

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Albuterol Sulfate Hfa
Albuterol Sulfate
390
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
356
Anoro Ellipta
Umeclidinium Brm/Vilanterol Tr
185
Prednisone
154
Montelukast Sodium
135
Omeprazole
125
Azithromycin
123
Fluticasone Propionate
117
Stiolto Respimat
Tiotropium Br/Olodaterol Hcl
107
Azelastine Hcl
69

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

Physician Assistant Overview

How CYNTHIA AMSTER fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

CYNTHIA AMSTER's 2,515 claims are above the specialty average of 790.

Nearby Physician Assistant Providers in North Carolina

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

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

Frequently Asked Questions

What is CYNTHIA AMSTER's specialty?
CYNTHIA AMSTER specializes in Physician Assistant and practices in SANFORD, North Carolina.
How much does CYNTHIA AMSTER prescribe under Medicare Part D?
In 2023, CYNTHIA AMSTER wrote 2,515 Medicare Part D claims totaling $996K in drug costs for 403 beneficiaries.
Where is CYNTHIA AMSTER located?
CYNTHIA AMSTER is located at 1413 GREENWAY CT, SANFORD, NC, 27330. Phone: (919) 292-1201.
What is CYNTHIA AMSTER's NPI number?
CYNTHIA AMSTER's National Provider Identifier (NPI) is 1912362724, issued on 12/21/2015.
Does CYNTHIA AMSTER prescribe more brand-name or generic drugs?
CYNTHIA AMSTER's prescribing is 51% brand-name and 49% generic drugs by claim count, with $895K in brand drug costs.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does CYNTHIA AMSTER prescribe most often?
Based on 2023 Medicare Part D data, CYNTHIA AMSTER's most frequently prescribed drugs include Albuterol Sulfate Hfa, Trelegy Ellipta, Anoro Ellipta. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CYNTHIA AMSTER accept Medicare?
CYNTHIA AMSTER appears in CMS Medicare data with 2,515 Part D claims and 403 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CYNTHIA AMSTER's credentials?
CYNTHIA AMSTER's NPI is 1912362724. 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