2026 NPPES data Physician Assistant NPI 1861904476 PA-C
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Tia Chase, PA-C

Physician Assistant in Huron, South Dakota. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers — including 149,975 in Physician Assistant, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration — see our methodology.

Federal data — no proprietary rating. We show these CMS records as-is — no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
2K
Medicare Part D claims · 145 beneficiaries · Physician Assistant avg: 790
Generic prescribing
87%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.0K
57 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Tia Chase, PA-C filed 2,212 Medicare Part D claims in 2023 as a Physician Assistant in Huron, South Dakota, prescribing 87% generic.

2K
Part D claims, 2023
87%
generic prescribing
$1.0K
industry payments (Sunshine Act)

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.

Tia Chase, PA-C's Medicare Part D volume vs every U.S. prescriber

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

2,212 Top 15% higher than 85% of 1,370,886 prescribers

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

What does the federal data show about Tia Chase, PA-C?

Quality data not reported

NPI registry status

Active

Issued 11/05/2017

NPI 1861904476

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

2,212 180% vs specialty avg

2023 prescription claims

Specialty avg: 790

Specialty distribution in South Dakota

How Physician Assistant compares to other specialties among South Dakota providers

South Dakota providers

Largest specialties in South Dakota (% of in-state providers)

Physical Therapist — 5.6%Physical Therapist5.6%Pharmacist — 5.5%Pharmacist5.5%Registered Nurse — 4.8%Registered Nurse4.8%Family Nurse Practitioner — 4.7%Family Nurse Practitioner4.7%Mental Health Counselor — 4%Mental Health Counselor4%Physician Assistant — 3.7%Physician Assistant3.7%
Largest specialties in South Dakota (% of in-state providers)

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).

Tia Chase, PA-C appears in the CMS NPPES registry as a Physician Assistant provider holding PA-C credentials at 111 4TH ST SE, Huron, SD, 57350, with a listed phone of (605) 352-8691. NPI 1861904476 was issued on 11/05/2017. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Chase 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 2,212 prescription claims written by this provider, covering 145 Medicare beneficiaries and totaling roughly $174K in drug spend, split 11% brand-name and 87% generic by claim count, with an opioid prescribing rate of 4.8%. 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

111 4TH ST SE
Huron, SD 57350

Provider Details

NPI 1861904476
Specialty Physician Assistant
Credentials PA-C
Gender Female
NPI Issued 11/05/2017

Hospital and facility affiliations

Facilities where Tia Chase, PA-C 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.

Horizon Health Care Inc
Huron, SD

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 Tia Chase, PA-C. Source: openpaymentsdata.cms.gov.

Total received

$1.0K

Largest payer

Lilly USA, LLC

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 · Typical

Tia Chase, PA-C — brand share 11.0%
Physician Assistant average

11% brand-name claims vs 87% generic, on 2,212 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.

2,212
Total Claims
$174K
Total Drug Cost
145
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,729
Total Day Supply
103,211
Brand vs Generic
11% brand / 87% generic
Brand Drug Cost
$141K
Generic Drug Cost
$31K
Opioid Claims
107 (4.8% rate)
Antibiotic Claims
126

Patient Demographics

Average Patient Age
69.8 years
Avg HCC Risk Score
0.93
Gender Split
56% female / 44% male
Age Distribution
<65: 29, 65-74: 75, 75-84: 25, 85+: 16

Top Prescribed Drugs (Medicare Part D)

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

What Tia Chase, PA-C prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Losartan Potassium
83
Levothyroxine Sodium
81
Atorvastatin Calcium
70
Lisinopril
70
Omeprazole
67
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
61
Metformin Hcl
57
Hydrochlorothiazide
55
Amlodipine Besylate
53
Rosuvastatin Calcium
53

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

Physician Assistant Overview

How Tia Chase, PA-C fits within the Physician Assistant landscape nationally.

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

Tia Chase, PA-C's 2,212 claims are above the specialty average of 790.

Nearby Physician Assistant Providers in South Dakota

Other clinicians with the same primary specialty enrolled in South Dakota, drawn from the same CMS NPPES roster as Chase.

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

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry — providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the South Dakota medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Physician Assistant peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only — they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Tia Chase, PA-C's specialty?
Tia Chase, PA-C specializes in Physician Assistant and practices in Huron, South Dakota. Credentials: PA-C.
How much does Tia Chase, PA-C prescribe under Medicare Part D?
In 2023, Tia Chase, PA-C wrote 2,212 Medicare Part D claims totaling $174K in drug costs for 145 beneficiaries.
Where is Tia Chase, PA-C located?
Tia Chase, PA-C is located at 111 4TH ST SE, Huron, SD, 57350. Phone: (605) 352-8691.
What is Tia Chase, PA-C's NPI number?
Tia Chase, PA-C's National Provider Identifier (NPI) is 1861904476, issued on 11/05/2017.
Does Tia Chase, PA-C prescribe more brand-name or generic drugs?
Tia Chase, PA-C's prescribing is 11% brand-name and 87% generic drugs by claim count, with $141K in brand drug costs.
Does Tia Chase, PA-C prescribe opioids?
Yes, Tia Chase, PA-C had 107 opioid claims in 2023 with an opioid prescribing rate of 4.8%.
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 Tia Chase, PA-C prescribe most often?
Based on 2023 Medicare Part D data, Tia Chase, PA-C's most frequently prescribed drugs include Losartan Potassium, Levothyroxine Sodium, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Tia Chase, PA-C accept Medicare?
Tia Chase, PA-C appears in CMS Medicare data with 2,212 Part D claims and 145 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Tia Chase, PA-C's credentials?
Tia Chase, PA-C's NPI is 1861904476 with credentials PA-C. 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

Compiled from official public sources by the PlainDoctor editorial team.