2026 NPPES data Physician Assistant NPI 1780206854 PA
Verify on CMS →

THERESA BIRCHFIELD, PA

Physician Assistant in RENO, Nevada. 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 · 478 beneficiaries · Physician Assistant avg: 790
Generic prescribing
98%
generic claims · 2% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$36.95
2 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: THERESA BIRCHFIELD, PA is a Physician Assistant ([object Object]) practicing in RENO, Nevada with a Medicare Part D prescribing footprint of 1K claims across 478 beneficiaries — 2% brand-name prescribing . Industry payments of $36.95 across 2 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: THERESA BIRCHFIELD, PA filed 1,325 Medicare Part D claims in 2023 across RENO, Nevada. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

THERESA BIRCHFIELD, PA at a glance

Quality data not reported

NPI registry status

Active

Issued 05/12/2020

NPI 1780206854

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

1,325 68% vs specialty avg

2023 prescription claims

Specialty avg: 790

Specialty distribution in Nevada

How Physician Assistant compares to other specialties among Nevada providers

Nevada providers

Physician Assistant share within Nevada

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

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).

THERESA BIRCHFIELD, PA is a Physician Assistant provider practicing in RENO, Nevada, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PA. NPI: 1780206854. 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.

THERESA BIRCHFIELD, PA appears in the CMS NPPES registry as a Physician Assistant provider holding PA credentials at 10735 DOUBLE R BLVD, RENO, NV, 89521, with a listed phone of (775) 852-3624. NPI 1780206854 was issued on 05/12/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BIRCHFIELD 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 1,325 prescription claims written by this provider, covering 478 Medicare beneficiaries and totaling roughly $33K in drug spend, split 2% brand-name and 98% 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

10735 DOUBLE R BLVD
RENO, NV 89521

Provider Details

NPI 1780206854
Specialty Physician Assistant
Credentials PA
Gender Female
NPI Issued 05/12/2020

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 THERESA BIRCHFIELD, PA. Source: openpaymentsdata.cms.gov.

Total received

$37

Largest payer

Regeneron Healthcare Solutions, Inc.

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 · Generic-heavy

THERESA BIRCHFIELD, PA — brand share 2.0%
Specialty average (est.)

2% brand-name claims vs 98% generic, on 1,325 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.

1,325
Total Claims
$33K
Total Drug Cost
478
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,782
Total Day Supply
36,094
Brand vs Generic
2% brand / 98% generic
Brand Drug Cost
$2K
Generic Drug Cost
$31K
Antibiotic Claims
459

Patient Demographics

Average Patient Age
73.7 years
Avg HCC Risk Score
1.09
Gender Split
56% female / 44% male
Age Distribution
<65: 20, 65-74: 247, 75-84: 180, 85+: 31

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Azelastine Hcl
151
Doxycycline Hyclate
145
Alprazolam
126
Cefdinir
124
Fluticasone Propionate
124
Prednisone
78
Methylprednisolone
77
Montelukast Sodium
63
Triamcinolone Acetonide
58
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
57

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

Physician Assistant Overview

How THERESA BIRCHFIELD, PA fits within the Physician Assistant landscape nationally.

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

THERESA BIRCHFIELD, PA's 1,325 claims are above the specialty average of 790.

Nearby Physician Assistant Providers in Nevada

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

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

Frequently Asked Questions

What is THERESA BIRCHFIELD, PA's specialty?
THERESA BIRCHFIELD, PA specializes in Physician Assistant and practices in RENO, Nevada. Credentials: PA.
How much does THERESA BIRCHFIELD, PA prescribe under Medicare Part D?
In 2023, THERESA BIRCHFIELD, PA wrote 1,325 Medicare Part D claims totaling $33K in drug costs for 478 beneficiaries.
Where is THERESA BIRCHFIELD, PA located?
THERESA BIRCHFIELD, PA is located at 10735 DOUBLE R BLVD, RENO, NV, 89521. Phone: (775) 852-3624.
What is THERESA BIRCHFIELD, PA's NPI number?
THERESA BIRCHFIELD, PA's National Provider Identifier (NPI) is 1780206854, issued on 05/12/2020.
Does THERESA BIRCHFIELD, PA prescribe more brand-name or generic drugs?
THERESA BIRCHFIELD, PA's prescribing is 2% brand-name and 98% generic drugs by claim count, with $2K 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 THERESA BIRCHFIELD, PA prescribe most often?
Based on 2023 Medicare Part D data, THERESA BIRCHFIELD, PA's most frequently prescribed drugs include Azelastine Hcl, Doxycycline Hyclate, Alprazolam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does THERESA BIRCHFIELD, PA accept Medicare?
THERESA BIRCHFIELD, PA appears in CMS Medicare data with 1,325 Part D claims and 478 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify THERESA BIRCHFIELD, PA's credentials?
THERESA BIRCHFIELD, PA's NPI is 1780206854 with credentials PA. 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