2026 NPPES data Physician Assistant NPI 1699311019 PA
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BRITTANY DIEFFENBACH, PA

Physician Assistant in GEORGETOWN, South 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
429
Medicare Part D claims · 186 beneficiaries · Physician Assistant avg: 790
MIPS score
81.9021/100
▼ 1 pts below national avg 83.1 · [object Object]
Industry payments
$660.08
5 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

BRITTANY DIEFFENBACH, PA reported a CMS MIPS final score of 81.9021/100 — below the 83.1 national average — and filed 429 Medicare Part D claims in 2023.

81.9021/100
MIPS score · -1 vs avg
429
Part D claims, 2023
$660.08
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.

BRITTANY DIEFFENBACH, PA's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

82 36th percentile higher than 36% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

What does the federal data show about BRITTANY DIEFFENBACH, PA?

Near national average

NPI registry status

Active

Issued 11/20/2019

NPI 1699311019

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

429 46% vs specialty avg

2023 prescription claims

Specialty avg: 790

MIPS final score

81.9021/100 1.19789999999999% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in South Carolina

How Physician Assistant compares to other specialties among South Carolina providers

South Carolina providers

Physician Assistant share within South Carolina

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

Medicare quality performance — MIPS

BRITTANY DIEFFENBACH, PA's 2023 MIPS final score plotted against the Physician Assistant national average

Near national average
MIPS Final Score
81.9021/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Physician Assistant) — 81.9021/100 vs national avg 83.1

0%100%National avg83%81.9%
MIPS final score (Physician Assistant) — 81.9021/100 vs national avg 83.1

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).

BRITTANY DIEFFENBACH, PA appears in the CMS NPPES registry as a Physician Assistant provider holding PA credentials at 2185 N FRASER ST, GEORGETOWN, SC, 29440, with a listed phone of (842) 527-1800. NPI 1699311019 was issued on 11/20/2019. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DIEFFENBACH 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 429 prescription claims written by this provider, covering 186 Medicare beneficiaries and totaling roughly $3K in drug spend, with an opioid prescribing rate of 29.8%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 81.9021/100 for the 2023 performance year (Quality 78.7681, Cost 61.7388), compared with the national average of 83.1.

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

2185 N FRASER ST
GEORGETOWN, SC 29440

Provider Details

NPI 1699311019
Specialty Physician Assistant
Credentials PA
Gender Female
NPI Issued 11/20/2019

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

81.9021
Final Score
Avg: 83.1
78.7681
Quality
61.7388
Cost
99
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where BRITTANY DIEFFENBACH, PA 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.

GEORGETOWN PHYSICIAN ASSOCIATES, LLC
MURRELLS INLET, SC

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 BRITTANY DIEFFENBACH, PA. Source: openpaymentsdata.cms.gov.

Total received

$660

Largest payer

Stryker Corporation

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.

Medicare Part D Prescribing Data

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

429
Total Claims
$3K
Total Drug Cost
186
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
446
Total Day Supply
8,182
Generic Drug Cost
$3K
Opioid Claims
128 (29.8% rate)
Antibiotic Claims
13

Patient Demographics

Average Patient Age
71.3 years
Avg HCC Risk Score
1.06
Gender Split
76% female / 24% male

Top Prescribed Drugs (Medicare Part D)

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

What BRITTANY DIEFFENBACH, PA 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
Meloxicam
87
Naproxen
65
Tramadol Hcl
59
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
40
Methylprednisolone
36
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
28
Ibuprofen
19
Gabapentin
18
Celecoxib
16
Promethazine Hcl
15

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

Physician Assistant Overview

How BRITTANY DIEFFENBACH, 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

BRITTANY DIEFFENBACH, PA's 429 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in South Carolina

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

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

Frequently Asked Questions

What is BRITTANY DIEFFENBACH, PA's specialty?
BRITTANY DIEFFENBACH, PA specializes in Physician Assistant and practices in GEORGETOWN, South Carolina. Credentials: PA.
How much does BRITTANY DIEFFENBACH, PA prescribe under Medicare Part D?
In 2023, BRITTANY DIEFFENBACH, PA wrote 429 Medicare Part D claims totaling $3K in drug costs for 186 beneficiaries.
What is BRITTANY DIEFFENBACH, PA's Medicare quality score?
BRITTANY DIEFFENBACH, PA has a CMS MIPS Final Score of 81.9021/100 (Quality: 78.7681, Cost: 61.7388). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is BRITTANY DIEFFENBACH, PA located?
BRITTANY DIEFFENBACH, PA is located at 2185 N FRASER ST, GEORGETOWN, SC, 29440. Phone: (842) 527-1800.
What is BRITTANY DIEFFENBACH, PA's NPI number?
BRITTANY DIEFFENBACH, PA's National Provider Identifier (NPI) is 1699311019, issued on 11/20/2019.
Does BRITTANY DIEFFENBACH, PA prescribe opioids?
Yes, BRITTANY DIEFFENBACH, PA had 128 opioid claims in 2023 with an opioid prescribing rate of 29.8%.
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 BRITTANY DIEFFENBACH, PA prescribe most often?
Based on 2023 Medicare Part D data, BRITTANY DIEFFENBACH, PA's most frequently prescribed drugs include Meloxicam, Naproxen, Tramadol Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does BRITTANY DIEFFENBACH, PA accept Medicare?
BRITTANY DIEFFENBACH, PA appears in CMS Medicare data with 429 Part D claims and 186 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify BRITTANY DIEFFENBACH, PA's credentials?
BRITTANY DIEFFENBACH, PA's NPI is 1699311019 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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