2026 NPPES data Internal Medicine Physician NPI 1801808258 PA
Verify on CMS →

JOHN GARNER, PA

Internal Medicine Physician in BEAUFORT, 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
9K
Medicare Part D claims · 593 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
75.3068/100
▼ 8 pts below national avg 83.1 · [object Object]
Industry payments
$21.88
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

JOHN GARNER, PA reported a CMS MIPS final score of 75.3068/100 — below the 83.1 national average — and filed 8,904 Medicare Part D claims in 2023.

75.3068/100
MIPS score · -8 vs avg
9K
Part D claims, 2023
87%
generic prescribing
Likely
board-certified (heuristic)

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.

JOHN GARNER, PA's MIPS score vs every scored U.S. clinician

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

75 15th percentile higher than 15% 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%). This entry sits in this band. 80–90: 129,887 scored providers (27%). Above this entry. 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

Board certification likely (heuristic — not verified)

JOHN GARNER, PA practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about JOHN GARNER, PA?

Below national average

NPI registry status

Active

Issued 08/13/2006

NPI 1801808258

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

8,904 228% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

MIPS final score

75.3068/100 7.793199999999999% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in South Carolina

How Internal Medicine Physician compares to other specialties among South Carolina providers

South Carolina providers

Internal Medicine Physician share within South Carolina

1. Internal Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Internal Medicine Physician share within South Carolina

Medicare quality performance — MIPS

JOHN GARNER, PA's 2023 MIPS final score plotted against the Internal Medicine Physician national average

Below national average
MIPS Final Score
75.3068/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Internal Medicine Physician) — 75.3068/100 vs national avg 83.1

0%100%National avg83%75.3%
MIPS final score (Internal Medicine Physician) — 75.3068/100 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).

JOHN GARNER, PA appears in the CMS NPPES registry as a Internal Medicine Physician provider holding PA credentials at 9 RUE DU BOIS # A, BEAUFORT, SC, 29907, with a listed phone of (843) 524-0558. NPI 1801808258 was issued on 08/13/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GARNER 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 8,904 prescription claims written by this provider, covering 593 Medicare beneficiaries and totaling roughly $860K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 2.1%. 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 75.3068/100 for the 2023 performance year (Quality 64.7556, Cost 53.7669), compared with the national average of 83.1.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

9 RUE DU BOIS # A
BEAUFORT, SC 29907

Provider Details

NPI 1801808258
Specialty Internal Medicine Physician
Credentials PA
Gender Male
NPI Issued 08/13/2006

CMS Quality Score (MIPS)

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

75.3068
Final Score
Avg: 83.1
64.7556
Quality
53.7669
Cost
99
Promoting Interoperability

Reporting: Group practice

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 JOHN GARNER, PA. Source: openpaymentsdata.cms.gov.

Total received

$22

Largest payer

Boston Scientific 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.

Brand vs generic prescribing mix · Typical

JOHN GARNER, PA — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 8,904 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.

8,904
Total Claims
$860K
Total Drug Cost
593
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
18,324
Total Day Supply
523,003
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$704K
Generic Drug Cost
$149K
Opioid Claims
187 (2.1% rate)
Antibiotic Claims
286

Patient Demographics

Average Patient Age
72.5 years
Avg HCC Risk Score
1.24
Gender Split
58% female / 42% male
Age Distribution
<65: 70, 65-74: 285, 75-84: 182, 85+: 56

Top Prescribed Drugs (Medicare Part D)

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

What JOHN GARNER, 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
Amlodipine Besylate
408
Gabapentin
258
Omeprazole
257
Atorvastatin Calcium
239
Lisinopril
239
Losartan Potassium
234
Metformin Hcl
219
Furosemide
207
Prednisone
200
Albuterol Sulfate Hfa
Albuterol Sulfate
199

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

Internal Medicine Physician Overview

How JOHN GARNER, PA fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

JOHN GARNER, PA's 8,904 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in South Carolina

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

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JOHN GARNER, PA's specialty?
JOHN GARNER, PA specializes in Internal Medicine Physician and practices in BEAUFORT, South Carolina. Credentials: PA.
How much does JOHN GARNER, PA prescribe under Medicare Part D?
In 2023, JOHN GARNER, PA wrote 8,904 Medicare Part D claims totaling $860K in drug costs for 593 beneficiaries.
What is JOHN GARNER, PA's Medicare quality score?
JOHN GARNER, PA has a CMS MIPS Final Score of 75.3068/100 (Quality: 64.7556, Cost: 53.7669). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is JOHN GARNER, PA located?
JOHN GARNER, PA is located at 9 RUE DU BOIS # A, BEAUFORT, SC, 29907. Phone: (843) 524-0558.
What is JOHN GARNER, PA's NPI number?
JOHN GARNER, PA's National Provider Identifier (NPI) is 1801808258, issued on 08/13/2006.
Does JOHN GARNER, PA prescribe more brand-name or generic drugs?
JOHN GARNER, PA's prescribing is 13% brand-name and 87% generic drugs by claim count, with $704K in brand drug costs.
Does JOHN GARNER, PA prescribe opioids?
Yes, JOHN GARNER, PA had 187 opioid claims in 2023 with an opioid prescribing rate of 2.1%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does JOHN GARNER, PA prescribe most often?
Based on 2023 Medicare Part D data, JOHN GARNER, PA's most frequently prescribed drugs include Amlodipine Besylate, Gabapentin, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOHN GARNER, PA accept Medicare?
JOHN GARNER, PA appears in CMS Medicare data with 8,904 Part D claims and 593 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOHN GARNER, PA's credentials?
JOHN GARNER, PA's NPI is 1801808258 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