2026 NPPES data Emergency Medicine Physician NPI 1891746541 MD
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GREGORY HARDERS, MD

Emergency Medicine Physician in KETCHIKAN, Alaska. 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
478
Medicare Part D claims · 315 beneficiaries · Emergency Medicine Physician avg: 352
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
88.5435/100
▲ 5 pts above national avg 83.1 · [object Object]

What the federal data shows

GREGORY HARDERS, MD reported a CMS MIPS final score of 88.5435/100 — above the 83.1 national average — and filed 478 Medicare Part D claims in 2023.

88.5435/100
MIPS score · +5 vs avg
478
Part D claims, 2023
95%
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.

GREGORY HARDERS, MD's MIPS score vs every scored U.S. clinician

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

89 Top 44% higher than 56% 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

Board certification likely (heuristic — not verified)

GREGORY HARDERS, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 4 hospital affiliations — 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 GREGORY HARDERS, MD?

High performer (top quartile)

NPI registry status

Active

Issued 05/15/2006

NPI 1891746541

Primary specialty

Emergency Medicine Physician

High-volume

64,398 US NPIs in this specialty

Medicare Part D claims

478 36% vs specialty avg

2023 prescription claims

Specialty avg: 352

MIPS final score

88.5435/100 5.4435% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Alaska

How Emergency Medicine Physician compares to other specialties among Alaska providers

Alaska providers

Emergency Medicine Physician share within Alaska

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

Medicare quality performance — MIPS

GREGORY HARDERS, MD's 2023 MIPS final score plotted against the Emergency Medicine Physician national average

High performer (top quartile)
MIPS Final Score
88.5435/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Emergency Medicine Physician) — 88.5435/100 vs national avg 83.1

0%100%National avg83%88.5%
MIPS final score (Emergency Medicine Physician) — 88.5435/100 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).

GREGORY HARDERS, MD is a Emergency Medicine Physician provider practicing in KETCHIKAN, Alaska, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1891746541. 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.

GREGORY HARDERS, MD appears in the CMS NPPES registry as a Emergency Medicine Physician provider holding MD credentials at 3100 TONGASS AVE, KETCHIKAN, AK, 99901, with a listed phone of (907) 225-5171. NPI 1891746541 was issued on 05/15/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HARDERS 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 478 prescription claims written by this provider, covering 315 Medicare beneficiaries and totaling roughly $4K in drug spend, split 5% brand-name and 95% generic by claim count, with an opioid prescribing rate of 10.7%. 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 88.5435/100 for the 2023 performance year (Quality 81.3424, Cost 63.8025), compared with the national average of 83.1.

Emergency Medicine Physician is a high-volume specialty nationwide, with 64,398 enrolled providers across 56 states and an average of 352 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

3100 TONGASS AVE
KETCHIKAN, AK 99901

Provider Details

NPI 1891746541
Specialty Emergency Medicine Physician
Credentials MD
Gender Male
NPI Issued 05/15/2006

CMS Quality Score (MIPS)

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

88.5435
Final Score
Avg: 83.1
81.3424
Quality
63.8025
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where GREGORY HARDERS, MD 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.

HAWAII EMERGENCY PHYSICIANS ASSOCIATED INC
WAIMEA, HI
MILE BLUFF MEDICAL CENTER INC
MAUSTON, WI
ROCKCASTLE EMERGENCY GROUP, LLC
MOUNT VERNON, KY
WESTERN VIRGINIA REGIONAL EMERGENCY PHYSICIANS LLC
NORTON, VA

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

Brand vs generic prescribing mix · Generic-heavy

GREGORY HARDERS, MD — brand share 5.0%
Specialty average (est.)

5% brand-name claims vs 95% generic, on 478 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.

478
Total Claims
$4K
Total Drug Cost
315
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
480
Total Day Supply
3,967
Brand vs Generic
5% brand / 95% generic
Brand Drug Cost
$648
Generic Drug Cost
$3K
Opioid Claims
51 (10.7% rate)
Antibiotic Claims
162

Patient Demographics

Average Patient Age
70.1 years
Avg HCC Risk Score
1.48
Gender Split
58% female / 42% male
Age Distribution
<65: 68, 65-74: 130, 75-84: 86, 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
Ibuprofen
57
Prednisone
53
Tramadol Hcl
46
Nitrofurantoin Mono-Macro
Nitrofurantoin Monohyd/M-Cryst
37
Cephalexin
36
Azithromycin
35
Ondansetron Hcl
23
Albuterol Sulfate Hfa
Albuterol Sulfate
22
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
16
Cyclobenzaprine Hcl
16

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

Emergency Medicine Physician Overview

How GREGORY HARDERS, MD fits within the Emergency Medicine Physician landscape nationally.

64,398
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider

GREGORY HARDERS, MD's 478 claims are above the specialty average of 352.

Nearby Emergency Medicine Physician Providers in Alaska

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

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

Frequently Asked Questions

What is GREGORY HARDERS, MD's specialty?
GREGORY HARDERS, MD specializes in Emergency Medicine Physician and practices in KETCHIKAN, Alaska. Credentials: MD.
How much does GREGORY HARDERS, MD prescribe under Medicare Part D?
In 2023, GREGORY HARDERS, MD wrote 478 Medicare Part D claims totaling $4K in drug costs for 315 beneficiaries.
What is GREGORY HARDERS, MD's Medicare quality score?
GREGORY HARDERS, MD has a CMS MIPS Final Score of 88.5435/100 (Quality: 81.3424, Cost: 63.8025). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is GREGORY HARDERS, MD located?
GREGORY HARDERS, MD is located at 3100 TONGASS AVE, KETCHIKAN, AK, 99901. Phone: (907) 225-5171.
What is GREGORY HARDERS, MD's NPI number?
GREGORY HARDERS, MD's National Provider Identifier (NPI) is 1891746541, issued on 05/15/2006.
Does GREGORY HARDERS, MD prescribe more brand-name or generic drugs?
GREGORY HARDERS, MD's prescribing is 5% brand-name and 95% generic drugs by claim count, with $648 in brand drug costs.
Does GREGORY HARDERS, MD prescribe opioids?
Yes, GREGORY HARDERS, MD had 51 opioid claims in 2023 with an opioid prescribing rate of 10.7%.
How many Emergency Medicine Physician providers are there in the US?
There are 64,398 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
What drugs does GREGORY HARDERS, MD prescribe most often?
Based on 2023 Medicare Part D data, GREGORY HARDERS, MD's most frequently prescribed drugs include Ibuprofen, Prednisone, Tramadol Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GREGORY HARDERS, MD accept Medicare?
GREGORY HARDERS, MD appears in CMS Medicare data with 478 Part D claims and 315 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GREGORY HARDERS, MD's credentials?
GREGORY HARDERS, MD's NPI is 1891746541 with credentials MD. 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