2026 NPPES data Internal Medicine Physician NPI 1013414721
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MARC GRANRUD

Internal Medicine Physician in COEUR D ALENE, Idaho. 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
527
Medicare Part D claims · 219 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
94.9134/100
▲ 12 pts above national avg 83.1 · [object Object]

What the federal data shows

MARC GRANRUD reported a CMS MIPS final score of 94.9134/100 — above the 83.1 national average — and filed 527 Medicare Part D claims in 2023.

94.9134/100
MIPS score · +12 vs avg
527
Part D claims, 2023
89%
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.

MARC GRANRUD's MIPS score vs every scored U.S. clinician

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

95 Top 25% higher than 75% 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%). Below this entry. 90–100: 189,403 scored providers (40%). This entry sits in this band. 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)

MARC GRANRUD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — 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 MARC GRANRUD?

High performer (top quartile)

NPI registry status

Active

Issued 04/09/2018

NPI 1013414721

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

527 81% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

MIPS final score

94.9134/100 11.813400000000001% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Idaho

How Internal Medicine Physician compares to other specialties among Idaho providers

Idaho providers

Internal Medicine Physician share within Idaho

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

Medicare quality performance — MIPS

MARC GRANRUD's 2023 MIPS final score plotted against the Internal Medicine Physician national average

High performer (top quartile)
MIPS Final Score
94.9134/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Internal Medicine Physician) — 94.9134/100 vs national avg 83.1

0%100%National avg83%94.9%
MIPS final score (Internal Medicine Physician) — 94.9134/100 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).

MARC GRANRUD appears in the CMS NPPES registry as a Internal Medicine Physician provider at 2003 KOOTENAI HEALTH WAY, COEUR D ALENE, ID, 83814, with a listed phone of (208) 625-6900. NPI 1013414721 was issued on 04/09/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GRANRUD 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 527 prescription claims written by this provider, covering 219 Medicare beneficiaries and totaling roughly $32K in drug spend, split 11% brand-name and 89% generic by claim count, with an opioid prescribing rate of 5.5%. 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 94.9134/100 for the 2023 performance year (Quality 87.8394), 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

2003 KOOTENAI HEALTH WAY
COEUR D ALENE, ID 83814

Provider Details

NPI 1013414721
Specialty Internal Medicine Physician
Gender Male
NPI Issued 04/09/2018

CMS Quality Score (MIPS)

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

94.9134
Final Score
Avg: 83.1
87.8394
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where MARC GRANRUD 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.

KOOTENAI HEALTH INC
OROFINO, ID

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 · Typical

MARC GRANRUD — brand share 11.0%
Specialty average (est.)

11% brand-name claims vs 89% generic, on 527 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.

527
Total Claims
$32K
Total Drug Cost
219
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
594
Total Day Supply
11,941
Brand vs Generic
11% brand / 89% generic
Brand Drug Cost
$25K
Generic Drug Cost
$7K
Opioid Claims
29 (5.5% rate)
Antibiotic Claims
99

Patient Demographics

Average Patient Age
74.4 years
Avg HCC Risk Score
2.34
Gender Split
50% female / 50% male
Age Distribution
<65: 27, 65-74: 73, 75-84: 86, 85+: 33

Top Prescribed Drugs (Medicare Part D)

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

What MARC GRANRUD 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
Prednisone
39
Pantoprazole Sodium
34
Metoprolol Succinate
26
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
24
Levofloxacin
21
Oxycodone Hcl
21
Albuterol Sulfate Hfa
Albuterol Sulfate
16
Clopidogrel
Clopidogrel Bisulfate
14
Furosemide
14
Losartan Potassium
13

* 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 MARC GRANRUD 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

MARC GRANRUD's 527 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Idaho

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

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

Frequently Asked Questions

What is MARC GRANRUD's specialty?
MARC GRANRUD specializes in Internal Medicine Physician and practices in COEUR D ALENE, Idaho.
How much does MARC GRANRUD prescribe under Medicare Part D?
In 2023, MARC GRANRUD wrote 527 Medicare Part D claims totaling $32K in drug costs for 219 beneficiaries.
What is MARC GRANRUD's Medicare quality score?
MARC GRANRUD has a CMS MIPS Final Score of 94.9134/100 (Quality: 87.8394). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is MARC GRANRUD located?
MARC GRANRUD is located at 2003 KOOTENAI HEALTH WAY, COEUR D ALENE, ID, 83814. Phone: (208) 625-6900.
What is MARC GRANRUD's NPI number?
MARC GRANRUD's National Provider Identifier (NPI) is 1013414721, issued on 04/09/2018.
Does MARC GRANRUD prescribe more brand-name or generic drugs?
MARC GRANRUD's prescribing is 11% brand-name and 89% generic drugs by claim count, with $25K in brand drug costs.
Does MARC GRANRUD prescribe opioids?
Yes, MARC GRANRUD had 29 opioid claims in 2023 with an opioid prescribing rate of 5.5%.
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 MARC GRANRUD prescribe most often?
Based on 2023 Medicare Part D data, MARC GRANRUD's most frequently prescribed drugs include Prednisone, Pantoprazole Sodium, Metoprolol Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARC GRANRUD accept Medicare?
MARC GRANRUD appears in CMS Medicare data with 527 Part D claims and 219 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARC GRANRUD's credentials?
MARC GRANRUD's NPI is 1013414721. 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