2026 NPPES data Sleep Medicine (Internal Medicine) Physician NPI 1356497150 M.D.
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CHARLES GENSMER, M.D.

Sleep Medicine (Internal Medicine) Physician in COON RAPIDS, Minnesota. 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
2K
Medicare Part D claims · 379 beneficiaries · Sleep Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
46%
generic claims · 54% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
83.5331/100
▲ 0 pts above national avg 83.1 · [object Object]

What the federal data shows

CHARLES GENSMER, M.D. reported a CMS MIPS final score of 83.5331/100 — above the 83.1 national average — and filed 2,114 Medicare Part D claims in 2023.

83.5331/100
MIPS score · +0 vs avg
2K
Part D claims, 2023
46%
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.

CHARLES GENSMER, M.D.'s MIPS score vs every scored U.S. clinician

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

84 42nd percentile higher than 42% 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)

CHARLES GENSMER, M.D. 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 CHARLES GENSMER, M.D.?

Near national average

NPI registry status

Active

Issued 01/25/2007

NPI 1356497150

Primary specialty

Sleep Medicine (Internal Medicine) Physician

Niche

857 US NPIs in this specialty

Medicare Part D claims

2,114 61% vs specialty avg

2023 prescription claims

Specialty avg: 1,310

MIPS final score

83.5331/100 0.43310000000001025% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Minnesota

How Sleep Medicine (Internal Medicine) Physician compares to other specialties among Minnesota providers

Minnesota providers

Sleep Medicine (Internal Medicine) Physician share within Minnesota

1. Sleep Medicine (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Sleep Medicine (Internal Medicine) Physician share within Minnesota

Medicare quality performance — MIPS

CHARLES GENSMER, M.D.'s 2023 MIPS final score plotted against the Sleep Medicine (Internal Medicine) Physician national average

Near national average
MIPS Final Score
83.5331/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Sleep Medicine (Internal Medicine) Physician) — 83.5331/100 vs national avg 83.1

0%100%National avg83%83.5%
MIPS final score (Sleep Medicine (Internal Medicine) Physician) — 83.5331/100 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).

CHARLES GENSMER, M.D. appears in the CMS NPPES registry as a Sleep Medicine (Internal Medicine) Physician provider holding M.D. credentials at 4050 COON RAPIDS BLVD NW, COON RAPIDS, MN, 55433, with a listed phone of (763) 236-8992. NPI 1356497150 was issued on 01/25/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GENSMER 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 2,114 prescription claims written by this provider, covering 379 Medicare beneficiaries and totaling roughly $746K in drug spend, split 54% brand-name and 46% 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 83.5331/100 for the 2023 performance year (Quality 81.7967, Cost 63.3136), compared with the national average of 83.1.

Sleep Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 857 enrolled providers across 52 states and an average of 1,310 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

4050 COON RAPIDS BLVD NW
COON RAPIDS, MN 55433

Provider Details

NPI 1356497150
Specialty Sleep Medicine (Internal Medicine) Physician
Credentials M.D.
Gender Male
NPI Issued 01/25/2007

CMS Quality Score (MIPS)

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

83.5331
Final Score
Avg: 83.1
81.7967
Quality
63.3136
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where CHARLES GENSMER, M.D. 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.

ALLINA HEALTH SYSTEM
ANNANDALE, MN

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 · Brand-heavy

CHARLES GENSMER, M.D. — brand share 54.0%
Specialty average (est.)

54% brand-name claims vs 46% generic, on 2,114 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.

2,114
Total Claims
$746K
Total Drug Cost
379
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,594
Total Day Supply
103,502
Brand vs Generic
54% brand / 46% generic
Brand Drug Cost
$700K
Generic Drug Cost
$47K
Antibiotic Claims
274

Patient Demographics

Average Patient Age
72.6 years
Avg HCC Risk Score
1.69
Gender Split
57% female / 43% male
Age Distribution
<65: 40, 65-74: 176, 75-84: 139, 85+: 24

Top Prescribed Drugs (Medicare Part D)

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

What CHARLES GENSMER, M.D. 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
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
398
Montelukast Sodium
241
Azithromycin
223
Albuterol Sulfate Hfa
Albuterol Sulfate
187
Breo Ellipta
Fluticasone/Vilanterol
167
Prednisone
93
Dulera
Mometasone/Formoterol
66
Ventolin Hfa
Albuterol Sulfate
66
Fluticasone-Salmeterol
Fluticasone Propion/Salmeterol
53
Symbicort
Budesonide/Formoterol Fumarate
51

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

Sleep Medicine (Internal Medicine) Physician Overview

How CHARLES GENSMER, M.D. fits within the Sleep Medicine (Internal Medicine) Physician landscape nationally.

857
Sleep Medicine (Internal Medicine) Physician Providers in US
52
States with Sleep Medicine (Internal Medicine) Physician
1,310
Avg Claims per Provider

CHARLES GENSMER, M.D.'s 2,114 claims are above the specialty average of 1,310.

Nearby Sleep Medicine (Internal Medicine) Physician Providers in Minnesota

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

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

Frequently Asked Questions

What is CHARLES GENSMER, M.D.'s specialty?
CHARLES GENSMER, M.D. specializes in Sleep Medicine (Internal Medicine) Physician and practices in COON RAPIDS, Minnesota. Credentials: M.D..
How much does CHARLES GENSMER, M.D. prescribe under Medicare Part D?
In 2023, CHARLES GENSMER, M.D. wrote 2,114 Medicare Part D claims totaling $746K in drug costs for 379 beneficiaries.
What is CHARLES GENSMER, M.D.'s Medicare quality score?
CHARLES GENSMER, M.D. has a CMS MIPS Final Score of 83.5331/100 (Quality: 81.7967, Cost: 63.3136). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is CHARLES GENSMER, M.D. located?
CHARLES GENSMER, M.D. is located at 4050 COON RAPIDS BLVD NW, COON RAPIDS, MN, 55433. Phone: (763) 236-8992.
What is CHARLES GENSMER, M.D.'s NPI number?
CHARLES GENSMER, M.D.'s National Provider Identifier (NPI) is 1356497150, issued on 01/25/2007.
Does CHARLES GENSMER, M.D. prescribe more brand-name or generic drugs?
CHARLES GENSMER, M.D.'s prescribing is 54% brand-name and 46% generic drugs by claim count, with $700K in brand drug costs.
How many Sleep Medicine (Internal Medicine) Physician providers are there in the US?
There are 857 Sleep Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Sleep Medicine (Internal Medicine) Physician provider writes 1,310 Medicare Part D claims per year.
What drugs does CHARLES GENSMER, M.D. prescribe most often?
Based on 2023 Medicare Part D data, CHARLES GENSMER, M.D.'s most frequently prescribed drugs include Trelegy Ellipta, Montelukast Sodium, Azithromycin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CHARLES GENSMER, M.D. accept Medicare?
CHARLES GENSMER, M.D. appears in CMS Medicare data with 2,114 Part D claims and 379 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CHARLES GENSMER, M.D.'s credentials?
CHARLES GENSMER, M.D.'s NPI is 1356497150 with credentials M.D.. 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