NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1174577589 MD
Verify on CMS → Christopher Corsi, MD
Endocrinology, Diabetes & Metabolism Physician in Missoula, Montana.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 7,871 in Endocrinology, Diabetes & Metabolism Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
3K
Medicare Part D claims · 415 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
55%
generic claims · 39% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
85.4/100
▲ 2 pts above national avg 83.1 · Above neutral
Industry payments
$115.38
2 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Christopher Corsi, MD reported a CMS MIPS final score of 85.4/100 - above the 83.1 national average - and filed 3,312 Medicare Part D claims in 2023.
- 85.4/100
- MIPS score · +2 vs avg
- 3K
- Part D claims, 2023
- 55%
- 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.
Christopher Corsi, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
85 49th percentile higher than 49% of 477,587 scored providers
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
Where Christopher Corsi, MD sits
This provider among endocrinology, diabetes & metabolism physician peers
Across the 2,521 endocrinology, diabetes & metabolism physician providers who report both Medicare Part D prescribing and a MIPS quality score, Christopher Corsi, MD writes more Part D claims than 62% of them and scores higher on MIPS quality than 53% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one endocrinology, diabetes & metabolism physician peer from a representative sample of 60; the gold marker is Christopher Corsi, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Christopher Corsi, MD 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 Christopher Corsi, MD?
High performer (top quartile)Primary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
3,312 26% vs specialty avg
MIPS final score
85.4/100 2.3 pts vs avg
Specialty distribution in Montana
How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Montana providers
Medicare quality performance, MIPS
Christopher Corsi, MD's 2023 MIPS final score plotted against the Endocrinology, Diabetes & Metabolism Physician national average
- MIPS Final Score
- 85.4/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Endocrinology, Diabetes & Metabolism Physician) - 85.4/100 vs national avg 83.1
How MIPS and board certification work
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).
Christopher Corsi, MD appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding MD credentials at 900 N ORANGE ST STE 304, Missoula, MT, 59802, with a listed phone of (406) 329-5781. NPI 1174577589 was issued on 05/20/2006.
Medicare Part D records for calendar year 2023 show 3,312 prescription claims written by this provider, covering 415 Medicare beneficiaries and totaling roughly $1.4 million in drug spend, split 39% brand-name and 55% generic by claim count, with an opioid prescribing rate of 0.8%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 85.4/100 for the 2023 performance year (Quality 86, Cost 65.5), compared with the national average of 83.1.
Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,871 enrolled providers across 54 states and an average of 2,639 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
Provider Details
| NPI | 1174577589 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/20/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
85.4319
Final Score
Avg: 83.1
85.9823
Quality
65.4573
Cost
100
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 Christopher Corsi, MD. Source: openpaymentsdata.cms.gov.
Total received
$115
Largest payer
Amgen Inc.
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 · Above average
Christopher Corsi, MD - brand share 39.0%
Endocrinology, Diabetes & Metabolism Physician average
39% brand-name claims vs 55% generic, on 3,312 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.
3,312
Total Claims
$1.4M
Total Drug Cost
415
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 7,530
- Total Day Supply
- 222,262
- Brand vs Generic
- 39% brand / 55% generic
- Brand Drug Cost
- $1.3M
- Generic Drug Cost
- $47K
- Opioid Claims
- 28 (0.8% rate)
Patient Demographics
- Average Patient Age
- 70.5 years
- Avg HCC Risk Score
- 1.35
- Gender Split
- 65% female / 35% male
- Age Distribution
- <65: 58, 65-74: 213, 75-84: 130, 85+: 14
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Christopher Corsi, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
673 claims
- Liothyronine Sodium 109
Liothyronine Sodium
109 claims
- Novolog Flexpen 109
Novolog Flexpen
109 claims
- Hydrocortisone 93
Hydrocortisone
93 claims
- Synthroid 91
Synthroid
91 claims
- Metformin Hcl 84
Metformin Hcl
84 claims
- Jardiance 83
Jardiance
83 claims
- Methimazole 74
Methimazole
74 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 673 |
| Liothyronine Sodium | 109 |
| Novolog Flexpen Insulin Aspart | 109 |
| Hydrocortisone | 93 |
| Synthroid Levothyroxine Sodium | 91 |
| Metformin Hcl | 84 |
| Jardiance Empagliflozin | 83 |
| Methimazole | 74 |
| Losartan Potassium | 62 |
| Ozempic Semaglutide | 57 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Endocrinology, Diabetes & Metabolism Physician in MT →
All providers in Montana →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Christopher Corsi, MD fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
7,871
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider
Christopher Corsi, MD's 3,312 claims are above the specialty average of 2,639.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Montana
Other clinicians with the same primary specialty enrolled in Montana, drawn from the same CMS NPPES roster as Corsi.
Dr. Samah Abu Omar
MD
Bozeman, MT
Dr. Rino Buzzola
M.D.
Missoula, MT
Dr. Reed Christensen
M.D.
Billings, MT
Dr. Barry Cohan
M.D.
Great Falls, MT
Dr. Michele Danicich
MD
Missoula, MT
Compare Endocrinology, Diabetes & Metabolism Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Montana medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Endocrinology, Diabetes & Metabolism Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Christopher Corsi, MD's specialty? ▼
Christopher Corsi, MD specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Missoula, Montana. Credentials: MD.
How much does Christopher Corsi, MD prescribe under Medicare Part D? ▼
In 2023, Christopher Corsi, MD wrote 3,312 Medicare Part D claims totaling $1.4M in drug costs for 415 beneficiaries.
What is Christopher Corsi, MD's Medicare quality score? ▼
Christopher Corsi, MD has a CMS MIPS Final Score of 85.4/100 (Quality: 86, Cost: 65.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Christopher Corsi, MD located? ▼
Christopher Corsi, MD is located at 900 N ORANGE ST STE 304, Missoula, MT, 59802. Phone: (406) 329-5781.
What is Christopher Corsi, MD's NPI number? ▼
Christopher Corsi, MD's National Provider Identifier (NPI) is 1174577589, issued on 05/20/2006.
Does Christopher Corsi, MD prescribe more brand-name or generic drugs? ▼
Christopher Corsi, MD's prescribing is 39% brand-name and 55% generic drugs by claim count, with $1.3M in brand drug costs.
Does Christopher Corsi, MD prescribe opioids? ▼
Yes, Christopher Corsi, MD had 28 opioid claims in 2023 with an opioid prescribing rate of 0.8%.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 7,871 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does Christopher Corsi, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Christopher Corsi, MD's most frequently prescribed drugs include Levothyroxine Sodium, Liothyronine Sodium, Novolog Flexpen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Christopher Corsi, MD accept Medicare? ▼
Christopher Corsi, MD appears in CMS Medicare data with 3,312 Part D claims and 415 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Christopher Corsi, MD's credentials? ▼
Christopher Corsi, MD's NPI is 1174577589 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
View source datasets and methodology notes
- 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
Compiled from official public sources by the PlainDoctor editorial team.