NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1740360619 MD
Verify on CMS → John Lake, MD
Gastroenterology Physician in Minneapolis, Minnesota.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,567 in Gastroenterology 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
2K
Medicare Part D claims · 315 beneficiaries · Gastroenterology Physician avg: 833
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
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
John Lake, MD filed 2,449 Medicare Part D claims in 2023 as a Gastroenterology Physician in Minneapolis, Minnesota, prescribing 91% generic.
- 2K
- Part D claims, 2023
- 91%
- 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 Lake, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,449 Top 14% higher than 86% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
John Lake, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 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 John Lake, MD?
Quality data not reportedPrimary specialty
Gastroenterology Physician
Medicare Part D claims
2,449 194% vs specialty avg
Specialty distribution in Minnesota
How Gastroenterology Physician compares to other specialties among Minnesota providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Gastroenterology Physician. Verify directly:
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).
John Lake, MD appears in the CMS NPPES registry as a Gastroenterology Physician provider holding MD credentials at UNIVERSITY OF MINNESOTA PHYSICIANS, Minneapolis, MN, 55454, with a listed phone of (612) 626-6100. NPI 1740360619 was issued on 10/16/2006.
Medicare Part D records for calendar year 2023 show 2,449 prescription claims written by this provider, covering 315 Medicare beneficiaries and totaling roughly $865K in drug spend, split 9% brand-name and 91% generic by claim count, with an opioid prescribing rate of 0.4%.
Gastroenterology Physician is a mid-sized specialty nationwide, with 16,567 enrolled providers across 54 states and an average of 833 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 | 1740360619 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 10/16/2006 |
Hospital and facility affiliations
Facilities where John Lake, 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.
Fairview Express Care
Minneapolis, MN
The Duluth Clinic Ltd
Duluth, 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 · Generic-heavy
John Lake, MD - brand share 9.0%
Gastroenterology Physician average
9% brand-name claims vs 91% generic, on 2,449 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.
2,449
Total Claims
$865K
Total Drug Cost
315
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,395
- Total Day Supply
- 159,881
- Brand vs Generic
- 9% brand / 91% generic
- Brand Drug Cost
- $448K
- Generic Drug Cost
- $417K
- Opioid Claims
- 11 (0.4% rate)
- Antibiotic Claims
- 126
Patient Demographics
- Average Patient Age
- 68.9 years
- Avg HCC Risk Score
- 2.96
- Gender Split
- 47% female / 53% male
- Age Distribution
- <65: 64, 65-74: 178, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What John Lake, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Ursodiol
Ursodiol
338 claims
- Tacrolimus
Tacrolimus
323 claims
- Prednisone
Prednisone
227 claims
- Mycophenolate Mofe…
Mycophenolate Mofetil
169 claims
- Spironolactone 77
Spironolactone
77 claims
- Furosemide 67
Furosemide
67 claims
- Azathioprine 66
Azathioprine
66 claims
- Omeprazole 62
Omeprazole
62 claims
| Drug | Claims |
|---|---|
| Ursodiol | 338 |
| Tacrolimus | 323 |
| Prednisone | 227 |
| Mycophenolate Mofetil | 169 |
| Spironolactone | 77 |
| Furosemide | 67 |
| Azathioprine | 66 |
| Omeprazole | 62 |
| Tenofovir Disoproxil Fumarate | 61 |
| Xifaxan Rifaximin | 59 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gastroenterology Physician Overview
How John Lake, MD fits within the Gastroenterology Physician landscape nationally.
16,567
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider
John Lake, MD's 2,449 claims are above the specialty average of 833.
Nearby Gastroenterology Physician Providers in Minnesota
Other clinicians with the same primary specialty enrolled in Minnesota, drawn from the same CMS NPPES roster as Lake.
Dr. Jad Abimansour
MD
Rochester, MN
Dr. Waqqas Afif
MD
Rochester, MN
Dr. Olalekan Akanbi
MD
Maple Grove, MN
Dr. Jeffrey Albrecht
MD
Minneapolis, MN
Dr. Wafa Ali Abdulla Aldhaleei
MD, MSC, MPH
Rochester, MN
Compare Gastroenterology 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 Minnesota medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Gastroenterology 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 John Lake, MD's specialty? ▼
John Lake, MD specializes in Gastroenterology Physician and practices in Minneapolis, Minnesota. Credentials: MD.
How much does John Lake, MD prescribe under Medicare Part D? ▼
In 2023, John Lake, MD wrote 2,449 Medicare Part D claims totaling $865K in drug costs for 315 beneficiaries.
Where is John Lake, MD located? ▼
John Lake, MD is located at UNIVERSITY OF MINNESOTA PHYSICIANS, Minneapolis, MN, 55454. Phone: (612) 626-6100.
What is John Lake, MD's NPI number? ▼
John Lake, MD's National Provider Identifier (NPI) is 1740360619, issued on 10/16/2006.
Does John Lake, MD prescribe more brand-name or generic drugs? ▼
John Lake, MD's prescribing is 9% brand-name and 91% generic drugs by claim count, with $448K in brand drug costs.
Does John Lake, MD prescribe opioids? ▼
Yes, John Lake, MD had 11 opioid claims in 2023 with an opioid prescribing rate of 0.4%.
How many Gastroenterology Physician providers are there in the US? ▼
There are 16,567 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
What drugs does John Lake, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, John Lake, MD's most frequently prescribed drugs include Ursodiol, Tacrolimus, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Lake, MD accept Medicare? ▼
John Lake, MD appears in CMS Medicare data with 2,449 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 John Lake, MD's credentials? ▼
John Lake, MD's NPI is 1740360619 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.
- 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.