NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1548688773 MD, MPH
Verify on CMS → Catherine Bartnik, MD, MPH
Gastroenterology Physician in Grand Rapids, Michigan.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 17,061 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
709
Medicare Part D claims · 215 beneficiaries · Gastroenterology Physician avg: 848
Generic prescribing
82%
generic claims · 18% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
100/100
▲ 17 pts above national avg 83.5 · Exceptional
Industry payments
$246.85
9 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Catherine Bartnik, MD, MPH reported a CMS MIPS final score of 100/100 - above the 83.5 national average - and filed 709 Medicare Part D claims in 2024.
- 100/100
- MIPS score · +17 vs avg
- 709
- Part D claims, 2024
- 82%
- 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.
Federal trust snapshot
What official records show about Catherine Bartnik, MD, MPH
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1548688773), first enumerated 04/04/2014.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 709 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 100/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$246.85 in reported industry payments (9 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
Michigan statewide board action statistics are published annually — these figures describe aggregate state activity, not Catherine Bartnik, MD, MPH's individual license status. Verify directly with the state medical board.
Source: MI-BOM annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1548688773 · Gastroenterology Physician
NPI-10 · ENUM-MID · TAX-MID · MIPS-ELITE · RX-LIGHT · BOOK-THIN · PHOTO-FINISH
- NPI-10 1548688773
- ENUM-MID 2014
- TAX-MID 17K Gastroenterology Physician
- MIPS-ELITE 100/100
- RX-LIGHT 709
- BOOK-THIN 390 in Michigan
- PHOTO-FINISH Alaa Abousaif · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Bartnik · this p…
Bartnik · this provider
100 MIPS pts
- Hadiatou Barry ·…
Hadiatou Barry
100 MIPS pts
- Alaa Abousaif · …
Alaa Abousaif
100 MIPS pts
- Thomas Aguirre ·…
Thomas Aguirre
100 MIPS pts
- Lydia Aye · near
Lydia Aye
100 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Catherine Bartnik, MD, MPH's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
100 ≥ 92nd percentile 92% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Catherine Bartnik, MD, MPH sits
This provider among gastroenterology physician peers
Across the 5,560 gastroenterology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Catherine Bartnik, MD, MPH writes more Part D claims than 47% of them and scores higher on MIPS quality than 90% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one gastroenterology physician peer from a representative sample of 60; the gold marker is Catherine Bartnik, MD, MPH. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Catherine Bartnik, MD, MPH 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 Catherine Bartnik, MD, MPH?
High performer (top quartile)Primary specialty
Gastroenterology Physician
Medicare Part D claims
709 16% vs specialty avg
MIPS final score
100/100 16.5 pts vs avg
Specialty distribution in Michigan
How Gastroenterology Physician compares to other specialties among Michigan providers
Medicare quality performance, MIPS
Catherine Bartnik, MD, MPH's 2023 MIPS final score plotted against the Gastroenterology Physician national average
- MIPS Final Score
- 100/100
- vs 83.5 national avg · 2023 performance year
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).
Practice Address
Provider Details
| NPI | 1548688773 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | MD, MPH |
| Gender | Female |
| NPI Issued | 04/04/2014 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
100
Final Score
Measured-score avg: 83.5
87.5432
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Catherine Bartnik, MD, MPH 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.
Spectrum Health Primary Care Partners
Grand Rapids, MI
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Catherine Bartnik, MD, MPH. Source: openpaymentsdata.cms.gov.
Total received
$247
Largest payer
Cook Medical LLC
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.
License & disciplinary context - Michigan MI-BOM 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~41K Michigan medical licensees in 2023 - they are NOT specific to Catherine Bartnik, MD, MPH. To verify Catherine Bartnik, MD, MPH's current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases
MI-BOM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Michigan disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Catherine Bartnik, MD, MPH - brand share 18.0%
Gastroenterology Physician average
18% brand-name claims vs 82% generic, on 709 2024 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 2024.
709
Total Claims
$309K
Total Drug Cost
215
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,103.233
- Total Day Supply
- 28,818
- Brand vs Generic
- 18% brand / 82% generic
- Brand Drug Cost
- $278K
- Generic Drug Cost
- $31K
- Antibiotic Claims
- 38
Patient Demographics
- Average Patient Age
- 71.8 years
- Avg HCC Risk Score
- 1.95
- Gender Split
- 56% female / 44% male
- Age Distribution
- <65: 21, 65-74: 119, 75-84: 59, 85+: 16
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Catherine Bartnik, MD, MPH prescribes most
Top Medicare Part D drugs by claim count, 2024
- Ursodiol
Ursodiol
99 claims
- Omeprazole
Omeprazole
89 claims
- Peg 3350-Electrolyte
Peg 3350-Electrolyte
88 claims
- Carvedilol
Carvedilol
68 claims
- Spironolactone
Spironolactone
49 claims
- Mycophenolate Mofe…
Mycophenolate Mofetil
47 claims
- Pantoprazole Sodium
Pantoprazole Sodium
40 claims
- Prednisone 27
Prednisone
27 claims
| Drug | Claims |
|---|---|
| Ursodiol | 99 |
| Omeprazole | 89 |
| Peg 3350-Electrolyte Sodium Chloride/Nahco3/Kcl/Peg | 88 |
| Carvedilol | 68 |
| Spironolactone | 49 |
| Mycophenolate Mofetil | 47 |
| Pantoprazole Sodium | 40 |
| Prednisone | 27 |
| Furosemide | 25 |
| Xifaxan Rifaximin | 25 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gastroenterology Physician Overview
How Catherine Bartnik, MD, MPH fits within the Gastroenterology Physician landscape nationally.
17,061
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
848
Avg Claims per Provider
Catherine Bartnik, MD, MPH's 709 claims are below the specialty average of 848.
Nationwide Gastroenterology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Bartnik, both outside Michigan so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (100 here).
Same NPPES enumeration year (2014)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Gastroenterology Physician Providers in Michigan
Other clinicians with the same primary specialty enrolled in Michigan, drawn from the same CMS NPPES roster as Bartnik.
One of 390 Gastroenterology Physician providers enrolled in Michigan, 5 are shown here.
Dr. Amir Abadir
M.D.
Lansing, MI
Mohamed Abdallah
Royal Oak, MI
Dr. Mohannad Abousaleh
MD
Ypsilanti, MI
Dr. Megan Adams
MD
Ann Arbor, MI
Dr. Larry Adler
M.D.
Ypsilanti, MI
Compare Gastroenterology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Catherine Bartnik, MD, MPH's specialty? ▼
Catherine Bartnik, MD, MPH specializes in Gastroenterology Physician and practices in Grand Rapids, Michigan. Credentials: MD, MPH.
How much does Catherine Bartnik, MD, MPH prescribe under Medicare Part D? ▼
In 2024, Catherine Bartnik, MD, MPH wrote 709 Medicare Part D claims totaling $309K in drug costs for 215 beneficiaries.
What is Catherine Bartnik, MD, MPH's Medicare quality score? ▼
Catherine Bartnik, MD, MPH has a CMS MIPS Final Score of 100/100 (Quality: 87.5). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Catherine Bartnik, MD, MPH located? ▼
Catherine Bartnik, MD, MPH is located at 4100 LAKE DR SE STE 205, Grand Rapids, MI, 49546. Phone: (616) 267-7414.
What is Catherine Bartnik, MD, MPH's NPI number? ▼
Catherine Bartnik, MD, MPH's National Provider Identifier (NPI) is 1548688773, issued on 04/04/2014.
Does Catherine Bartnik, MD, MPH prescribe more brand-name or generic drugs? ▼
Catherine Bartnik, MD, MPH's prescribing is 18% brand-name and 82% generic drugs by claim count, with $278K in brand drug costs.
How many Gastroenterology Physician providers are there in the US? ▼
There are 17,061 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 848 Medicare Part D claims per year.
What drugs does Catherine Bartnik, MD, MPH prescribe most often? ▼
Based on 2024 Medicare Part D data, Catherine Bartnik, MD, MPH's most frequently prescribed drugs include Ursodiol, Omeprazole, Peg 3350-Electrolyte. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Catherine Bartnik, MD, MPH accept Medicare? ▼
Catherine Bartnik, MD, MPH appears in CMS Medicare data with 709 Part D claims and 215 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Catherine Bartnik, MD, MPH's credentials? ▼
Catherine Bartnik, MD, MPH's NPI is 1548688773 with credentials MD, MPH. 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.