NPI registry status
Active
2026 NPPES data Colon & Rectal Surgery Physician NPI 1154378404 MD
Verify on CMS → Heather Slay, MD
Colon & Rectal Surgery 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 1,608 in Colon & Rectal Surgery 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
246
Medicare Part D claims · 234 beneficiaries · Colon & Rectal Surgery Physician avg: 196
Generic prescribing
62%
generic claims · 38% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
100/100
▲ 17 pts above national avg 83.1 · Exceptional
Industry payments
$15.47
1 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
Heather Slay, MD reported a CMS MIPS final score of 100/100 - above the 83.1 national average - and filed 246 Medicare Part D claims in 2023.
- 100/100
- MIPS score · +17 vs avg
- 246
- Part D claims, 2023
- 62%
- 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.
Heather Slay, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
100 Top 7% higher than 93% 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 Heather Slay, MD sits
This provider among colon & rectal surgery physician peers
Across the 536 colon & rectal surgery physician providers who report both Medicare Part D prescribing and a MIPS quality score, Heather Slay, MD writes more Part D claims than 69% of them and scores higher on MIPS quality than 94% - 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 colon & rectal surgery physician peer from a representative sample of 60; the gold marker is Heather Slay, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Heather Slay, MD 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 Heather Slay, MD?
High performer (top quartile)Primary specialty
Colon & Rectal Surgery Physician
Medicare Part D claims
246 26% vs specialty avg
MIPS final score
100/100 16.9 pts vs avg
Specialty distribution in Michigan
How Colon & Rectal Surgery Physician compares to other specialties among Michigan providers
Medicare quality performance, MIPS
Heather Slay, MD's 2023 MIPS final score plotted against the Colon & Rectal Surgery Physician national average
- MIPS Final Score
- 100/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Colon & Rectal Surgery Physician) - 100/100 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).
Heather Slay, MD appears in the CMS NPPES registry as a Colon & Rectal Surgery Physician provider holding MD credentials at 4100 LAKE DR SE, Grand Rapids, MI, 49546, with a listed phone of (616) 356-4100. NPI 1154378404 was issued on 05/30/2006.
Medicare Part D records for calendar year 2023 show 246 prescription claims written by this provider, covering 234 Medicare beneficiaries and totaling roughly $9K in drug spend, split 38% brand-name and 62% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 100/100 for the 2023 performance year (Quality 87.5), compared with the national average of 83.1.
Colon & Rectal Surgery Physician is a narrow specialty nationwide, with 1,608 enrolled providers across 50 states and an average of 196 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 | 1154378404 |
|---|---|
| Specialty | Colon & Rectal Surgery Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 05/30/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
100
Final Score
Avg: 83.1
87.5432
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Heather Slay, 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.
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 Heather Slay, MD. Source: openpaymentsdata.cms.gov.
Total received
$15
Largest payer
Integra LifeSciences Corporation
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 Heather Slay, MD. To verify Heather Slay, MD'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 · Above average
Heather Slay, MD - brand share 38.0%
Colon & Rectal Surgery Physician average
38% brand-name claims vs 62% generic, on 246 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.
246
Total Claims
$9K
Total Drug Cost
234
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 261
- Total Day Supply
- 1,058
- Brand vs Generic
- 38% brand / 62% generic
- Brand Drug Cost
- $4K
- Generic Drug Cost
- $5K
Patient Demographics
- Average Patient Age
- 69.3 years
- Avg HCC Risk Score
- 0.83
- Gender Split
- 51% female / 49% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Peg 3350-Electrolyte Sodium Chloride/Nahco3/Kcl/Peg | 206 |
| Sutab Sod Sulf/Pot Chloride/Mag Sulf | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Colon & Rectal Surgery Physician Overview
How Heather Slay, MD fits within the Colon & Rectal Surgery Physician landscape nationally.
1,608
Colon & Rectal Surgery Physician Providers in US
50
States with Colon & Rectal Surgery Physician
196
Avg Claims per Provider
Heather Slay, MD's 246 claims are above the specialty average of 196.
Nearby Colon & Rectal Surgery Physician Providers in Michigan
Other clinicians with the same primary specialty enrolled in Michigan, drawn from the same CMS NPPES roster as Slay.
Dr. Amer Alame
M.D.
Saint Clair Shores, MI
Dr. Maryam Aleissa
MD
Southfield, MI
Dr. Kenneth Bark
M.D.
Rochester Hills, MI
Dr. Donald Barkel
MD
Royal Oak, MI
Dr. Jasneet Bhullar
M.D.
Rochester Hills, MI
Compare Colon & Rectal Surgery 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 Michigan medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Colon & Rectal Surgery 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Michigan
Frequently Asked Questions
What is Heather Slay, MD's specialty? ▼
Heather Slay, MD specializes in Colon & Rectal Surgery Physician and practices in Grand Rapids, Michigan. Credentials: MD.
How much does Heather Slay, MD prescribe under Medicare Part D? ▼
In 2023, Heather Slay, MD wrote 246 Medicare Part D claims totaling $9K in drug costs for 234 beneficiaries.
What is Heather Slay, MD's Medicare quality score? ▼
Heather Slay, MD has a CMS MIPS Final Score of 100/100 (Quality: 87.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Heather Slay, MD located? ▼
Heather Slay, MD is located at 4100 LAKE DR SE, Grand Rapids, MI, 49546. Phone: (616) 356-4100.
What is Heather Slay, MD's NPI number? ▼
Heather Slay, MD's National Provider Identifier (NPI) is 1154378404, issued on 05/30/2006.
Does Heather Slay, MD prescribe more brand-name or generic drugs? ▼
Heather Slay, MD's prescribing is 38% brand-name and 62% generic drugs by claim count, with $4K in brand drug costs.
How many Colon & Rectal Surgery Physician providers are there in the US? ▼
There are 1,608 Colon & Rectal Surgery Physician providers across 50 states in the US. The average Colon & Rectal Surgery Physician provider writes 196 Medicare Part D claims per year.
What drugs does Heather Slay, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Heather Slay, MD's most frequently prescribed drugs include Peg 3350-Electrolyte, Sutab. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Heather Slay, MD accept Medicare? ▼
Heather Slay, MD appears in CMS Medicare data with 246 Part D claims and 234 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Heather Slay, MD's credentials? ▼
Heather Slay, MD's NPI is 1154378404 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.