NPI registry status
Active
2026 NPPES data Emergency Medical Services (Emergency Medicine) Physician NPI 1528003308 M.D.
Verify on CMS → Dan Chaffee, M.D.
Emergency Medical Services (Emergency Medicine) Physician in Saint Joseph, 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 3,618 in Emergency Medical Services (Emergency Medicine) 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
99
Medicare Part D claims · 16 beneficiaries · Emergency Medical Services (Emergency Medicine) Physician avg: 394
Industry payments
$34.45
1 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Dan Chaffee, M.D. filed 99 Medicare Part D claims in 2023 as a Emergency Medical Services (Emergency Medicine) Physician in Saint Joseph, Michigan.
- 99
- Part D claims, 2023
- $34.45
- industry payments (Sunshine Act)
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.
Dan Chaffee, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
99 0th percentile higher than 0% 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-eligible specialty (heuristic, not verified)
Dan Chaffee, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Dan Chaffee, M.D.?
Quality data not reportedPrimary specialty
Emergency Medical Services (Emergency Medicine) Physician
Medicare Part D claims
99 75% vs specialty avg
Specialty distribution in Michigan
How Emergency Medical Services (Emergency Medicine) Physician compares to other specialties among Michigan 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 Emergency Medical Services (Emergency Medicine) 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).
Dan Chaffee, M.D. appears in the CMS NPPES registry as an Emergency Medical Services (Emergency Medicine) Physician provider holding M.D. credentials at 1234 NAPIER AVE, Saint Joseph, MI, 49085, with a listed phone of (269) 983-8300. NPI 1528003308 was issued on 06/17/2006.
Medicare Part D records for calendar year 2023 show 99 prescription claims written by this provider, covering 16 Medicare beneficiaries and totaling roughly $6K in drug spend.
Emergency Medical Services (Emergency Medicine) Physician is a narrow specialty nationwide, with 3,618 enrolled providers across 55 states and an average of 394 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 | 1528003308 |
|---|---|
| Specialty | Emergency Medical Services (Emergency Medicine) Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 06/17/2006 |
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 Dan Chaffee, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$34
Largest payer
ABBVIE 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.
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 Dan Chaffee, M.D.. To verify Dan Chaffee, M.D.'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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
99
Total Claims
$6K
Total Drug Cost
16
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 113
- Total Day Supply
- 2,476
- Generic Drug Cost
- $2K
Patient Demographics
- Average Patient Age
- 65.9 years
- Avg HCC Risk Score
- 1.59
More Emergency Medical Services (Emergency Medicine) Physician in MI →
All providers in Michigan →
Compare specialties →
Emergency Medical Services (Emergency Medicine) Physician Overview
How Dan Chaffee, M.D. fits within the Emergency Medical Services (Emergency Medicine) Physician landscape nationally.
3,618
Emergency Medical Services (Emergency Medicine) Physician Providers in US
55
States with Emergency Medical Services (Emergency Medicine) Physician
394
Avg Claims per Provider
Dan Chaffee, M.D.'s 99 claims are below the specialty average of 394.
Nearby Emergency Medical Services (Emergency Medicine) Physician Providers in Michigan
Other clinicians with the same primary specialty enrolled in Michigan, drawn from the same CMS NPPES roster as Chaffee.
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 Emergency Medical Services (Emergency Medicine) 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 Dan Chaffee, M.D.'s specialty? ▼
Dan Chaffee, M.D. specializes in Emergency Medical Services (Emergency Medicine) Physician and practices in Saint Joseph, Michigan. Credentials: M.D..
How much does Dan Chaffee, M.D. prescribe under Medicare Part D? ▼
In 2023, Dan Chaffee, M.D. wrote 99 Medicare Part D claims totaling $6K in drug costs for 16 beneficiaries.
Where is Dan Chaffee, M.D. located? ▼
Dan Chaffee, M.D. is located at 1234 NAPIER AVE, Saint Joseph, MI, 49085. Phone: (269) 983-8300.
What is Dan Chaffee, M.D.'s NPI number? ▼
Dan Chaffee, M.D.'s National Provider Identifier (NPI) is 1528003308, issued on 06/17/2006.
How many Emergency Medical Services (Emergency Medicine) Physician providers are there in the US? ▼
There are 3,618 Emergency Medical Services (Emergency Medicine) Physician providers across 55 states in the US. The average Emergency Medical Services (Emergency Medicine) Physician provider writes 394 Medicare Part D claims per year.
Does Dan Chaffee, M.D. accept Medicare? ▼
Dan Chaffee, M.D. appears in CMS Medicare data with 99 Part D claims and 16 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Dan Chaffee, M.D.'s credentials? ▼
Dan Chaffee, M.D.'s NPI is 1528003308 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
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.
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 May 2026.