NPI registry status
Active
2026 NPPES data Diagnostic Radiology Physician NPI 1639309073 M.D.
Verify on CMS → Michael Switzer, M.D.
Diagnostic Radiology Physician in Sun City, Arizona.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 39,551 in Diagnostic Radiology 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
383
Medicare Part D claims · 155 beneficiaries · Diagnostic Radiology Physician avg: 63
MIPS score
75/100
▼ 8 pts below national avg 83.1 · Above neutral
Industry payments
$1.0K
23 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Michael Switzer, M.D. reported a CMS MIPS final score of 75/100 - below the 83.1 national average - and filed 383 Medicare Part D claims in 2023.
- 75/100
- MIPS score · -8 vs avg
- 383
- Part D claims, 2023
- 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.
Michael Switzer, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
75 15th percentile higher than 15% 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 Michael Switzer, M.D. sits
This provider among diagnostic radiology physician peers
Across the 1,123 diagnostic radiology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Michael Switzer, M.D. writes more Part D claims than 97% of them and scores higher on MIPS quality than 13% - placing this provider in the high-volume, lower-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 diagnostic radiology physician peer from a representative sample of 60; the gold marker is Michael Switzer, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Michael Switzer, M.D. 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 Michael Switzer, M.D.?
Below national averagePrimary specialty
Diagnostic Radiology Physician
Medicare Part D claims
383 6× vs specialty avg
MIPS final score
75/100 8.1 pts vs avg
Specialty distribution in Arizona
How Diagnostic Radiology Physician compares to other specialties among Arizona providers
Medicare quality performance, MIPS
Michael Switzer, M.D.'s 2023 MIPS final score plotted against the Diagnostic Radiology Physician national average
- MIPS Final Score
- 75/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Diagnostic Radiology Physician) - 75/100 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).
Michael Switzer, M.D. appears in the CMS NPPES registry as a Diagnostic Radiology Physician provider holding M.D. credentials at 14642 N DEL WEBB BLVD STE 200, Sun City, AZ, 85351, with a listed phone of (480) 770-4615. NPI 1639309073 was issued on 07/20/2009.
Medicare Part D records for calendar year 2023 show 383 prescription claims written by this provider, covering 155 Medicare beneficiaries and totaling roughly $14K in drug spend, with an opioid prescribing rate of 18.5%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 75/100 for the 2023 performance year, compared with the national average of 83.1.
Diagnostic Radiology Physician is a mid-sized specialty nationwide, with 39,551 enrolled providers across 56 states and an average of 63 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 | 1639309073 |
|---|---|
| Specialty | Diagnostic Radiology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/20/2009 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
75
Final Score
Avg: 83.1
Reporting: Group practice
Hospital and facility affiliations
Facilities where Michael Switzer, M.D. 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.
District Medical Group Inc
Phoenix, AZ
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 Michael Switzer, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$1.0K
Largest payer
AngioDynamics, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
383
Total Claims
$14K
Total Drug Cost
155
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 493
- Total Day Supply
- 10,248
- Generic Drug Cost
- $3K
- Opioid Claims
- 71 (18.5% rate)
- Antibiotic Claims
- 14
Patient Demographics
- Average Patient Age
- 73.0 years
- Avg HCC Risk Score
- 2.23
- Gender Split
- 52% female / 48% male
- Age Distribution
- <65: 16, 65-74: 70, 75-84: 55, 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 Michael Switzer, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Clopidogrel
Clopidogrel
168 claims
- Hydrocodone-Acetam… 49
Hydrocodone-Acetaminophen
49 claims
- Methylprednisolone 31
Methylprednisolone
31 claims
- Oxybutynin Chloride 21
Oxybutynin Chloride
21 claims
- Oxycodone-Acetamin… 18
Oxycodone-Acetaminophen
18 claims
- Ibuprofen 16
Ibuprofen
16 claims
- Xarelto 16
Xarelto
16 claims
- Ondansetron Odt 11
Ondansetron Odt
11 claims
| Drug | Claims |
|---|---|
| Clopidogrel Clopidogrel Bisulfate | 168 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 49 |
| Methylprednisolone | 31 |
| Oxybutynin Chloride | 21 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 18 |
| Ibuprofen | 16 |
| Xarelto Rivaroxaban | 16 |
| Ondansetron Odt Ondansetron | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Diagnostic Radiology Physician Overview
How Michael Switzer, M.D. fits within the Diagnostic Radiology Physician landscape nationally.
39,551
Diagnostic Radiology Physician Providers in US
56
States with Diagnostic Radiology Physician
63
Avg Claims per Provider
Michael Switzer, M.D.'s 383 claims are above the specialty average of 63.
Nearby Diagnostic Radiology Physician Providers in Arizona
Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as Switzer.
Abdelrahman Abdalla
Tucson, AZ
Dr. Thomas Abram
MD
Tucson, AZ
Dr. Artyom Abramyan
DO
Tucson, AZ
Dr. William Acker
M.D.
Phoenix, AZ
Cameron Adler
Scottsdale, AZ
Compare Diagnostic Radiology 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 Arizona medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Diagnostic Radiology 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 Michael Switzer, M.D.'s specialty? ▼
Michael Switzer, M.D. specializes in Diagnostic Radiology Physician and practices in Sun City, Arizona. Credentials: M.D..
How much does Michael Switzer, M.D. prescribe under Medicare Part D? ▼
In 2023, Michael Switzer, M.D. wrote 383 Medicare Part D claims totaling $14K in drug costs for 155 beneficiaries.
What is Michael Switzer, M.D.'s Medicare quality score? ▼
Michael Switzer, M.D. has a CMS MIPS Final Score of 75/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Michael Switzer, M.D. located? ▼
Michael Switzer, M.D. is located at 14642 N DEL WEBB BLVD STE 200, Sun City, AZ, 85351. Phone: (480) 770-4615.
What is Michael Switzer, M.D.'s NPI number? ▼
Michael Switzer, M.D.'s National Provider Identifier (NPI) is 1639309073, issued on 07/20/2009.
Does Michael Switzer, M.D. prescribe opioids? ▼
Yes, Michael Switzer, M.D. had 71 opioid claims in 2023 with an opioid prescribing rate of 18.5%.
How many Diagnostic Radiology Physician providers are there in the US? ▼
There are 39,551 Diagnostic Radiology Physician providers across 56 states in the US. The average Diagnostic Radiology Physician provider writes 63 Medicare Part D claims per year.
What drugs does Michael Switzer, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Michael Switzer, M.D.'s most frequently prescribed drugs include Clopidogrel, Hydrocodone-Acetaminophen, Methylprednisolone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Michael Switzer, M.D. accept Medicare? ▼
Michael Switzer, M.D. appears in CMS Medicare data with 383 Part D claims and 155 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Michael Switzer, M.D.'s credentials? ▼
Michael Switzer, M.D.'s NPI is 1639309073 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.
- 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
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.