NPI registry status
Active
2026 NPPES data Chiropractor NPI 1538398680 MD
Verify on CMS → Michael Ambrose, MD
Chiropractor in Mount Vernon, Illinois.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 95,504 in Chiropractor, 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
833
Medicare Part D claims · 263 beneficiaries · Chiropractor avg: 824
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Michael Ambrose, MD filed 833 Medicare Part D claims in 2023 as a Chiropractor in Mount Vernon, Illinois.
- 833
- Part D claims, 2023
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 Ambrose, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
833 Top 27% higher than 73% 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
What does the federal data show about Michael Ambrose, MD?
Quality data not reportedPrimary specialty
Chiropractor
Medicare Part D claims
833 1% vs specialty avg
Specialty distribution in Illinois
How Chiropractor compares to other specialties among Illinois 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 Chiropractor. 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).
Michael Ambrose, MD appears in the CMS NPPES registry as a Chiropractor provider holding MD credentials at 605 N 12TH ST, Mount Vernon, IL, 62864, with a listed phone of (618) 241-2212. NPI 1538398680 was issued on 07/10/2009.
Medicare Part D records for calendar year 2023 show 833 prescription claims written by this provider, covering 263 Medicare beneficiaries and totaling roughly $57K in drug spend.
Chiropractor is a high-volume specialty nationwide, with 95,504 enrolled providers across 56 states and an average of 824 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 | 1538398680 |
|---|---|
| Specialty | Chiropractor |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/10/2009 |
License & disciplinary context - Illinois IDFPR 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 ~42K Illinois medical licensees in 2023 - they are NOT specific to Michael Ambrose, MD. To verify Michael Ambrose, MD's current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases
IDFPR 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 Illinois 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.
833
Total Claims
$57K
Total Drug Cost
263
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 933
- Total Day Supply
- 21,910
- Generic Drug Cost
- $15K
- Antibiotic Claims
- 135
Patient Demographics
- Average Patient Age
- 77.7 years
- Avg HCC Risk Score
- 1.95
- Gender Split
- 63% female / 37% male
- Age Distribution
- <65: 25, 65-74: 67, 75-84: 95, 85+: 76
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Michael Ambrose, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
55 claims
- Cefdinir
Cefdinir
48 claims
- Furosemide
Furosemide
43 claims
- Eliquis
Eliquis
30 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
25 claims
- Metoprolol Succinate
Metoprolol Succinate
23 claims
- Mirtazapine 20
Mirtazapine
20 claims
- Prednisone 20
Prednisone
20 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 55 |
| Cefdinir | 48 |
| Furosemide | 43 |
| Eliquis Apixaban | 30 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 25 |
| Metoprolol Succinate | 23 |
| Mirtazapine | 20 |
| Prednisone | 20 |
| Potassium Chloride | 19 |
| Spironolactone | 19 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Chiropractor Overview
How Michael Ambrose, MD fits within the Chiropractor landscape nationally.
95,504
Chiropractor Providers in US
56
States with Chiropractor
824
Avg Claims per Provider
Michael Ambrose, MD's 833 claims are above the specialty average of 824.
Nearby Chiropractor Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Ambrose.
Dr. Jill Aardema
D.C.
Oak Park, IL
Dr. Robert Aarestad
DC, B.S., MMP
Plainfield, IL
Dr. Michael Abbett
DC
Granite City, IL
Dr. Wala Abu-Mallouh
DC
Romeoville, IL
Dr. Rashid Abu-Shanab
D.C.
Bridgeview, IL
Compare Chiropractor 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 Illinois medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Chiropractor 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
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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
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Explore Illinois
Frequently Asked Questions
What is Michael Ambrose, MD's specialty? ▼
Michael Ambrose, MD specializes in Chiropractor and practices in Mount Vernon, Illinois. Credentials: MD.
How much does Michael Ambrose, MD prescribe under Medicare Part D? ▼
In 2023, Michael Ambrose, MD wrote 833 Medicare Part D claims totaling $57K in drug costs for 263 beneficiaries.
Where is Michael Ambrose, MD located? ▼
Michael Ambrose, MD is located at 605 N 12TH ST, Mount Vernon, IL, 62864. Phone: (618) 241-2212.
What is Michael Ambrose, MD's NPI number? ▼
Michael Ambrose, MD's National Provider Identifier (NPI) is 1538398680, issued on 07/10/2009.
How many Chiropractor providers are there in the US? ▼
There are 95,504 Chiropractor providers across 56 states in the US. The average Chiropractor provider writes 824 Medicare Part D claims per year.
What drugs does Michael Ambrose, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Michael Ambrose, MD's most frequently prescribed drugs include Levothyroxine Sodium, Cefdinir, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Michael Ambrose, MD accept Medicare? ▼
Michael Ambrose, MD appears in CMS Medicare data with 833 Part D claims and 263 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Michael Ambrose, MD's credentials? ▼
Michael Ambrose, MD's NPI is 1538398680 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.
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.