NPI registry status
Active
2026 NPPES data Specialist NPI 1821056912 MD
Verify on CMS → Steffen Hillemann, MD
Specialist in South Burlington, Vermont.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 69,567 in Specialist, 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
4K
Medicare Part D claims · 479 beneficiaries · Specialist avg: 2K
Generic prescribing
79%
generic claims · 21% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
90.1/100
▲ 7 pts above national avg 83.5 · Exceptional
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Steffen Hillemann, MD reported a CMS MIPS final score of 90.1/100 - above the 83.5 national average - and filed 3,754 Medicare Part D claims in 2024.
- 90.1/100
- MIPS score · +7 vs avg
- 4K
- Part D claims, 2024
- 79%
- generic prescribing
- ≥58th
- pct among measured MIPS (lower-bound band)
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 Steffen Hillemann, MD
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 1821056912), first enumerated 05/01/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 3,754 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 90.1/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Hospital affiliations
2 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- 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 1821056912 · Specialist
NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-ABOVE · RX-MID · BOOK-THIN · PHOTO-FINISH
- NPI-10 1821056912
- ENUM-LEGACY 2006
- TAX-MEGA 70K Specialist
- MIPS-ABOVE 90.1/100
- RX-MID 3,754
- BOOK-THIN 73 in Vermont
- PHOTO-FINISH Dinesh Verma · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Miwa Fujiwara · …
Miwa Fujiwara
90 MIPS pts
- Hillemann · this…
Hillemann · this provider
90.1 MIPS pts
- Dinesh Verma · h…
Dinesh Verma
90.1 MIPS pts
- Michael Cannon ·…
Michael Cannon
90.1 MIPS pts
- Gary Siegel · near
Gary Siegel
90.1 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Steffen Hillemann, MD'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.
90 ≥ 58th percentile 58% 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 Steffen Hillemann, MD sits
This provider among specialist peers
Across the 4,261 specialist providers who report both Medicare Part D prescribing and a MIPS quality score, Steffen Hillemann, MD writes more Part D claims than 85% of them and scores higher on MIPS quality than 63% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one specialist peer from a representative sample of 60; the gold marker is Steffen Hillemann, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Steffen Hillemann, MD?
High performer (top quartile)Primary specialty
Specialist
Medicare Part D claims
3,754 146% vs specialty avg
MIPS final score
90.1/100 6.6 pts vs avg
Specialty distribution in Vermont
How Specialist compares to other specialties among Vermont providers
Medicare quality performance, MIPS
Steffen Hillemann, MD's 2023 MIPS final score plotted against the Specialist national average
- MIPS Final Score
- 90.1/100
- 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 | 1821056912 |
|---|---|
| Specialty | Specialist |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/01/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
90.0519
Final Score
Measured-score avg: 83.5
50.173
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Steffen Hillemann, 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.
Copley Hospital Inc
Morrisville, VT
Hillemann And Kirwan Mds PC
South Burlington, VT
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Typical
Steffen Hillemann, MD - brand share 21.0%
Specialist average
21% brand-name claims vs 79% generic, on 3,754 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.
3,754
Total Claims
$940K
Total Drug Cost
479
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 9,402.067
- Total Day Supply
- 279,886
- Brand vs Generic
- 21% brand / 79% generic
- Brand Drug Cost
- $862K
- Generic Drug Cost
- $78K
- Antibiotic Claims
- 17
Patient Demographics
- Average Patient Age
- 77.0 years
- Avg HCC Risk Score
- 1.18
- Gender Split
- 38% female / 62% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Steffen Hillemann, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Atorvastatin Calcium
Atorvastatin Calcium
447 claims
- Metoprolol Succinate
Metoprolol Succinate
396 claims
- Eliquis
Eliquis
358 claims
- Losartan Potassium
Losartan Potassium
182 claims
- Diltiazem 24hr Er … 177
Diltiazem 24hr Er (Cd)
177 claims
- Lisinopril 172
Lisinopril
172 claims
- Metoprolol Tartrate 144
Metoprolol Tartrate
144 claims
- Clopidogrel 124
Clopidogrel
124 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 447 |
| Metoprolol Succinate | 396 |
| Eliquis Apixaban | 358 |
| Losartan Potassium | 182 |
| Diltiazem 24hr Er (Cd) Diltiazem Hcl | 177 |
| Lisinopril | 172 |
| Metoprolol Tartrate | 144 |
| Clopidogrel Clopidogrel Bisulfate | 124 |
| Amlodipine Besylate | 119 |
| Entresto Sacubitril/Valsartan | 104 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How Steffen Hillemann, MD fits within the Specialist landscape nationally.
69,567
Specialist Providers in US
55
States with Specialist
1,524
Avg Claims per Provider
Steffen Hillemann, MD's 3,754 claims are above the specialty average of 1,524.
Nationwide Specialist peers with similar MIPS or enrollment year
Two federal-record peer sets for Hillemann, both outside Vermont so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (90.1 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Specialist Providers in Vermont
Other clinicians with the same primary specialty enrolled in Vermont, drawn from the same CMS NPPES roster as Hillemann.
One of 73 Specialist providers enrolled in Vermont, 5 are shown here.
Megan Allen
ATC, LAT
Milton, VT
Dr. Verne Backus
M.D., M.P.H.
Swanton, VT
Dr. Samantha Barr
PSY.D.
Williston, VT
Ryan Bentrup
Middlebury, VT
Mary Bibb
IBCLC
Jericho, VT
Compare Specialist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Steffen Hillemann, MD's specialty? ▼
Steffen Hillemann, MD specializes in Specialist and practices in South Burlington, Vermont. Credentials: MD.
How much does Steffen Hillemann, MD prescribe under Medicare Part D? ▼
In 2024, Steffen Hillemann, MD wrote 3,754 Medicare Part D claims totaling $940K in drug costs for 479 beneficiaries.
What is Steffen Hillemann, MD's Medicare quality score? ▼
Steffen Hillemann, MD has a CMS MIPS Final Score of 90.1/100, Cost: 50.2. 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 Steffen Hillemann, MD located? ▼
Steffen Hillemann, MD is located at 364 DORSET ST, South Burlington, VT, 05403. Phone: (802) 862-6312.
What is Steffen Hillemann, MD's NPI number? ▼
Steffen Hillemann, MD's National Provider Identifier (NPI) is 1821056912, issued on 05/01/2006.
Does Steffen Hillemann, MD prescribe more brand-name or generic drugs? ▼
Steffen Hillemann, MD's prescribing is 21% brand-name and 79% generic drugs by claim count, with $862K in brand drug costs.
How many Specialist providers are there in the US? ▼
There are 69,567 Specialist providers across 55 states in the US. The average Specialist provider writes 1,524 Medicare Part D claims per year.
What drugs does Steffen Hillemann, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Steffen Hillemann, MD's most frequently prescribed drugs include Atorvastatin Calcium, Metoprolol Succinate, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Steffen Hillemann, MD accept Medicare? ▼
Steffen Hillemann, MD appears in CMS Medicare data with 3,754 Part D claims and 479 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Steffen Hillemann, MD's credentials? ▼
Steffen Hillemann, MD's NPI is 1821056912 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 (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.