NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1598295370 MD, PHD
Verify on CMS → Nicholas Semenkovich, MD, PHD
Endocrinology, Diabetes & Metabolism Physician in Milwaukee, Wisconsin.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 7,852 in Endocrinology, Diabetes & Metabolism 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
498
Medicare Part D claims · 48 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
32%
generic claims · 57% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
79.3/100
▼ 4 pts below national avg 83.1 · Above neutral
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
Nicholas Semenkovich, MD, PHD reported a CMS MIPS final score of 79.3/100 - below the 83.1 national average - and filed 498 Medicare Part D claims in 2023.
- 79.3/100
- MIPS score · -4 vs avg
- 498
- Part D claims, 2023
- 32%
- 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.
Nicholas Semenkovich, MD, PHD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
79 30th percentile higher than 30% 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 Nicholas Semenkovich, MD, PHD sits
This provider among endocrinology, diabetes & metabolism physician peers
Across the 2,521 endocrinology, diabetes & metabolism physician providers who report both Medicare Part D prescribing and a MIPS quality score, Nicholas Semenkovich, MD, PHD writes more Part D claims than 16% of them and scores higher on MIPS quality than 32% - placing this provider in the lower-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 endocrinology, diabetes & metabolism physician peer from a representative sample of 60; the gold marker is Nicholas Semenkovich, MD, PHD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Nicholas Semenkovich, MD, PHD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Nicholas Semenkovich, MD, PHD?
Near national averagePrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
498 81% vs specialty avg
MIPS final score
79.3/100 3.8 pts vs avg
Specialty distribution in Wisconsin
How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Wisconsin providers
Medicare quality performance, MIPS
Nicholas Semenkovich, MD, PHD's 2023 MIPS final score plotted against the Endocrinology, Diabetes & Metabolism Physician national average
- MIPS Final Score
- 79.3/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Endocrinology, Diabetes & Metabolism Physician) - 79.3/100 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).
Nicholas Semenkovich, MD, PHD appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding MD, PHD credentials at 8701 WATERTOWN PLANK RD, Milwaukee, WI, 53226, with a listed phone of (414) 955-8296. NPI 1598295370 was issued on 06/14/2017.
Medicare Part D records for calendar year 2023 show 498 prescription claims written by this provider, covering 48 Medicare beneficiaries and totaling roughly $314K in drug spend, split 57% brand-name and 32% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 79.3/100 for the 2023 performance year (Quality 71.5, Cost 59.5), compared with the national average of 83.1.
Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 enrolled providers across 54 states and an average of 2,639 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 | 1598295370 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | MD, PHD |
| Gender | Male |
| NPI Issued | 06/14/2017 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
79.292
Final Score
Avg: 83.1
71.46
Quality
59.5132
Cost
100
Promoting Interoperability
Reporting: Group practice
Brand vs generic prescribing mix · Brand-heavy
Nicholas Semenkovich, MD, PHD - brand share 57.0%
Endocrinology, Diabetes & Metabolism Physician average
57% brand-name claims vs 32% generic, on 498 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.
498
Total Claims
$314K
Total Drug Cost
48
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 906
- Total Day Supply
- 26,379
- Brand vs Generic
- 57% brand / 32% generic
- Brand Drug Cost
- $302K
- Generic Drug Cost
- $7K
Patient Demographics
- Average Patient Age
- 62.9 years
- Avg HCC Risk Score
- 2.07
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 22, 65-74: 18, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Nicholas Semenkovich, MD, PHD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Trulicity
Trulicity
65 claims
- Jardiance
Jardiance
55 claims
- Farxiga 23
Farxiga
23 claims
- Ozempic 21
Ozempic
21 claims
- Atorvastatin Calcium 19
Atorvastatin Calcium
19 claims
- Insulin Lispro Kwi… 18
Insulin Lispro Kwikpen U-100
18 claims
- Levothyroxine Sodium 18
Levothyroxine Sodium
18 claims
- Losartan Potassium 17
Losartan Potassium
17 claims
| Drug | Claims |
|---|---|
| Trulicity Dulaglutide | 65 |
| Jardiance Empagliflozin | 55 |
| Farxiga Dapagliflozin Propanediol | 23 |
| Ozempic Semaglutide | 21 |
| Atorvastatin Calcium | 19 |
| Insulin Lispro Kwikpen U-100 Insulin Lispro | 18 |
| Levothyroxine Sodium | 18 |
| Losartan Potassium | 17 |
| Metformin Hcl Er Metformin Hcl | 16 |
| Sildenafil Citrate | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Endocrinology, Diabetes & Metabolism Physician in WI →
All providers in Wisconsin →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Nicholas Semenkovich, MD, PHD fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider
Nicholas Semenkovich, MD, PHD's 498 claims are below the specialty average of 2,639.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Wisconsin
Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as Semenkovich.
Dr. Laura Andrews
MD
Menasha, WI
Dr. Arnold Asp
MD
La Crosse, WI
Dr. Pamela Baeten
M.D.
Green Bay, WI
Dr. Adrienne Barnosky
D.O.
Wauwatosa, WI
Dr. Jaspreet Batth
MD
Sheboygan, WI
Compare Endocrinology, Diabetes & Metabolism 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 Wisconsin medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Endocrinology, Diabetes & Metabolism 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 Wisconsin
Frequently Asked Questions
What is Nicholas Semenkovich, MD, PHD's specialty? ▼
Nicholas Semenkovich, MD, PHD specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Milwaukee, Wisconsin. Credentials: MD, PHD.
How much does Nicholas Semenkovich, MD, PHD prescribe under Medicare Part D? ▼
In 2023, Nicholas Semenkovich, MD, PHD wrote 498 Medicare Part D claims totaling $314K in drug costs for 48 beneficiaries.
What is Nicholas Semenkovich, MD, PHD's Medicare quality score? ▼
Nicholas Semenkovich, MD, PHD has a CMS MIPS Final Score of 79.3/100 (Quality: 71.5, Cost: 59.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Nicholas Semenkovich, MD, PHD located? ▼
Nicholas Semenkovich, MD, PHD is located at 8701 WATERTOWN PLANK RD, Milwaukee, WI, 53226. Phone: (414) 955-8296.
What is Nicholas Semenkovich, MD, PHD's NPI number? ▼
Nicholas Semenkovich, MD, PHD's National Provider Identifier (NPI) is 1598295370, issued on 06/14/2017.
Does Nicholas Semenkovich, MD, PHD prescribe more brand-name or generic drugs? ▼
Nicholas Semenkovich, MD, PHD's prescribing is 57% brand-name and 32% generic drugs by claim count, with $302K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 7,852 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does Nicholas Semenkovich, MD, PHD prescribe most often? ▼
Based on 2023 Medicare Part D data, Nicholas Semenkovich, MD, PHD's most frequently prescribed drugs include Trulicity, Jardiance, Farxiga. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Nicholas Semenkovich, MD, PHD accept Medicare? ▼
Nicholas Semenkovich, MD, PHD appears in CMS Medicare data with 498 Part D claims and 48 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Nicholas Semenkovich, MD, PHD's credentials? ▼
Nicholas Semenkovich, MD, PHD's NPI is 1598295370 with credentials MD, PHD. 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.