NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1831191485 MD
Verify on CMS → Mark Mishack, MD
Nephrology Physician in Clinton Township, 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 10,569 in Nephrology 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
901
Medicare Part D claims · 195 beneficiaries · Nephrology Physician avg: 1K
Generic prescribing
98%
generic claims · 2% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Mark Mishack, MD filed 901 Medicare Part D claims in 2023 as a Nephrology Physician in Clinton Township, Michigan, prescribing 98% generic.
- 901
- Part D claims, 2023
- 98%
- generic prescribing
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.
Mark Mishack, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
901 Top 25% higher than 75% 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)
Mark Mishack, MD 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 Mark Mishack, MD?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
901 38% vs specialty avg
Specialty distribution in Michigan
How Nephrology 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 Nephrology 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).
Mark Mishack, MD appears in the CMS NPPES registry as a Nephrology Physician provider holding MD credentials at 15945 19 MILE RD, Clinton Township, MI, 48038, with a listed phone of (586) 228-6603. NPI 1831191485 was issued on 08/12/2005.
Medicare Part D records for calendar year 2023 show 901 prescription claims written by this provider, covering 195 Medicare beneficiaries and totaling roughly $54K in drug spend, split 2% brand-name and 98% generic by claim count.
Nephrology Physician is a mid-sized specialty nationwide, with 10,569 enrolled providers across 55 states and an average of 1,454 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 | 1831191485 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/12/2005 |
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 Mark Mishack, MD. To verify Mark Mishack, MD'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.
Brand vs generic prescribing mix · Generic-heavy
Mark Mishack, MD - brand share 2.0%
Nephrology Physician average
2% brand-name claims vs 98% generic, on 901 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.
901
Total Claims
$54K
Total Drug Cost
195
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,474
- Total Day Supply
- 74,035
- Brand vs Generic
- 2% brand / 98% generic
- Brand Drug Cost
- $7K
- Generic Drug Cost
- $47K
Patient Demographics
- Average Patient Age
- 77.0 years
- Avg HCC Risk Score
- 2.34
- Gender Split
- 48% female / 52% male
- Age Distribution
- <65: 11, 65-74: 68, 75-84: 67, 85+: 49
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mark Mishack, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Calcitriol
Calcitriol
298 claims
- Nifedipine Er 68
Nifedipine Er
68 claims
- Hydralazine Hcl 61
Hydralazine Hcl
61 claims
- Amlodipine Besylate 56
Amlodipine Besylate
56 claims
- Hydrochlorothiazide 54
Hydrochlorothiazide
54 claims
- Doxazosin Mesylate 38
Doxazosin Mesylate
38 claims
- Furosemide 38
Furosemide
38 claims
- Losartan Potassium 26
Losartan Potassium
26 claims
| Drug | Claims |
|---|---|
| Calcitriol | 298 |
| Nifedipine Er Nifedipine | 68 |
| Hydralazine Hcl | 61 |
| Amlodipine Besylate | 56 |
| Hydrochlorothiazide | 54 |
| Doxazosin Mesylate | 38 |
| Furosemide | 38 |
| Losartan Potassium | 26 |
| Labetalol Hcl | 25 |
| Allopurinol | 24 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Mark Mishack, MD fits within the Nephrology Physician landscape nationally.
10,569
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider
Mark Mishack, MD's 901 claims are below the specialty average of 1,454.
Nearby Nephrology Physician Providers in Michigan
Other clinicians with the same primary specialty enrolled in Michigan, drawn from the same CMS NPPES roster as Mishack.
Mohamed Abdali
Detroit, MI
Dr. Mohamed Abdalla
M.D.
Flint, MI
Dr. Ameer Abdulrazzak
MD
Roseville, MI
Dr. Hassan Abou-Rass
M.D.
Detroit, MI
Dr. George Adam
M.D.
Battle Creek, MI
Compare Nephrology 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 Michigan medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Nephrology 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 Mark Mishack, MD's specialty? ▼
Mark Mishack, MD specializes in Nephrology Physician and practices in Clinton Township, Michigan. Credentials: MD.
How much does Mark Mishack, MD prescribe under Medicare Part D? ▼
In 2023, Mark Mishack, MD wrote 901 Medicare Part D claims totaling $54K in drug costs for 195 beneficiaries.
Where is Mark Mishack, MD located? ▼
Mark Mishack, MD is located at 15945 19 MILE RD, Clinton Township, MI, 48038. Phone: (586) 228-6603.
What is Mark Mishack, MD's NPI number? ▼
Mark Mishack, MD's National Provider Identifier (NPI) is 1831191485, issued on 08/12/2005.
Does Mark Mishack, MD prescribe more brand-name or generic drugs? ▼
Mark Mishack, MD's prescribing is 2% brand-name and 98% generic drugs by claim count, with $7K in brand drug costs.
How many Nephrology Physician providers are there in the US? ▼
There are 10,569 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,454 Medicare Part D claims per year.
What drugs does Mark Mishack, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Mark Mishack, MD's most frequently prescribed drugs include Calcitriol, Nifedipine Er, Hydralazine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mark Mishack, MD accept Medicare? ▼
Mark Mishack, MD appears in CMS Medicare data with 901 Part D claims and 195 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Mishack, MD's credentials? ▼
Mark Mishack, MD's NPI is 1831191485 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.