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 10,806 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
923
Medicare Part D claims · 181 beneficiaries · Nephrology Physician avg: 2K
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Mark Mishack, MD filed 923 Medicare Part D claims in 2024 as a Nephrology Physician in Clinton Township, Michigan, prescribing 97% generic.
- 923
- Part D claims, 2024
- 97%
- generic prescribing
- ≥74th
- pct by Part D claim volume (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 Mark Mishack, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1831191485), first enumerated 08/12/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 923 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- State context
State board disciplinary context
Michigan statewide board action statistics are published annually — these figures describe aggregate state activity, not Mark Mishack, MD's individual license status. Verify directly with the state medical board.
Source: MI-BOM annual report 2023
- 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 1831191485 · Nephrology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1831191485
- ENUM-LEGACY 2005
- TAX-MID 11K Nephrology Physician
- RX-LIGHT 923
- BOOK-THIN 269 in Michigan
- PHOTO-ENUM Randy Zelen, M.D. · 2005
Mark Mishack, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
923 ≥ 74th percentile 74% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
◑
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
923 39% 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).
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 3.0%
Nephrology Physician average
3% brand-name claims vs 97% generic, on 923 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.
923
Total Claims
$55K
Total Drug Cost
181
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,574.967
- Total Day Supply
- 77,023
- Brand vs Generic
- 3% brand / 97% generic
- Brand Drug Cost
- $27K
- Generic Drug Cost
- $28K
Patient Demographics
- Average Patient Age
- 77.0 years
- Avg HCC Risk Score
- 2.50
- Gender Split
- 48% female / 52% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Mark Mishack, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Calcitriol
Calcitriol
318 claims
- Hydralazine Hcl 56
Hydralazine Hcl
56 claims
- Nifedipine Er 53
Nifedipine Er
53 claims
- Amlodipine Besylate 48
Amlodipine Besylate
48 claims
- Hydrochlorothiazide 47
Hydrochlorothiazide
47 claims
- Doxazosin Mesylate 44
Doxazosin Mesylate
44 claims
- Furosemide 44
Furosemide
44 claims
- Losartan Potassium 37
Losartan Potassium
37 claims
| Drug | Claims |
|---|---|
| Calcitriol | 318 |
| Hydralazine Hcl | 56 |
| Nifedipine Er Nifedipine | 53 |
| Amlodipine Besylate | 48 |
| Hydrochlorothiazide | 47 |
| Doxazosin Mesylate | 44 |
| Furosemide | 44 |
| Losartan Potassium | 37 |
| Famotidine | 24 |
| Labetalol Hcl | 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.
10,806
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,511
Avg Claims per Provider
Mark Mishack, MD's 923 claims are below the specialty average of 1,511.
Nationwide Nephrology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Mishack, both outside Michigan so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
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.
One of 269 Nephrology Physician providers enrolled in Michigan, 5 are shown here.
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. Fadi Abuhmaid
MD
Allen Park, MI
Compare Nephrology Physician nationally: see state-by-state distribution →
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 2024, Mark Mishack, MD wrote 923 Medicare Part D claims totaling $55K in drug costs for 181 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 3% brand-name and 97% generic drugs by claim count, with $27K in brand drug costs.
How many Nephrology Physician providers are there in the US? ▼
There are 10,806 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,511 Medicare Part D claims per year.
What drugs does Mark Mishack, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Mark Mishack, MD's most frequently prescribed drugs include Calcitriol, Hydralazine Hcl, Nifedipine Er. 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 923 Part D claims and 181 Medicare beneficiaries in 2024. 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 (2024). 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 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.