NPI registry status
Active
2026 NPPES data Urology Physician NPI 1144200270 M.D.
Verify on CMS → Marc Arnkoff, M.D.
Urology Physician in Southfield, 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 13,367 in Urology 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
602
Medicare Part D claims · 166 beneficiaries · Urology Physician avg: 1K
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$960.16
9 payments · CMS Open Payments (Sunshine Act)
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
Marc Arnkoff, M.D. filed 602 Medicare Part D claims in 2023 as a Urology Physician in Southfield, Michigan, prescribing 97% generic.
- 602
- Part D claims, 2023
- 97%
- 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.
Marc Arnkoff, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
602 Top 31% higher than 69% 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 certification likely (heuristic, not verified)
Marc Arnkoff, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 4 hospital affiliations - 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 Marc Arnkoff, M.D.?
Quality data not reportedPrimary specialty
Urology Physician
Medicare Part D claims
602 53% vs specialty avg
Specialty distribution in Michigan
How Urology 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 Urology 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).
Marc Arnkoff, M.D. appears in the CMS NPPES registry as a Urology Physician provider holding M.D. credentials at 26400 W 12 MILE RD, Southfield, MI, 48034, with a listed phone of (248) 569-3009. NPI 1144200270 was issued on 01/17/2006.
Medicare Part D records for calendar year 2023 show 602 prescription claims written by this provider, covering 166 Medicare beneficiaries and totaling roughly $23K in drug spend, split 3% brand-name and 97% generic by claim count.
Urology Physician is a mid-sized specialty nationwide, with 13,367 enrolled providers across 54 states and an average of 1,280 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 | 1144200270 |
|---|---|
| Specialty | Urology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 01/17/2006 |
Hospital and facility affiliations
Facilities where Marc Arnkoff, M.D. 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.
According to CMS billing records, Marc Arnkoff, M.D. is affiliated with 4 Medicare-billing facilities across 4 states.
Baptist Health Medical Group Inc
Corbin, KY
Bullhead City Clinic Corp
Bullhead City, AZ
Michigan Healthcare Professionals PC
Farmington Hills, MI
Saint Joseph Regional Medical Center Inc
Mishawaka, IN
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Marc Arnkoff, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$960
Largest payer
Great Lakes Medical Services, LLC
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
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 Marc Arnkoff, M.D.. To verify Marc Arnkoff, M.D.'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
Marc Arnkoff, M.D. - brand share 3.0%
Urology Physician average
3% brand-name claims vs 97% generic, on 602 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.
602
Total Claims
$23K
Total Drug Cost
166
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,368
- Total Day Supply
- 39,506
- Brand vs Generic
- 3% brand / 97% generic
- Brand Drug Cost
- $10K
- Generic Drug Cost
- $13K
- Antibiotic Claims
- 68
Patient Demographics
- Average Patient Age
- 75.6 years
- Avg HCC Risk Score
- 1.23
- Gender Split
- 8% female / 92% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Marc Arnkoff, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Tamsulosin Hcl
Tamsulosin Hcl
252 claims
- Dutasteride 99
Dutasteride
99 claims
- Finasteride 89
Finasteride
89 claims
- Ciprofloxacin Hcl 39
Ciprofloxacin Hcl
39 claims
- Sulfamethoxazole-T… 13
Sulfamethoxazole-Trimethoprim
13 claims
- Oxybutynin Chlorid… 12
Oxybutynin Chloride Er
12 claims
- Alfuzosin Hcl Er 11
Alfuzosin Hcl Er
11 claims
- Bicalutamide 11
Bicalutamide
11 claims
| Drug | Claims |
|---|---|
| Tamsulosin Hcl | 252 |
| Dutasteride | 99 |
| Finasteride | 89 |
| Ciprofloxacin Hcl | 39 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 13 |
| Oxybutynin Chloride Er Oxybutynin Chloride | 12 |
| Alfuzosin Hcl Er Alfuzosin Hcl | 11 |
| Bicalutamide | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Urology Physician Overview
How Marc Arnkoff, M.D. fits within the Urology Physician landscape nationally.
13,367
Urology Physician Providers in US
54
States with Urology Physician
1,280
Avg Claims per Provider
Marc Arnkoff, M.D.'s 602 claims are below the specialty average of 1,280.
Nearby Urology Physician Providers in Michigan
Other clinicians with the same primary specialty enrolled in Michigan, drawn from the same CMS NPPES roster as Arnkoff.
Dr. Mazen Abdelhady
M.D.
Detroit, MI
Dr. Firas Abdollah
M.D.
Detroit, MI
Dr. John Addington
PA-C
Rochester Hills, MI
Dr. Muzammil Ahmed
M.D.
Westland, MI
Abdulrahman Alruwaily
Ann Arbor, MI
Compare Urology 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 Urology 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 Marc Arnkoff, M.D.'s specialty? ▼
Marc Arnkoff, M.D. specializes in Urology Physician and practices in Southfield, Michigan. Credentials: M.D..
How much does Marc Arnkoff, M.D. prescribe under Medicare Part D? ▼
In 2023, Marc Arnkoff, M.D. wrote 602 Medicare Part D claims totaling $23K in drug costs for 166 beneficiaries.
Where is Marc Arnkoff, M.D. located? ▼
Marc Arnkoff, M.D. is located at 26400 W 12 MILE RD, Southfield, MI, 48034. Phone: (248) 569-3009.
What is Marc Arnkoff, M.D.'s NPI number? ▼
Marc Arnkoff, M.D.'s National Provider Identifier (NPI) is 1144200270, issued on 01/17/2006.
Does Marc Arnkoff, M.D. prescribe more brand-name or generic drugs? ▼
Marc Arnkoff, M.D.'s prescribing is 3% brand-name and 97% generic drugs by claim count, with $10K in brand drug costs.
How many Urology Physician providers are there in the US? ▼
There are 13,367 Urology Physician providers across 54 states in the US. The average Urology Physician provider writes 1,280 Medicare Part D claims per year.
What drugs does Marc Arnkoff, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Marc Arnkoff, M.D.'s most frequently prescribed drugs include Tamsulosin Hcl, Dutasteride, Finasteride. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Marc Arnkoff, M.D. accept Medicare? ▼
Marc Arnkoff, M.D. appears in CMS Medicare data with 602 Part D claims and 166 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Marc Arnkoff, M.D.'s credentials? ▼
Marc Arnkoff, M.D.'s NPI is 1144200270 with credentials M.D.. 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.