NPI registry status
Active
2026 NPPES data Ophthalmology Physician NPI 1801901988 MD
Verify on CMS → Joseph Feder, MD
Ophthalmology Physician in Two Rivers, 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 22,082 in Ophthalmology 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
2K
Medicare Part D claims · 451 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
88%
generic claims · 12% 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
Joseph Feder, MD filed 1,897 Medicare Part D claims in 2023 as a Ophthalmology Physician in Two Rivers, Wisconsin, prescribing 88% generic.
- 2K
- Part D claims, 2023
- 88%
- 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.
Joseph Feder, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,897 Top 17% higher than 83% 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)
Joseph Feder, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - 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 Joseph Feder, MD?
Quality data not reportedPrimary specialty
Ophthalmology Physician
Medicare Part D claims
1,897 34% vs specialty avg
Specialty distribution in Wisconsin
How Ophthalmology Physician compares to other specialties among Wisconsin 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 Ophthalmology 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).
Joseph Feder, MD appears in the CMS NPPES registry as an Ophthalmology Physician provider holding MD credentials at 5300 MEMORIAL DR, Two Rivers, WI, 54241, with a listed phone of (920) 793-7300. NPI 1801901988 was issued on 08/20/2006.
Medicare Part D records for calendar year 2023 show 1,897 prescription claims written by this provider, covering 451 Medicare beneficiaries and totaling roughly $92K in drug spend, split 12% brand-name and 88% generic by claim count.
Ophthalmology Physician is a mid-sized specialty nationwide, with 22,082 enrolled providers across 56 states and an average of 1,420 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 | 1801901988 |
|---|---|
| Specialty | Ophthalmology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/20/2006 |
Hospital and facility affiliations
Facilities where Joseph Feder, 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.
Aurora Medical Group, Inc.
Milwaukee, WI
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
Joseph Feder, MD - brand share 12.0%
Ophthalmology Physician average
12% brand-name claims vs 88% generic, on 1,897 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.
1,897
Total Claims
$92K
Total Drug Cost
451
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,719
- Total Day Supply
- 74,124
- Brand vs Generic
- 12% brand / 88% generic
- Brand Drug Cost
- $36K
- Generic Drug Cost
- $56K
- Antibiotic Claims
- 643
Patient Demographics
- Average Patient Age
- 74.2 years
- Avg HCC Risk Score
- 1.43
- Gender Split
- 62% female / 38% male
- Age Distribution
- <65: 38, 65-74: 207, 75-84: 154, 85+: 52
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Joseph Feder, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Minocycline Hcl
Minocycline Hcl
257 claims
- Latanoprost
Latanoprost
213 claims
- Brimonidine Tartrate
Brimonidine Tartrate
199 claims
- Neomycin-Polymyxin…
Neomycin-Polymyxin-Dexameth
179 claims
- Azithromycin
Azithromycin
168 claims
- Ketorolac Trometha…
Ketorolac Tromethamine
168 claims
- Tobramycin-Dexamet… 82
Tobramycin-Dexamethasone
82 claims
- Ciprofloxacin Hcl 66
Ciprofloxacin Hcl
66 claims
| Drug | Claims |
|---|---|
| Minocycline Hcl | 257 |
| Latanoprost | 213 |
| Brimonidine Tartrate | 199 |
| Neomycin-Polymyxin-Dexameth Neomycin/Polymyxin B/Dexametha | 179 |
| Azithromycin | 168 |
| Ketorolac Tromethamine | 168 |
| Tobramycin-Dexamethasone Tobramycin/Dexamethasone | 82 |
| Ciprofloxacin Hcl | 66 |
| Doxycycline Monohydrate | 63 |
| Clindamycin Hcl | 49 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Ophthalmology Physician Overview
How Joseph Feder, MD fits within the Ophthalmology Physician landscape nationally.
22,082
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider
Joseph Feder, MD's 1,897 claims are above the specialty average of 1,420.
Nearby Ophthalmology Physician Providers in Wisconsin
Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as Feder.
Dr. Nausheen Abbas
M.D.
West Bend, WI
Dr. Omar Abdelmegid
MD
Beaver Dam, WI
Dr. Jacob Abou-Hanna
MD
Madison, WI
Dr. Julia Agapov
DO
Madison, WI
Dr. Swati Agarwal-Sinha
MD
Green Bay, WI
Compare Ophthalmology 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 Ophthalmology 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 Joseph Feder, MD's specialty? ▼
Joseph Feder, MD specializes in Ophthalmology Physician and practices in Two Rivers, Wisconsin. Credentials: MD.
How much does Joseph Feder, MD prescribe under Medicare Part D? ▼
In 2023, Joseph Feder, MD wrote 1,897 Medicare Part D claims totaling $92K in drug costs for 451 beneficiaries.
Where is Joseph Feder, MD located? ▼
Joseph Feder, MD is located at 5300 MEMORIAL DR, Two Rivers, WI, 54241. Phone: (920) 793-7300.
What is Joseph Feder, MD's NPI number? ▼
Joseph Feder, MD's National Provider Identifier (NPI) is 1801901988, issued on 08/20/2006.
Does Joseph Feder, MD prescribe more brand-name or generic drugs? ▼
Joseph Feder, MD's prescribing is 12% brand-name and 88% generic drugs by claim count, with $36K in brand drug costs.
How many Ophthalmology Physician providers are there in the US? ▼
There are 22,082 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
What drugs does Joseph Feder, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Joseph Feder, MD's most frequently prescribed drugs include Minocycline Hcl, Latanoprost, Brimonidine Tartrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Joseph Feder, MD accept Medicare? ▼
Joseph Feder, MD appears in CMS Medicare data with 1,897 Part D claims and 451 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Joseph Feder, MD's credentials? ▼
Joseph Feder, MD's NPI is 1801901988 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.