NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1366425357 M.D.
Verify on CMS → Kenneth Bernstein, M.D.
Family Medicine Physician in Madera, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 147,760 in Family Medicine 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
3K
Medicare Part D claims · 167 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
83%
generic claims · 15% 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
Kenneth Bernstein, M.D. filed 2,601 Medicare Part D claims in 2023 as a Family Medicine Physician in Madera, California, prescribing 83% generic.
- 3K
- Part D claims, 2023
- 83%
- 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.
Kenneth Bernstein, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,601 Top 13% higher than 87% 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)
Kenneth Bernstein, M.D. 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 Kenneth Bernstein, M.D.?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
2,601 24% vs specialty avg
Specialty distribution in California
How Family Medicine Physician compares to other specialties among California 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 Family Medicine 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).
Kenneth Bernstein, M.D. appears in the CMS NPPES registry as a Family Medicine Physician provider holding M.D. credentials at 344 E 6TH ST, Madera, CA, 93638, with a listed phone of (559) 664-4000. NPI 1366425357 was issued on 11/22/2005.
Medicare Part D records for calendar year 2023 show 2,601 prescription claims written by this provider, covering 167 Medicare beneficiaries and totaling roughly $273K in drug spend, split 15% brand-name and 83% generic by claim count, with an opioid prescribing rate of 6.4%.
Family Medicine Physician is a high-volume specialty nationwide, with 147,760 enrolled providers across 56 states and an average of 3,418 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 | 1366425357 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 11/22/2005 |
Hospital and facility affiliations
Facilities where Kenneth Bernstein, 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.
Camarena Health
Madera, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - California MBC 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 ~150K California medical licensees in 2023 - they are NOT specific to Kenneth Bernstein, M.D.. To verify Kenneth Bernstein, M.D.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC 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 California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Kenneth Bernstein, M.D. - brand share 15.0%
Family Medicine Physician average
15% brand-name claims vs 83% generic, on 2,601 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.
2,601
Total Claims
$273K
Total Drug Cost
167
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,975
- Total Day Supply
- 145,188
- Brand vs Generic
- 15% brand / 83% generic
- Brand Drug Cost
- $217K
- Generic Drug Cost
- $54K
- Opioid Claims
- 166 (6.4% rate)
- Antibiotic Claims
- 56
Patient Demographics
- Average Patient Age
- 72.2 years
- Avg HCC Risk Score
- 1.17
- Gender Split
- 56% female / 44% male
- Age Distribution
- <65: 25, 65-74: 69, 75-84: 58, 85+: 15
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Kenneth Bernstein, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
120 claims
- Atorvastatin Calcium
Atorvastatin Calcium
114 claims
- Levothyroxine Sodium
Levothyroxine Sodium
99 claims
- Metformin Hcl
Metformin Hcl
97 claims
- Amlodipine Besylate
Amlodipine Besylate
85 claims
- Gabapentin
Gabapentin
80 claims
- Lisinopril
Lisinopril
72 claims
- Furosemide
Furosemide
68 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 120 |
| Atorvastatin Calcium | 114 |
| Levothyroxine Sodium | 99 |
| Metformin Hcl | 97 |
| Amlodipine Besylate | 85 |
| Gabapentin | 80 |
| Lisinopril | 72 |
| Furosemide | 68 |
| Simvastatin | 60 |
| Omeprazole | 59 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Kenneth Bernstein, M.D. fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Kenneth Bernstein, M.D.'s 2,601 claims are below the specialty average of 3,418.
Nearby Family Medicine Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Bernstein.
Dr. Omer Aba-Omer
MD
Santa Monica, CA
Dr. Michelle Ababa
MD
Wilmington, CA
Dr. Anna Tzeitel Abalos
MD
Roseville, CA
Dr. Adan Abarca
MD
Anaheim, CA
Dr. Lorraine Abate
M.D.
Sacramento, CA
Compare Family Medicine 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 California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Family Medicine 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 Kenneth Bernstein, M.D.'s specialty? ▼
Kenneth Bernstein, M.D. specializes in Family Medicine Physician and practices in Madera, California. Credentials: M.D..
How much does Kenneth Bernstein, M.D. prescribe under Medicare Part D? ▼
In 2023, Kenneth Bernstein, M.D. wrote 2,601 Medicare Part D claims totaling $273K in drug costs for 167 beneficiaries.
Where is Kenneth Bernstein, M.D. located? ▼
Kenneth Bernstein, M.D. is located at 344 E 6TH ST, Madera, CA, 93638. Phone: (559) 664-4000.
What is Kenneth Bernstein, M.D.'s NPI number? ▼
Kenneth Bernstein, M.D.'s National Provider Identifier (NPI) is 1366425357, issued on 11/22/2005.
Does Kenneth Bernstein, M.D. prescribe more brand-name or generic drugs? ▼
Kenneth Bernstein, M.D.'s prescribing is 15% brand-name and 83% generic drugs by claim count, with $217K in brand drug costs.
Does Kenneth Bernstein, M.D. prescribe opioids? ▼
Yes, Kenneth Bernstein, M.D. had 166 opioid claims in 2023 with an opioid prescribing rate of 6.4%.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Kenneth Bernstein, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Kenneth Bernstein, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Atorvastatin Calcium, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Kenneth Bernstein, M.D. accept Medicare? ▼
Kenneth Bernstein, M.D. appears in CMS Medicare data with 2,601 Part D claims and 167 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Kenneth Bernstein, M.D.'s credentials? ▼
Kenneth Bernstein, M.D.'s NPI is 1366425357 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.