NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1346236205 M.D.
Verify on CMS → Jack Rubin, M.D.
Nephrology Physician in Inglewood, 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 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
1K
Medicare Part D claims · 101 beneficiaries · Nephrology Physician avg: 1K
Generic prescribing
70%
generic claims · 27% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$7.4K
16 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
Jack Rubin, M.D. filed 1,278 Medicare Part D claims in 2023 as a Nephrology Physician in Inglewood, California, prescribing 70% generic.
- 1K
- Part D claims, 2023
- 70%
- generic prescribing
- $7.4K
- industry payments (Sunshine Act)
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.
Jack Rubin, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,278 Top 22% higher than 78% 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)
Jack Rubin, M.D. 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 Jack Rubin, M.D.?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
1,278 12% vs specialty avg
Specialty distribution in California
How Nephrology 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 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).
Jack Rubin, M.D. appears in the CMS NPPES registry as a Nephrology Physician provider holding M.D. credentials at 575 E HARDY ST, Inglewood, CA, 90301, with a listed phone of (310) 671-0488. NPI 1346236205 was issued on 09/26/2005.
Medicare Part D records for calendar year 2023 show 1,278 prescription claims written by this provider, covering 101 Medicare beneficiaries and totaling roughly $431K in drug spend, split 27% brand-name and 70% generic by claim count, with an opioid prescribing rate of 1.2%.
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 | 1346236205 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 09/26/2005 |
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 Jack Rubin, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$7.4K
Largest payer
AngioDynamics, Inc.
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 - 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 Jack Rubin, M.D.. To verify Jack Rubin, 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 · Above average
Jack Rubin, M.D. - brand share 27.0%
Nephrology Physician average
27% brand-name claims vs 70% generic, on 1,278 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.
1,278
Total Claims
$431K
Total Drug Cost
101
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,755
- Total Day Supply
- 81,288
- Brand vs Generic
- 27% brand / 70% generic
- Brand Drug Cost
- $381K
- Generic Drug Cost
- $48K
- Opioid Claims
- 15 (1.2% rate)
- Antibiotic Claims
- 15
Patient Demographics
- Average Patient Age
- 70.3 years
- Avg HCC Risk Score
- 4.70
- Gender Split
- 45% female / 55% male
- Age Distribution
- <65: 25, 65-74: 39, 75-84: 24, 85+: 13
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Jack Rubin, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Furosemide
Furosemide
111 claims
- Farxiga
Farxiga
81 claims
- Losartan Potassium
Losartan Potassium
81 claims
- Amlodipine Besylate
Amlodipine Besylate
75 claims
- Atorvastatin Calcium
Atorvastatin Calcium
53 claims
- Rayaldee
Rayaldee
50 claims
- Kerendia
Kerendia
48 claims
- Doxazosin Mesylate 43
Doxazosin Mesylate
43 claims
| Drug | Claims |
|---|---|
| Furosemide | 111 |
| Farxiga Dapagliflozin Propanediol | 81 |
| Losartan Potassium | 81 |
| Amlodipine Besylate | 75 |
| Atorvastatin Calcium | 53 |
| Rayaldee Calcifediol | 50 |
| Kerendia Finerenone | 48 |
| Doxazosin Mesylate | 43 |
| Rosuvastatin Calcium | 35 |
| Sevelamer Carbonate | 28 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Jack Rubin, M.D. 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
Jack Rubin, M.D.'s 1,278 claims are below the specialty average of 1,454.
Nearby Nephrology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Rubin.
Dr. Antoine Abcar
MD
Los Angeles, CA
Dr. Basmah Abdalla
M.D.
Los Angeles, CA
Dr. Omaran Abdeen
M.D.
Mission Hills, CA
Dr. Anas Abou-Ismail
MD
Palm Springs, CA
Dr. Sreedhar Adapa
M.D.
Visalia, CA
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 California 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 Jack Rubin, M.D.'s specialty? ▼
Jack Rubin, M.D. specializes in Nephrology Physician and practices in Inglewood, California. Credentials: M.D..
How much does Jack Rubin, M.D. prescribe under Medicare Part D? ▼
In 2023, Jack Rubin, M.D. wrote 1,278 Medicare Part D claims totaling $431K in drug costs for 101 beneficiaries.
Where is Jack Rubin, M.D. located? ▼
Jack Rubin, M.D. is located at 575 E HARDY ST, Inglewood, CA, 90301. Phone: (310) 671-0488.
What is Jack Rubin, M.D.'s NPI number? ▼
Jack Rubin, M.D.'s National Provider Identifier (NPI) is 1346236205, issued on 09/26/2005.
Does Jack Rubin, M.D. prescribe more brand-name or generic drugs? ▼
Jack Rubin, M.D.'s prescribing is 27% brand-name and 70% generic drugs by claim count, with $381K in brand drug costs.
Does Jack Rubin, M.D. prescribe opioids? ▼
Yes, Jack Rubin, M.D. had 15 opioid claims in 2023 with an opioid prescribing rate of 1.2%.
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 Jack Rubin, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Jack Rubin, M.D.'s most frequently prescribed drugs include Furosemide, Farxiga, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jack Rubin, M.D. accept Medicare? ▼
Jack Rubin, M.D. appears in CMS Medicare data with 1,278 Part D claims and 101 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jack Rubin, M.D.'s credentials? ▼
Jack Rubin, M.D.'s NPI is 1346236205 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.