2026 NPPES data Nephrology Physician NPI 1457435646 M.D.
Verify on CMS →

STEVEN KIM, M.D.

Nephrology Physician in EAST BRUNSWICK, New Jersey. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
2K
Medicare Part D claims · 249 beneficiaries · Nephrology Physician avg: 1K
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
19.4871/100
▼ 64 pts below national avg 83.1 · [object Object]
What the federal data reveals: STEVEN KIM, M.D. is a Nephrology Physician ([object Object]) practicing in EAST BRUNSWICK, New Jersey with a Medicare Part D prescribing footprint of 2K claims across 249 beneficiaries — 12% brand-name prescribing . Their CMS MIPS Final Score of 19.4871/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: STEVEN KIM, M.D. reported a CMS MIPS final score of 19.4871 out of 100, below the 83.1 national average, and filed 1,624 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

STEVEN KIM, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

STEVEN KIM, M.D. at a glance

Below national average

NPI registry status

Active

Issued 10/24/2006

NPI 1457435646

Primary specialty

Nephrology Physician

Mid-sized

10,534 US NPIs in this specialty

Medicare Part D claims

1,624 12% vs specialty avg

2023 prescription claims

Specialty avg: 1,454

MIPS final score

19.4871/100 63.612899999999996% pts

Below average band

vs 83.1 national avg

Specialty distribution in New Jersey

How Nephrology Physician compares to other specialties among New Jersey providers

New Jersey providers

Nephrology Physician share within New Jersey

1. Nephrology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Nephrology Physician share within New Jersey

Medicare quality performance — MIPS

STEVEN KIM, M.D.'s 2023 MIPS final score plotted against the Nephrology Physician national average

Below national average
MIPS Final Score
19.4871/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Nephrology Physician) — 19.4871/100 vs national avg 83.1

0%100%National avg83%19.5%
MIPS final score (Nephrology Physician) — 19.4871/100 vs national avg 83.1

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).

STEVEN KIM, M.D. is a Nephrology Physician provider practicing in EAST BRUNSWICK, New Jersey, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1457435646. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

STEVEN KIM, M.D. appears in the CMS NPPES registry as a Nephrology Physician provider holding M.D. credentials at D5 BRIER HILL CT, EAST BRUNSWICK, NJ, 08816, with a listed phone of (732) 432-7400. NPI 1457435646 was issued on 10/24/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KIM most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 1,624 prescription claims written by this provider, covering 249 Medicare beneficiaries and totaling roughly $122K in drug spend, split 12% brand-name and 88% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 19.4871/100 for the 2023 performance year (Quality 0, Cost 64.957), compared with the national average of 83.1.

Nephrology Physician is a mid-sized specialty nationwide, with 10,534 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

D5 BRIER HILL CT
EAST BRUNSWICK, NJ 08816

Provider Details

NPI 1457435646
Specialty Nephrology Physician
Credentials M.D.
Gender Male
NPI Issued 10/24/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

19.4871
Final Score
Avg: 83.1
0
Quality
64.957
Cost

Reporting: Individual

Brand vs generic prescribing mix · Typical

STEVEN KIM, M.D. — brand share 12.0%
Specialty average (est.)

12% brand-name claims vs 88% generic, on 1,624 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.

1,624
Total Claims
$122K
Total Drug Cost
249
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,391
Total Day Supply
127,985
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$62K
Generic Drug Cost
$60K
Antibiotic Claims
40

Patient Demographics

Average Patient Age
78.0 years
Avg HCC Risk Score
2.41
Gender Split
45% female / 55% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Amlodipine Besylate
259
Prosol
Parenteral Amino Acid 20% No.1
106
Allopurinol
95
Atorvastatin Calcium
71
Hydrochlorothiazide
68
Metoprolol Succinate
60
Hydralazine Hcl
57
Losartan Potassium
55
Olmesartan Medoxomil
47
Rosuvastatin Calcium
40

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Nephrology Physician Overview

How STEVEN KIM, M.D. fits within the Nephrology Physician landscape nationally.

10,534
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider

STEVEN KIM, M.D.'s 1,624 claims are above the specialty average of 1,454.

Nearby Nephrology Physician Providers in New Jersey

Other clinicians with the same primary specialty enrolled in New Jersey, drawn from the same CMS NPPES roster as KIM.

Compare Nephrology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is STEVEN KIM, M.D.'s specialty?
STEVEN KIM, M.D. specializes in Nephrology Physician and practices in EAST BRUNSWICK, New Jersey. Credentials: M.D..
How much does STEVEN KIM, M.D. prescribe under Medicare Part D?
In 2023, STEVEN KIM, M.D. wrote 1,624 Medicare Part D claims totaling $122K in drug costs for 249 beneficiaries.
What is STEVEN KIM, M.D.'s Medicare quality score?
STEVEN KIM, M.D. has a CMS MIPS Final Score of 19.4871/100 (Quality: 0, Cost: 64.957). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is STEVEN KIM, M.D. located?
STEVEN KIM, M.D. is located at D5 BRIER HILL CT, EAST BRUNSWICK, NJ, 08816. Phone: (732) 432-7400.
What is STEVEN KIM, M.D.'s NPI number?
STEVEN KIM, M.D.'s National Provider Identifier (NPI) is 1457435646, issued on 10/24/2006.
Does STEVEN KIM, M.D. prescribe more brand-name or generic drugs?
STEVEN KIM, M.D.'s prescribing is 12% brand-name and 88% generic drugs by claim count, with $62K in brand drug costs.
How many Nephrology Physician providers are there in the US?
There are 10,534 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 STEVEN KIM, M.D. prescribe most often?
Based on 2023 Medicare Part D data, STEVEN KIM, M.D.'s most frequently prescribed drugs include Amlodipine Besylate, Prosol, Allopurinol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STEVEN KIM, M.D. accept Medicare?
STEVEN KIM, M.D. appears in CMS Medicare data with 1,624 Part D claims and 249 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STEVEN KIM, M.D.'s credentials?
STEVEN KIM, M.D.'s NPI is 1457435646 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

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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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