2026 NPPES data Nephrology Physician NPI 1598746117 MD
Verify on CMS →

ALFRED JACOBS, JR, MD

Nephrology Physician in LOUISVILLE, Kentucky. 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
276
Medicare Part D claims · 47 beneficiaries · Nephrology Physician avg: 1K
MIPS score
73.1977/100
▼ 10 pts below national avg 83.1 · [object Object]

What the federal data shows

ALFRED JACOBS, JR, MD reported a CMS MIPS final score of 73.1977/100 — below the 83.1 national average — and filed 276 Medicare Part D claims in 2023.

73.1977/100
MIPS score · -10 vs avg
276
Part D claims, 2023
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.

ALFRED JACOBS, JR, MD's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

73 11th percentile higher than 11% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). This entry sits in this band. 80–90: 129,887 scored providers (27%). Above this entry. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

Board certification likely (heuristic — not verified)

ALFRED JACOBS, JR, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 ALFRED JACOBS, JR, MD?

Below national average

NPI registry status

Active

Issued 11/10/2005

NPI 1598746117

Primary specialty

Nephrology Physician

Mid-sized

10,534 US NPIs in this specialty

Medicare Part D claims

276 81% vs specialty avg

2023 prescription claims

Specialty avg: 1,454

MIPS final score

73.1977/100 9.902299999999997% pts

Mid-tier band

vs 83.1 national avg

Specialty distribution in Kentucky

How Nephrology Physician compares to other specialties among Kentucky providers

Kentucky providers

Nephrology Physician share within Kentucky

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

Medicare quality performance — MIPS

ALFRED JACOBS, JR, MD's 2023 MIPS final score plotted against the Nephrology Physician national average

Below national average
MIPS Final Score
73.1977/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Nephrology Physician) — 73.1977/100 vs national avg 83.1

0%100%National avg83%73.2%
MIPS final score (Nephrology Physician) — 73.1977/100 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).

ALFRED JACOBS, JR, MD appears in the CMS NPPES registry as a Nephrology Physician provider holding MD credentials at 615 S PRESTON ST, LOUISVILLE, KY, 40202, with a listed phone of (502) 852-5757. NPI 1598746117 was issued on 11/10/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what JACOBS, JR 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 276 prescription claims written by this provider, covering 47 Medicare beneficiaries and totaling roughly $18K in drug spend. 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 73.1977/100 for the 2023 performance year (Quality 58.7401, Cost 51.919), 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

615 S PRESTON ST
LOUISVILLE, KY 40202

Provider Details

NPI 1598746117
Specialty Nephrology Physician
Credentials MD
Gender Male
NPI Issued 11/10/2005

CMS Quality Score (MIPS)

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

73.1977
Final Score
Avg: 83.1
58.7401
Quality
51.919
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where ALFRED JACOBS, JR, 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.

UNIVERSITY OF LOUISVILLE PHYSICIANS INC
LOUISVILLE, KY

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

276
Total Claims
$18K
Total Drug Cost
47
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
501
Total Day Supply
14,889
Generic Drug Cost
$4K

Patient Demographics

Average Patient Age
67.4 years
Avg HCC Risk Score
4.22
Gender Split
60% female / 40% male
Age Distribution
<65: 16, 65-74: 16, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Claim-Specialty
Amlodipine Besylate
N/A

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

Nephrology Physician Overview

How ALFRED JACOBS, JR, MD 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

ALFRED JACOBS, JR, MD's 276 claims are below the specialty average of 1,454.

Nearby Nephrology Physician Providers in Kentucky

Other clinicians with the same primary specialty enrolled in Kentucky, drawn from the same CMS NPPES roster as JACOBS, JR.

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

Frequently Asked Questions

What is ALFRED JACOBS, JR, MD's specialty?
ALFRED JACOBS, JR, MD specializes in Nephrology Physician and practices in LOUISVILLE, Kentucky. Credentials: MD.
How much does ALFRED JACOBS, JR, MD prescribe under Medicare Part D?
In 2023, ALFRED JACOBS, JR, MD wrote 276 Medicare Part D claims totaling $18K in drug costs for 47 beneficiaries.
What is ALFRED JACOBS, JR, MD's Medicare quality score?
ALFRED JACOBS, JR, MD has a CMS MIPS Final Score of 73.1977/100 (Quality: 58.7401, Cost: 51.919). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is ALFRED JACOBS, JR, MD located?
ALFRED JACOBS, JR, MD is located at 615 S PRESTON ST, LOUISVILLE, KY, 40202. Phone: (502) 852-5757.
What is ALFRED JACOBS, JR, MD's NPI number?
ALFRED JACOBS, JR, MD's National Provider Identifier (NPI) is 1598746117, issued on 11/10/2005.
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 ALFRED JACOBS, JR, MD prescribe most often?
Based on 2023 Medicare Part D data, ALFRED JACOBS, JR, MD's most frequently prescribed drugs include Claim-Specialty. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ALFRED JACOBS, JR, MD accept Medicare?
ALFRED JACOBS, JR, MD appears in CMS Medicare data with 276 Part D claims and 47 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ALFRED JACOBS, JR, MD's credentials?
ALFRED JACOBS, JR, MD's NPI is 1598746117 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

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