2026 NPPES data Nephrology Physician NPI 1821452673 M.D.
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Lyle Baker, M.D.

Nephrology Physician in Jacksonville, Florida. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 10,534 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
546
Medicare Part D claims · 135 beneficiaries · Nephrology Physician avg: 1K
Industry payments
$100.93
1 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Lyle Baker, M.D. filed 546 Medicare Part D claims in 2023 as a Nephrology Physician in Jacksonville, Florida.

546
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.

Lyle Baker, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023, across all CMS prescribers nationally

546 Top 34% higher than 66% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). This entry sits in this band. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2K+: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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)

Lyle Baker, 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 Lyle Baker, M.D.?

Quality data not reported

NPI registry status

Active

Issued 04/07/2016

NPI 1821452673

Primary specialty

Nephrology Physician

Mid-sized

10,534 US NPIs in this specialty

Medicare Part D claims

546 62% vs specialty avg

2023 prescription claims

Specialty avg: 1,454

Specialty distribution in Florida

How Nephrology Physician compares to other specialties among Florida providers

Florida providers

Largest specialties in Florida (% of in-state providers)

Behavior Technician - 16.1%Behavior Technician16.1%Mental Health Counselor - 4.8%Mental Health Counselor4.8%Family Nurse Practitioner - 4.5%Family Nurse Practitioner4.5%Pharmacist - 4.2%Pharmacist4.2%Student in an Organized Health Care Education/Training Program - 3.8%Student in an Organized Health Care Education/Training Program3.8%Physical Therapist - 3.1%Physical Therapist3.1%Nephrology Physician - 0.1%Nephrology Physician0.1%
Largest specialties in Florida (% of in-state 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:

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).

Lyle Baker, M.D. appears in the CMS NPPES registry as a Nephrology Physician provider holding M.D. credentials at 4500 SAN PABLO RD S, Jacksonville, FL, 32224, with a listed phone of (904) 953-2000. NPI 1821452673 was issued on 04/07/2016. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Baker 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 546 prescription claims written by this provider, covering 135 Medicare beneficiaries and totaling roughly $34K 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.

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

4500 SAN PABLO RD S
Jacksonville, FL 32224

Provider Details

NPI 1821452673
Specialty Nephrology Physician
Credentials M.D.
Gender Male
NPI Issued 04/07/2016

Hospital and facility affiliations

Facilities where Lyle Baker, 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.

Mayo Clinic Jacksonville
Jacksonville, FL

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

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 Lyle Baker, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$101

Largest payer

AstraZeneca Pharmaceuticals LP

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 - Florida FLDOH 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 ~75K Florida medical licensees in 2023 - they are NOT specific to Lyle Baker, M.D.. To verify Lyle Baker, M.D.'s current license status, search the FLDOH public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

480
Total board actions, Florida 2023
Across 467 cases
6.40
Actions per 1,000 licensees
Florida statewide rate
monetary fine
Most common action type
138 cases

FLDOH 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 Florida disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

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

546
Total Claims
$34K
Total Drug Cost
135
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,231
Total Day Supply
36,624
Generic Drug Cost
$17K

Patient Demographics

Average Patient Age
73.9 years
Avg HCC Risk Score
2.74
Gender Split
47% female / 53% male
Age Distribution
<65: 11, 65-74: 54, 75-84: 58, 85+: 12

Top Prescribed Drugs (Medicare Part D)

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

What Lyle Baker, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Chlorthalidone
49
Nifedipine Er
Nifedipine
44
Famotidine
37
Lisinopril
35
Amlodipine Besylate
32
Torsemide
31
Spironolactone
30
Allopurinol
26
Atorvastatin Calcium
25
Losartan Potassium
24

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

Nephrology Physician Overview

How Lyle Baker, 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

Lyle Baker, M.D.'s 546 claims are below the specialty average of 1,454.

Nearby Nephrology Physician Providers in Florida

Other clinicians with the same primary specialty enrolled in Florida, drawn from the same CMS NPPES roster as Baker.

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 Florida 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.

Frequently Asked Questions

What is Lyle Baker, M.D.'s specialty?
Lyle Baker, M.D. specializes in Nephrology Physician and practices in Jacksonville, Florida. Credentials: M.D..
How much does Lyle Baker, M.D. prescribe under Medicare Part D?
In 2023, Lyle Baker, M.D. wrote 546 Medicare Part D claims totaling $34K in drug costs for 135 beneficiaries.
Where is Lyle Baker, M.D. located?
Lyle Baker, M.D. is located at 4500 SAN PABLO RD S, Jacksonville, FL, 32224. Phone: (904) 953-2000.
What is Lyle Baker, M.D.'s NPI number?
Lyle Baker, M.D.'s National Provider Identifier (NPI) is 1821452673, issued on 04/07/2016.
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 Lyle Baker, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Lyle Baker, M.D.'s most frequently prescribed drugs include Chlorthalidone, Nifedipine Er, Famotidine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Lyle Baker, M.D. accept Medicare?
Lyle Baker, M.D. appears in CMS Medicare data with 546 Part D claims and 135 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Lyle Baker, M.D.'s credentials?
Lyle Baker, M.D.'s NPI is 1821452673 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.
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.