2026 NPPES data Family Medicine Physician NPI 1649705138
Verify on CMS →

Megan Ishikawa

Family Medicine Physician in West Lafayette, Indiana. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 147,640 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 · 311 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
88%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Megan Ishikawa filed 3,156 Medicare Part D claims in 2023 as a Family Medicine Physician in West Lafayette, Indiana, prescribing 88% generic.

3K
Part D claims, 2023
88%
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.

Megan Ishikawa's Medicare Part D volume vs every U.S. prescriber

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

3,156 Top 11% higher than 89% 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%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2K+: 213,991 prescribers (16%). This entry sits in this band. 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)

Megan Ishikawa practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - 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 Megan Ishikawa?

Quality data not reported

NPI registry status

Active

Issued 04/22/2017

NPI 1649705138

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

3,156 8% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

Specialty distribution in Indiana

How Family Medicine Physician compares to other specialties among Indiana providers

Indiana providers

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

Behavior Technician - 13.6%Behavior Technician13.6%Student in an Organized Health Care Education/Training Program - 4.7%Student in an Organized Health Care Education/Training Program4.7%Pharmacist - 4.3%Pharmacist4.3%Family Nurse Practitioner - 4.2%Family Nurse Practitioner4.2%Clinical Social Worker - 4.2%Clinical Social Worker4.2%Mental Health Counselor - 4.1%Mental Health Counselor4.1%Family Medicine Physician - 2.8%Family Medicine Physician2.8%
Largest specialties in Indiana (% 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 Family Medicine 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).

Megan Ishikawa appears in the CMS NPPES registry as a Family Medicine Physician provider at 253 SAGAMORE PKWY W, West Lafayette, IN, 47906, with a listed phone of (765) 448-8000. NPI 1649705138 was issued on 04/22/2017. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Ishikawa 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 3,156 prescription claims written by this provider, covering 311 Medicare beneficiaries and totaling roughly $315K in drug spend, split 11% 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.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 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

253 SAGAMORE PKWY W
West Lafayette, IN 47906

Provider Details

NPI 1649705138
Specialty Family Medicine Physician
Gender Female
NPI Issued 04/22/2017

Hospital and facility affiliations

Facilities where Megan Ishikawa 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.

Arnett Clinic LLC
West Lafayette, IN
IU Health Medical Group LLC
Indianapolis, IN

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

Brand vs generic prescribing mix · Typical

Megan Ishikawa - brand share 11.0%
Family Medicine Physician average

11% brand-name claims vs 88% generic, on 3,156 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.

3,156
Total Claims
$315K
Total Drug Cost
311
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
7,468
Total Day Supply
218,984
Brand vs Generic
11% brand / 88% generic
Brand Drug Cost
$250K
Generic Drug Cost
$64K
Antibiotic Claims
50

Patient Demographics

Average Patient Age
71.4 years
Avg HCC Risk Score
1.02
Gender Split
72% female / 28% male
Age Distribution
<65: 38, 65-74: 174, 75-84: 73, 85+: 26

Top Prescribed Drugs (Medicare Part D)

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

What Megan Ishikawa 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
Atorvastatin Calcium
283
Levothyroxine Sodium
184
Lisinopril
176
Amlodipine Besylate
144
Losartan Potassium
101
Omeprazole
83
Pantoprazole Sodium
83
Pravastatin Sodium
75
Fluoxetine Hcl
60
Albuterol Sulfate Hfa
Albuterol Sulfate
58

* 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 Megan Ishikawa fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

Megan Ishikawa's 3,156 claims are below the specialty average of 3,418.

Nearby Family Medicine Physician Providers in Indiana

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

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 Indiana 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.

Frequently Asked Questions

What is Megan Ishikawa's specialty?
Megan Ishikawa specializes in Family Medicine Physician and practices in West Lafayette, Indiana.
How much does Megan Ishikawa prescribe under Medicare Part D?
In 2023, Megan Ishikawa wrote 3,156 Medicare Part D claims totaling $315K in drug costs for 311 beneficiaries.
Where is Megan Ishikawa located?
Megan Ishikawa is located at 253 SAGAMORE PKWY W, West Lafayette, IN, 47906. Phone: (765) 448-8000.
What is Megan Ishikawa's NPI number?
Megan Ishikawa's National Provider Identifier (NPI) is 1649705138, issued on 04/22/2017.
Does Megan Ishikawa prescribe more brand-name or generic drugs?
Megan Ishikawa's prescribing is 11% brand-name and 88% generic drugs by claim count, with $250K in brand drug costs.
How many Family Medicine Physician providers are there in the US?
There are 147,640 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 Megan Ishikawa prescribe most often?
Based on 2023 Medicare Part D data, Megan Ishikawa's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Megan Ishikawa accept Medicare?
Megan Ishikawa appears in CMS Medicare data with 3,156 Part D claims and 311 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Megan Ishikawa's credentials?
Megan Ishikawa's NPI is 1649705138. 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.