NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1508831140 M.D.
Verify on CMS → Andrew Johnstone, M.D.
Family Medicine Physician in Indianapolis, 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
5K
Medicare Part D claims · 219 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
89%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$320.39
15 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
Andrew Johnstone, M.D. filed 4,747 Medicare Part D claims in 2023 as a Family Medicine Physician in Indianapolis, Indiana, prescribing 89% generic.
- 5K
- Part D claims, 2023
- 89%
- generic prescribing
- $320.39
- 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.
Andrew Johnstone, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
4,747 Top 7% higher than 93% 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)
Andrew Johnstone, 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 Andrew Johnstone, M.D.?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
4,747 39% vs specialty avg
Specialty distribution in Indiana
How Family Medicine Physician compares to other specialties among Indiana 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:
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).
Andrew Johnstone, M.D. appears in the CMS NPPES registry as a Family Medicine Physician provider holding M.D. credentials at 3711 E SOUTHPORT RD, Indianapolis, IN, 46227, with a listed phone of (317) 884-3725. NPI 1508831140 was issued on 02/17/2006.
Medicare Part D records for calendar year 2023 show 4,747 prescription claims written by this provider, covering 219 Medicare beneficiaries and totaling roughly $452K in drug spend, split 10% brand-name and 89% generic by claim count, with an opioid prescribing rate of 16.8%.
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
Provider Details
| NPI | 1508831140 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 02/17/2006 |
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 Andrew Johnstone, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$320
Largest payer
Esperion Therapeutics, 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.
Brand vs generic prescribing mix · Typical
Andrew Johnstone, M.D. - brand share 10.0%
Family Medicine Physician average
10% brand-name claims vs 89% generic, on 4,747 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.
4,747
Total Claims
$452K
Total Drug Cost
219
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 9,245
- Total Day Supply
- 267,508
- Brand vs Generic
- 10% brand / 89% generic
- Brand Drug Cost
- $315K
- Generic Drug Cost
- $136K
- Opioid Claims
- 798 (16.8% rate)
- Antibiotic Claims
- 200
Patient Demographics
- Average Patient Age
- 70.9 years
- Avg HCC Risk Score
- 0.96
- Gender Split
- 57% female / 43% male
- Age Distribution
- <65: 36, 65-74: 111, 75-84: 61, 85+: 11
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Andrew Johnstone, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
336 claims
- Alprazolam
Alprazolam
300 claims
- Oxycodone Hcl
Oxycodone Hcl
224 claims
- Levothyroxine Sodium
Levothyroxine Sodium
171 claims
- Atorvastatin Calcium
Atorvastatin Calcium
140 claims
- Oxycodone-Acetamin…
Oxycodone-Acetaminophen
139 claims
- Rosuvastatin Calcium 111
Rosuvastatin Calcium
111 claims
- Anastrozole 110
Anastrozole
110 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 336 |
| Alprazolam | 300 |
| Oxycodone Hcl | 224 |
| Levothyroxine Sodium | 171 |
| Atorvastatin Calcium | 140 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 139 |
| Rosuvastatin Calcium | 111 |
| Anastrozole | 110 |
| Lisinopril | 109 |
| Cyclobenzaprine Hcl | 87 |
* 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 Andrew Johnstone, M.D. 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
Andrew Johnstone, M.D.'s 4,747 claims are above 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 Johnstone.
Dr. Faryaal Aamir
MD
Boonville, IN
Dr. Troy Abbott
MD
Muncie, IN
Dr. Musa Abdalla
M. D.
Lagrange, IN
Dr. Azra Abdullah
M.D.
Indianapolis, IN
Dr. Daniel Abel
M.D.
Mishawaka, IN
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.
Healthcare Guides
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
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Frequently Asked Questions
What is Andrew Johnstone, M.D.'s specialty? ▼
Andrew Johnstone, M.D. specializes in Family Medicine Physician and practices in Indianapolis, Indiana. Credentials: M.D..
How much does Andrew Johnstone, M.D. prescribe under Medicare Part D? ▼
In 2023, Andrew Johnstone, M.D. wrote 4,747 Medicare Part D claims totaling $452K in drug costs for 219 beneficiaries.
Where is Andrew Johnstone, M.D. located? ▼
Andrew Johnstone, M.D. is located at 3711 E SOUTHPORT RD, Indianapolis, IN, 46227. Phone: (317) 884-3725.
What is Andrew Johnstone, M.D.'s NPI number? ▼
Andrew Johnstone, M.D.'s National Provider Identifier (NPI) is 1508831140, issued on 02/17/2006.
Does Andrew Johnstone, M.D. prescribe more brand-name or generic drugs? ▼
Andrew Johnstone, M.D.'s prescribing is 10% brand-name and 89% generic drugs by claim count, with $315K in brand drug costs.
Does Andrew Johnstone, M.D. prescribe opioids? ▼
Yes, Andrew Johnstone, M.D. had 798 opioid claims in 2023 with an opioid prescribing rate of 16.8%.
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 Andrew Johnstone, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Andrew Johnstone, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Alprazolam, Oxycodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Andrew Johnstone, M.D. accept Medicare? ▼
Andrew Johnstone, M.D. appears in CMS Medicare data with 4,747 Part D claims and 219 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Andrew Johnstone, M.D.'s credentials? ▼
Andrew Johnstone, M.D.'s NPI is 1508831140 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.