NPI registry status
Active
2026 NPPES data Urology Physician NPI 1528227923 MD
Verify on CMS → Timothy Masterson, MD
Urology 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 13,350 in Urology 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
324
Medicare Part D claims · 112 beneficiaries · Urology Physician avg: 1K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Timothy Masterson, MD filed 324 Medicare Part D claims in 2023 as a Urology Physician in Indianapolis, Indiana, prescribing 91% generic.
- 324
- Part D claims, 2023
- 91%
- 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.
Timothy Masterson, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
324 Top 43% higher than 57% 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 certification likely (heuristic, not verified)
Timothy Masterson, MD 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 Timothy Masterson, MD?
Quality data not reportedPrimary specialty
Urology Physician
Medicare Part D claims
324 75% vs specialty avg
Specialty distribution in Indiana
How Urology 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 Urology 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).
Timothy Masterson, MD appears in the CMS NPPES registry as a Urology Physician provider holding MD credentials at 535 BARNHILL DR, Indianapolis, IN, 46202, with a listed phone of (317) 278-7560. NPI 1528227923 was issued on 06/02/2008.
Medicare Part D records for calendar year 2023 show 324 prescription claims written by this provider, covering 112 Medicare beneficiaries and totaling roughly $17K in drug spend, split 9% brand-name and 91% generic by claim count, with an opioid prescribing rate of 6.8%.
Urology Physician is a mid-sized specialty nationwide, with 13,350 enrolled providers across 54 states and an average of 1,280 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 | 1528227923 |
|---|---|
| Specialty | Urology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/02/2008 |
Hospital and facility affiliations
Facilities where Timothy Masterson, 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.
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 · Generic-heavy
Timothy Masterson, MD - brand share 9.0%
Urology Physician average
9% brand-name claims vs 91% generic, on 324 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.
324
Total Claims
$17K
Total Drug Cost
112
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 555
- Total Day Supply
- 13,528
- Brand vs Generic
- 9% brand / 91% generic
- Brand Drug Cost
- $11K
- Generic Drug Cost
- $6K
- Opioid Claims
- 22 (6.8% rate)
- Antibiotic Claims
- 102
Patient Demographics
- Average Patient Age
- 73.1 years
- Avg HCC Risk Score
- 1.92
- Gender Split
- 21% female / 79% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Timothy Masterson, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Tamsulosin Hcl
Tamsulosin Hcl
92 claims
- Sulfamethoxazole-T…
Sulfamethoxazole-Trimethoprim
48 claims
- Oxybutynin Chloride 22
Oxybutynin Chloride
22 claims
- Nitrofurantoin Mon… 19
Nitrofurantoin Mono-Macro
19 claims
- Finasteride 18
Finasteride
18 claims
- Ciprofloxacin Hcl 16
Ciprofloxacin Hcl
16 claims
- Tramadol Hcl 16
Tramadol Hcl
16 claims
- Oxybutynin Chlorid… 14
Oxybutynin Chloride Er
14 claims
| Drug | Claims |
|---|---|
| Tamsulosin Hcl | 92 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 48 |
| Oxybutynin Chloride | 22 |
| Nitrofurantoin Mono-Macro Nitrofurantoin Monohyd/M-Cryst | 19 |
| Finasteride | 18 |
| Ciprofloxacin Hcl | 16 |
| Tramadol Hcl | 16 |
| Oxybutynin Chloride Er Oxybutynin Chloride | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Urology Physician Overview
How Timothy Masterson, MD fits within the Urology Physician landscape nationally.
13,350
Urology Physician Providers in US
54
States with Urology Physician
1,280
Avg Claims per Provider
Timothy Masterson, MD's 324 claims are below the specialty average of 1,280.
Nearby Urology Physician Providers in Indiana
Other clinicians with the same primary specialty enrolled in Indiana, drawn from the same CMS NPPES roster as Masterson.
Dr. Daniel Abbott
M.D.
Lafayette, IN
Dr. Deepak Agarwal
M.D.
Indianapolis, IN
Andre Alabd
Indianapolis, IN
Dr. Shaheen Alanee
MD
Lafayette, IN
Dr. Hassan Alsheik
M.D.
Munster, IN
Compare Urology 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 Urology 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.
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Frequently Asked Questions
What is Timothy Masterson, MD's specialty? ▼
Timothy Masterson, MD specializes in Urology Physician and practices in Indianapolis, Indiana. Credentials: MD.
How much does Timothy Masterson, MD prescribe under Medicare Part D? ▼
In 2023, Timothy Masterson, MD wrote 324 Medicare Part D claims totaling $17K in drug costs for 112 beneficiaries.
Where is Timothy Masterson, MD located? ▼
Timothy Masterson, MD is located at 535 BARNHILL DR, Indianapolis, IN, 46202. Phone: (317) 278-7560.
What is Timothy Masterson, MD's NPI number? ▼
Timothy Masterson, MD's National Provider Identifier (NPI) is 1528227923, issued on 06/02/2008.
Does Timothy Masterson, MD prescribe more brand-name or generic drugs? ▼
Timothy Masterson, MD's prescribing is 9% brand-name and 91% generic drugs by claim count, with $11K in brand drug costs.
Does Timothy Masterson, MD prescribe opioids? ▼
Yes, Timothy Masterson, MD had 22 opioid claims in 2023 with an opioid prescribing rate of 6.8%.
How many Urology Physician providers are there in the US? ▼
There are 13,350 Urology Physician providers across 54 states in the US. The average Urology Physician provider writes 1,280 Medicare Part D claims per year.
What drugs does Timothy Masterson, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Timothy Masterson, MD's most frequently prescribed drugs include Tamsulosin Hcl, Sulfamethoxazole-Trimethoprim, Oxybutynin Chloride. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Timothy Masterson, MD accept Medicare? ▼
Timothy Masterson, MD appears in CMS Medicare data with 324 Part D claims and 112 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Timothy Masterson, MD's credentials? ▼
Timothy Masterson, MD's NPI is 1528227923 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
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.