NPI registry status
Active
2026 NPPES data Urology Physician NPI 1578925715 MD
Verify on CMS → Nathaniel Johnson, MD
Urology Physician in Biddeford, Maine.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 13,367 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
856
Medicare Part D claims · 232 beneficiaries · Urology Physician avg: 1K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
98.1/100
▲ 15 pts above national avg 83.1 · Exceptional
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
Nathaniel Johnson, MD reported a CMS MIPS final score of 98.1/100 - above the 83.1 national average - and filed 856 Medicare Part D claims in 2023.
- 98.1/100
- MIPS score · +15 vs avg
- 856
- Part D claims, 2023
- 90%
- 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.
Nathaniel Johnson, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
98 Top 11% higher than 89% of 477,587 scored providers
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
Where Nathaniel Johnson, MD sits
This provider among urology physician peers
Across the 4,623 urology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Nathaniel Johnson, MD writes more Part D claims than 33% of them and scores higher on MIPS quality than 83% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one urology physician peer from a representative sample of 60; the gold marker is Nathaniel Johnson, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Nathaniel Johnson, 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 Nathaniel Johnson, MD?
High performer (top quartile)Primary specialty
Urology Physician
Medicare Part D claims
856 33% vs specialty avg
MIPS final score
98.1/100 15 pts vs avg
Specialty distribution in Maine
How Urology Physician compares to other specialties among Maine providers
Medicare quality performance, MIPS
Nathaniel Johnson, MD's 2023 MIPS final score plotted against the Urology Physician national average
- MIPS Final Score
- 98.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Urology Physician) - 98.1/100 vs national avg 83.1
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).
Nathaniel Johnson, MD appears in the CMS NPPES registry as a Urology Physician provider holding MD credentials at 20 W COLE RD STE 101, Biddeford, ME, 04005, with a listed phone of (207) 283-1602. NPI 1578925715 was issued on 03/27/2016.
Medicare Part D records for calendar year 2023 show 856 prescription claims written by this provider, covering 232 Medicare beneficiaries and totaling roughly $85K in drug spend, split 10% brand-name and 90% generic by claim count, with an opioid prescribing rate of 5.8%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 98.1/100 for the 2023 performance year (Quality 86.1), compared with the national average of 83.1.
Urology Physician is a mid-sized specialty nationwide, with 13,367 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 | 1578925715 |
|---|---|
| Specialty | Urology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 03/27/2016 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
98.0699
Final Score
Avg: 83.1
86.1398
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Nathaniel Johnson, 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.
Mainehealth
Biddeford, ME
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
Nathaniel Johnson, MD - brand share 10.0%
Urology Physician average
10% brand-name claims vs 90% generic, on 856 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.
856
Total Claims
$85K
Total Drug Cost
232
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,502
- Total Day Supply
- 38,405
- Brand vs Generic
- 10% brand / 90% generic
- Brand Drug Cost
- $58K
- Generic Drug Cost
- $27K
- Opioid Claims
- 50 (5.8% rate)
- Antibiotic Claims
- 143
Patient Demographics
- Average Patient Age
- 74.5 years
- Avg HCC Risk Score
- 1.32
- Gender Split
- 26% female / 74% male
- Age Distribution
- <65: 21, 65-74: 97, 75-84: 82, 85+: 32
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Nathaniel Johnson, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Finasteride
Finasteride
192 claims
- Tamsulosin Hcl
Tamsulosin Hcl
135 claims
- Solifenacin Succin… 56
Solifenacin Succinate
56 claims
- Myrbetriq 55
Myrbetriq
55 claims
- Cephalexin 53
Cephalexin
53 claims
- Oxybutynin Chloride 53
Oxybutynin Chloride
53 claims
- Sulfamethoxazole-T… 34
Sulfamethoxazole-Trimethoprim
34 claims
- Diclofenac Sodium 29
Diclofenac Sodium
29 claims
| Drug | Claims |
|---|---|
| Finasteride | 192 |
| Tamsulosin Hcl | 135 |
| Solifenacin Succinate | 56 |
| Myrbetriq Mirabegron | 55 |
| Cephalexin | 53 |
| Oxybutynin Chloride | 53 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 34 |
| Diclofenac Sodium | 29 |
| Tramadol Hcl | 26 |
| Oxycodone Hcl | 23 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Urology Physician Overview
How Nathaniel Johnson, MD fits within the Urology Physician landscape nationally.
13,367
Urology Physician Providers in US
54
States with Urology Physician
1,280
Avg Claims per Provider
Nathaniel Johnson, MD's 856 claims are below the specialty average of 1,280.
Nearby Urology Physician Providers in Maine
Other clinicians with the same primary specialty enrolled in Maine, drawn from the same CMS NPPES roster as Johnson.
Dr. Ahmad Abed Elnoor
M.D.
Dover Foxcroft, ME
Dr. Gregory Adey
M.D.
Portland, ME
Dr. Elizabeth Albertson
MD
Rockport, ME
Dr. Griffith Batstone
M.D.
Farmington, ME
Dr. Lisa Beaule
MD
South Portland, ME
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 Maine 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
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
Virtual care options and coverage in 2026
Explore Maine
Frequently Asked Questions
What is Nathaniel Johnson, MD's specialty? ▼
Nathaniel Johnson, MD specializes in Urology Physician and practices in Biddeford, Maine. Credentials: MD.
How much does Nathaniel Johnson, MD prescribe under Medicare Part D? ▼
In 2023, Nathaniel Johnson, MD wrote 856 Medicare Part D claims totaling $85K in drug costs for 232 beneficiaries.
What is Nathaniel Johnson, MD's Medicare quality score? ▼
Nathaniel Johnson, MD has a CMS MIPS Final Score of 98.1/100 (Quality: 86.1). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Nathaniel Johnson, MD located? ▼
Nathaniel Johnson, MD is located at 20 W COLE RD STE 101, Biddeford, ME, 04005. Phone: (207) 283-1602.
What is Nathaniel Johnson, MD's NPI number? ▼
Nathaniel Johnson, MD's National Provider Identifier (NPI) is 1578925715, issued on 03/27/2016.
Does Nathaniel Johnson, MD prescribe more brand-name or generic drugs? ▼
Nathaniel Johnson, MD's prescribing is 10% brand-name and 90% generic drugs by claim count, with $58K in brand drug costs.
Does Nathaniel Johnson, MD prescribe opioids? ▼
Yes, Nathaniel Johnson, MD had 50 opioid claims in 2023 with an opioid prescribing rate of 5.8%.
How many Urology Physician providers are there in the US? ▼
There are 13,367 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 Nathaniel Johnson, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Nathaniel Johnson, MD's most frequently prescribed drugs include Finasteride, Tamsulosin Hcl, Solifenacin Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Nathaniel Johnson, MD accept Medicare? ▼
Nathaniel Johnson, MD appears in CMS Medicare data with 856 Part D claims and 232 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Nathaniel Johnson, MD's credentials? ▼
Nathaniel Johnson, MD's NPI is 1578925715 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.
- 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
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.