2026 NPPES data Urology Physician NPI 1578925715 MD
Verify on CMS →

NATHANIEL JOHNSON, MD

Urology Physician in BIDDEFORD, Maine. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
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
98.0699/100
▲ 15 pts above national avg 83.1 · [object Object]
What the federal data reveals: NATHANIEL JOHNSON, MD is a Urology Physician ([object Object]) practicing in BIDDEFORD, Maine with a Medicare Part D prescribing footprint of 856 claims across 232 beneficiaries — 10% brand-name prescribing . Their CMS MIPS Final Score of 98.0699/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: NATHANIEL JOHNSON, MD reported a CMS MIPS final score of 98.0699 out of 100, above the 83.1 national average, and filed 856 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

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).

NATHANIEL JOHNSON, MD at a glance

High performer (top quartile)

NPI registry status

Active

Issued 03/27/2016

NPI 1578925715

Primary specialty

Urology Physician

Mid-sized

13,350 US NPIs in this specialty

Medicare Part D claims

856 33% vs specialty avg

2023 prescription claims

Specialty avg: 1,280

MIPS final score

98.0699/100 14.96990000000001% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Maine

How Urology Physician compares to other specialties among Maine providers

Maine providers

Urology Physician share within Maine

1. Urology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Urology Physician share within Maine

Medicare quality performance — MIPS

NATHANIEL JOHNSON, MD's 2023 MIPS final score plotted against the Urology Physician national average

High performer (top quartile)
MIPS Final Score
98.0699/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Urology Physician) — 98.0699/100 vs national avg 83.1

0%100%National avg83%98.1%
MIPS final score (Urology Physician) — 98.0699/100 vs national avg 83.1

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 is a Urology Physician provider practicing in BIDDEFORD, Maine, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1578925715. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

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. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what JOHNSON 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 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%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 98.0699/100 for the 2023 performance year (Quality 86.1398), compared with the national average of 83.1.

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

20 W COLE RD STE 101
BIDDEFORD, ME 04005

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%
Specialty average (est.)

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.

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.

13,350
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.

Compare Urology Physician nationally: see state-by-state distribution →

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 98.0699/100 (Quality: 86.1398). 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 13,350 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 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

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