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2026 NPPES data Pediatric Urology Physician NPI 1669665196 M.D.
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David Chalmers, M.D.

Pediatric Urology Physician in South Portland, 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 349 in Pediatric 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
17
Medicare Part D claims · Pediatric Urology Physician avg: 654
MIPS score
98.1/100
▲ 15 pts above national avg 83.5 · Exceptional
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Compiled from official public sources by the editorial process.

What the federal data shows

David Chalmers, M.D. reported a CMS MIPS final score of 98.1/100 - above the 83.5 national average - and filed 17 Medicare Part D claims in 2023.

98.1/100
MIPS score · +15 vs avg
17
Part D claims, 2023
Likely
board-certified (heuristic)
≥89th
pct among measured MIPS (lower-bound band)

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.

CMS NPPES provider registry desk

NPI 1669665196 · Pediatric Urology Physician

NPI-10 · ENUM-MID · TAX-TRACE · MIPS-ELITE · RX-TRACE · BOOK-THIN · PHOTO-FINISH

  • NPI-10 1669665196
  • ENUM-MID 2007
  • TAX-TRACE 349
  • MIPS-ELITE 98.1/100
  • RX-TRACE 17
  • BOOK-THIN 2 in Maine
  • PHOTO-FINISH Casey Seideman · ±0.3

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

David Chalmers, M.D.'s MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

98 ≥ 89th percentile 89% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). Below this entry. 80–90: 129,887 measured providers (29%). Below this entry. 90+: 189,403 measured providers (42%). This entry sits in this band. This provider 0 100 every measured MIPS clinician, bucketed by value

Each bar is a band; taller bars hold more measured 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.

The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where David Chalmers, M.D. sits

This provider among pediatric urology physician peers

Across the 21 pediatric urology physician providers who report both Medicare Part D prescribing and a MIPS quality score, David Chalmers, M.D. writes more Part D claims than 10% of them and scores higher on MIPS quality than 71% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100022.344.666.989.3Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 35David Chalmers, M.D., Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 71
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one pediatric urology physician peer from a representative sample of 20; the gold marker is David Chalmers, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

David Chalmers, M.D. 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 David Chalmers, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 08/17/2007

NPI 1669665196

Primary specialty

Pediatric Urology Physician

Rare

349 US NPIs in this specialty

Medicare Part D claims

17 97% vs specialty avg

2023 prescription claims

Specialty avg: 654

MIPS final score

98.1/100 14.6 pts vs avg

Exceptional band

vs 83.5 national avg

Specialty distribution in Maine

How Pediatric Urology Physician compares to other specialties among Maine providers

Maine providers
Clinical Social Worker10.2%Physical Therapist5%Pharmacist4.1%Occupational Therapist3.8%Family Medicine Physician3.5%Speech-Language Pathologist3.5%Pediatric Urology Physician0%
Largest specialties in Maine (% of in-state providers)

Medicare quality performance, MIPS

David Chalmers, M.D.'s 2023 MIPS final score plotted against the Pediatric Urology Physician national average

High performer (top quartile)
MIPS Final Score
98.1/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%98.1%
MIPS final score (Pediatric Urology Physician) - 98.1/100 vs national avg 83.5
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).

Practice Address

100 BRICKHILL AVE
South Portland, ME 04106
(207) 773-1728

Provider Details

NPI 1669665196
Specialty Pediatric Urology Physician
Credentials M.D.
Gender Male
NPI Issued 08/17/2007

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

98.0699
Final Score
Measured-score avg: 83.5
86.1398
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where David Chalmers, M.D. 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).

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

17
Total Claims
$268
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
19
Total Day Supply
372
Generic Drug Cost
$200
Antibiotic Claims
12

Patient Demographics

Average Patient Age
55.2 years
Avg HCC Risk Score
2.01
More Pediatric Urology Physician in ME → All providers in Maine → Compare specialties →

Pediatric Urology Physician Overview

How David Chalmers, M.D. fits within the Pediatric Urology Physician landscape nationally.

349
Pediatric Urology Physician Providers in US
44
States with Pediatric Urology Physician
654
Avg Claims per Provider

David Chalmers, M.D.'s 17 claims are below the specialty average of 654.

Nationwide Pediatric Urology Physician peers with similar MIPS or enrollment year

Two federal-record peer sets for Chalmers, both outside Maine so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (98.1 here).

Casey Seideman 97.8 OR Mohan Gundeti 97.7 IL Rachel Davis 98.5 NY Brian Caldwell 97.6 CO

Same NPPES enumeration year (2007)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Amanda North Baltimore, MD Francis Nwafor Waxahachie, TX Jeremy Kaufman Trumbull, CT Duong Tu Houston, TX

Nearby Pediatric Urology Physician Providers in Maine

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

Dr. Lily Wang
M.D., PHD
South Portland, ME

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

Frequently Asked Questions

What is David Chalmers, M.D.'s specialty? ▼
David Chalmers, M.D. specializes in Pediatric Urology Physician and practices in South Portland, Maine. Credentials: M.D..
How much does David Chalmers, M.D. prescribe under Medicare Part D? ▼
In 2023, David Chalmers, M.D. wrote 17 Medicare Part D claims totaling $268 in drug costs for N/A beneficiaries.
What is David Chalmers, M.D.'s Medicare quality score? ▼
David Chalmers, M.D. has a CMS MIPS Final Score of 98.1/100 (Quality: 86.1). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is David Chalmers, M.D. located? ▼
David Chalmers, M.D. is located at 100 BRICKHILL AVE, South Portland, ME, 04106. Phone: (207) 773-1728.
What is David Chalmers, M.D.'s NPI number? ▼
David Chalmers, M.D.'s National Provider Identifier (NPI) is 1669665196, issued on 08/17/2007.
How many Pediatric Urology Physician providers are there in the US? ▼
There are 349 Pediatric Urology Physician providers across 44 states in the US. The average Pediatric Urology Physician provider writes 654 Medicare Part D claims per year.
Does David Chalmers, M.D. accept Medicare? ▼
David Chalmers, M.D. appears in CMS Medicare data with 17 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify David Chalmers, M.D.'s credentials? ▼
David Chalmers, M.D.'s NPI is 1669665196 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.
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 editorial process.

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.