2026 NPPES data Internal Medicine Physician NPI 1427547470
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DYLAN ATCHLEY

Internal Medicine Physician in SCARBOROUGH, 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
3K
Medicare Part D claims · 573 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: DYLAN ATCHLEY is a Internal Medicine Physician ([object Object]) practicing in SCARBOROUGH, Maine with a Medicare Part D prescribing footprint of 3K claims across 573 beneficiaries — 15% brand-name prescribing .

What stands out: DYLAN ATCHLEY filed 3,223 Medicare Part D claims in 2023 across SCARBOROUGH, Maine. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

DYLAN ATCHLEY 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).

DYLAN ATCHLEY at a glance

Quality data not reported

NPI registry status

Active

Issued 05/04/2018

NPI 1427547470

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

3,223 19% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Maine

How Internal Medicine Physician compares to other specialties among Maine providers

Maine providers

Internal Medicine Physician share within Maine

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

Specialty board-certification context

Estimated specialty board-certified rate — Internal Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Internal Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Internal Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Internal Medicine Physician) — ABMS / AOA estimate

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).

DYLAN ATCHLEY is a Internal Medicine Physician provider practicing in SCARBOROUGH, Maine, according to the CMS National Plan and Provider Enumeration System (NPPES). NPI: 1427547470. 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.

DYLAN ATCHLEY appears in the CMS NPPES registry as a Internal Medicine Physician provider at 300 PROFESSIONAL DR, SCARBOROUGH, ME, 04074, with a listed phone of (207) 883-3491. NPI 1427547470 was issued on 05/04/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ATCHLEY 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 3,223 prescription claims written by this provider, covering 573 Medicare beneficiaries and totaling roughly $419K in drug spend, split 15% brand-name and 85% generic by claim count, with an opioid prescribing rate of 3.1%. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

300 PROFESSIONAL DR
SCARBOROUGH, ME 04074

Provider Details

NPI 1427547470
Specialty Internal Medicine Physician
Gender Male
NPI Issued 05/04/2018

Hospital and facility affiliations

Facilities where DYLAN ATCHLEY 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
PORTLAND, 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

DYLAN ATCHLEY — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 3,223 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.

3,223
Total Claims
$419K
Total Drug Cost
573
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
7,274
Total Day Supply
212,031
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$345K
Generic Drug Cost
$73K
Opioid Claims
99 (3.1% rate)
Antibiotic Claims
20

Patient Demographics

Average Patient Age
72.2 years
Avg HCC Risk Score
1.58
Gender Split
61% female / 39% male
Age Distribution
<65: 100, 65-74: 229, 75-84: 172, 85+: 72

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Atorvastatin Calcium
255
Amlodipine Besylate
184
Levothyroxine Sodium
161
Lisinopril
133
Omeprazole
108
Losartan Potassium
106
Hydrochlorothiazide
95
Sertraline Hcl
94
Metoprolol Succinate
82
Gabapentin
72

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Internal Medicine Physician Overview

How DYLAN ATCHLEY fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

DYLAN ATCHLEY's 3,223 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Maine

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

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is DYLAN ATCHLEY's specialty?
DYLAN ATCHLEY specializes in Internal Medicine Physician and practices in SCARBOROUGH, Maine.
How much does DYLAN ATCHLEY prescribe under Medicare Part D?
In 2023, DYLAN ATCHLEY wrote 3,223 Medicare Part D claims totaling $419K in drug costs for 573 beneficiaries.
Where is DYLAN ATCHLEY located?
DYLAN ATCHLEY is located at 300 PROFESSIONAL DR, SCARBOROUGH, ME, 04074. Phone: (207) 883-3491.
What is DYLAN ATCHLEY's NPI number?
DYLAN ATCHLEY's National Provider Identifier (NPI) is 1427547470, issued on 05/04/2018.
Does DYLAN ATCHLEY prescribe more brand-name or generic drugs?
DYLAN ATCHLEY's prescribing is 15% brand-name and 85% generic drugs by claim count, with $345K in brand drug costs.
Does DYLAN ATCHLEY prescribe opioids?
Yes, DYLAN ATCHLEY had 99 opioid claims in 2023 with an opioid prescribing rate of 3.1%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does DYLAN ATCHLEY prescribe most often?
Based on 2023 Medicare Part D data, DYLAN ATCHLEY's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DYLAN ATCHLEY accept Medicare?
DYLAN ATCHLEY appears in CMS Medicare data with 3,223 Part D claims and 573 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DYLAN ATCHLEY's credentials?
DYLAN ATCHLEY's NPI is 1427547470. 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.
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