2026 NPPES data Internal Medicine Physician NPI 1558092668 MD, PHD
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RYAN ASHLEY, MD, PHD

Internal Medicine Physician in BRIGHTON, Massachusetts. 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
69
Medicare Part D claims · 28 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
75%
generic claims · 25% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: RYAN ASHLEY, MD, PHD is a Internal Medicine Physician ([object Object]) practicing in BRIGHTON, Massachusetts with a Medicare Part D prescribing footprint of 69 claims across 28 beneficiaries — 25% brand-name prescribing .

What stands out: RYAN ASHLEY, MD, PHD filed 69 Medicare Part D claims in 2023 across BRIGHTON, Massachusetts. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

RYAN ASHLEY, MD, PHD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

RYAN ASHLEY, MD, PHD at a glance

Quality data not reported

NPI registry status

Active

Issued 06/20/2022

NPI 1558092668

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

69 97% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Massachusetts

How Internal Medicine Physician compares to other specialties among Massachusetts providers

Massachusetts providers

Internal Medicine Physician share within Massachusetts

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

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).

RYAN ASHLEY, MD, PHD is a Internal Medicine Physician provider practicing in BRIGHTON, Massachusetts, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD, PHD. NPI: 1558092668. 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.

RYAN ASHLEY, MD, PHD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD, PHD credentials at 736 CAMBRIDGE ST, BRIGHTON, MA, 02135, with a listed phone of (774) 292-9409. NPI 1558092668 was issued on 06/20/2022. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ASHLEY 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 69 prescription claims written by this provider, covering 28 Medicare beneficiaries and totaling roughly $31K in drug spend, split 25% brand-name and 75% generic by claim count. 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

736 CAMBRIDGE ST
BRIGHTON, MA 02135

Provider Details

NPI 1558092668
Specialty Internal Medicine Physician
Credentials MD, PHD
Gender Male
NPI Issued 06/20/2022

License & disciplinary context — Massachusetts BORIM 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~38K Massachusetts medical licensees in 2023 — they are NOT specific to RYAN ASHLEY, MD, PHD. To verify RYAN ASHLEY, MD, PHD's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases

BORIM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Above average

RYAN ASHLEY, MD, PHD — brand share 25.0%
Specialty average (est.)

25% brand-name claims vs 75% generic, on 69 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.

69
Total Claims
$31K
Total Drug Cost
28
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
89
Total Day Supply
2,349
Brand vs Generic
25% brand / 75% generic
Brand Drug Cost
$30K
Generic Drug Cost
$1K

Patient Demographics

Average Patient Age
73.0 years
Avg HCC Risk Score
2.99

Internal Medicine Physician Overview

How RYAN ASHLEY, MD, PHD 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

RYAN ASHLEY, MD, PHD's 69 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Massachusetts

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

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

Frequently Asked Questions

What is RYAN ASHLEY, MD, PHD's specialty?
RYAN ASHLEY, MD, PHD specializes in Internal Medicine Physician and practices in BRIGHTON, Massachusetts. Credentials: MD, PHD.
How much does RYAN ASHLEY, MD, PHD prescribe under Medicare Part D?
In 2023, RYAN ASHLEY, MD, PHD wrote 69 Medicare Part D claims totaling $31K in drug costs for 28 beneficiaries.
Where is RYAN ASHLEY, MD, PHD located?
RYAN ASHLEY, MD, PHD is located at 736 CAMBRIDGE ST, BRIGHTON, MA, 02135. Phone: (774) 292-9409.
What is RYAN ASHLEY, MD, PHD's NPI number?
RYAN ASHLEY, MD, PHD's National Provider Identifier (NPI) is 1558092668, issued on 06/20/2022.
Does RYAN ASHLEY, MD, PHD prescribe more brand-name or generic drugs?
RYAN ASHLEY, MD, PHD's prescribing is 25% brand-name and 75% generic drugs by claim count, with $30K in brand drug costs.
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.
Does RYAN ASHLEY, MD, PHD accept Medicare?
RYAN ASHLEY, MD, PHD appears in CMS Medicare data with 69 Part D claims and 28 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify RYAN ASHLEY, MD, PHD's credentials?
RYAN ASHLEY, MD, PHD's NPI is 1558092668 with credentials MD, PHD. 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