2026 NPPES data Anatomic Pathology & Clinical Pathology Physician NPI 1952395428 M.D.
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MICHAEL ENG, M.D.

Anatomic Pathology & Clinical Pathology Physician in LEWISTON, 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
990
Medicare Part D claims · 132 beneficiaries · Anatomic Pathology & Clinical Pathology Physician avg: 284
Generic prescribing
74%
generic claims · 26% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$106.84
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

MICHAEL ENG, M.D. filed 990 Medicare Part D claims in 2023 as a Anatomic Pathology & Clinical Pathology Physician in LEWISTON, Maine, prescribing 74% generic.

990
Part D claims, 2023
74%
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.

MICHAEL ENG, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

990 Top 25% higher than 75% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). This entry sits in this band. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

MICHAEL ENG, M.D. 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).

What does the federal data show about MICHAEL ENG, M.D.?

Quality data not reported

NPI registry status

Active

Issued 09/09/2005

NPI 1952395428

Primary specialty

Anatomic Pathology & Clinical Pathology Physician

Mid-sized

13,692 US NPIs in this specialty

Medicare Part D claims

990 249% vs specialty avg

2023 prescription claims

Specialty avg: 284

Specialty distribution in Maine

How Anatomic Pathology & Clinical Pathology Physician compares to other specialties among Maine providers

Maine providers

Anatomic Pathology & Clinical Pathology Physician share within Maine

1. Anatomic Pathology & Clinical Pathology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Anatomic Pathology & Clinical Pathology Physician share within Maine

Specialty board-certification context

Estimated specialty board-certified rate — Anatomic Pathology & Clinical Pathology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Anatomic Pathology & Clinical Pathology Physician ABMS/AOA estimate

Est. board-certified rate (Anatomic Pathology & Clinical Pathology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Anatomic Pathology & Clinical Pathology 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).

MICHAEL ENG, M.D. appears in the CMS NPPES registry as a Anatomic Pathology & Clinical Pathology Physician provider holding M.D. credentials at 300 MAIN ST, LEWISTON, ME, 04240, with a listed phone of (207) 795-2338. NPI 1952395428 was issued on 09/09/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ENG 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 990 prescription claims written by this provider, covering 132 Medicare beneficiaries and totaling roughly $130K in drug spend, split 26% brand-name and 74% 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.

Anatomic Pathology & Clinical Pathology Physician is a mid-sized specialty nationwide, with 13,692 enrolled providers across 55 states and an average of 284 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 MAIN ST
LEWISTON, ME 04240

Provider Details

NPI 1952395428
Specialty Anatomic Pathology & Clinical Pathology Physician
Credentials M.D.
Gender Male
NPI Issued 09/09/2005

Hospital and facility affiliations

Facilities where MICHAEL ENG, 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.

RECOVER TOGETHER INC
KEENE, NH

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for MICHAEL ENG, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$107

Largest payer

ATRICURE, INC.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Above average

MICHAEL ENG, M.D. — brand share 26.0%
Specialty average (est.)

26% brand-name claims vs 74% generic, on 990 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.

990
Total Claims
$130K
Total Drug Cost
132
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,007
Total Day Supply
14,727
Brand vs Generic
26% brand / 74% generic
Brand Drug Cost
$84K
Generic Drug Cost
$46K

Patient Demographics

Average Patient Age
49.5 years
Avg HCC Risk Score
1.24
Gender Split
51% female / 49% male
Age Distribution
<65: 118, 65-74: 13, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What MICHAEL ENG, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Buprenorphine-Naloxone
Buprenorphine Hcl/Naloxone Hcl
535
Suboxone
Buprenorphine Hcl/Naloxone Hcl
197
Zubsolv
Buprenorphine Hcl/Naloxone Hcl
53
Buprenorphine Hcl
41
Duloxetine Hcl
25
Lithium Carbonate Er
Lithium Carbonate
14
Gabapentin
13
Dextroamphetamine-Amphetamine
Dextroamphetamine/Amphetamine
12

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

Anatomic Pathology & Clinical Pathology Physician Overview

How MICHAEL ENG, M.D. fits within the Anatomic Pathology & Clinical Pathology Physician landscape nationally.

13,692
Anatomic Pathology & Clinical Pathology Physician Providers in US
55
States with Anatomic Pathology & Clinical Pathology Physician
284
Avg Claims per Provider

MICHAEL ENG, M.D.'s 990 claims are above the specialty average of 284.

Nearby Anatomic Pathology & Clinical Pathology Physician Providers in Maine

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

Compare Anatomic Pathology & Clinical Pathology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MICHAEL ENG, M.D.'s specialty?
MICHAEL ENG, M.D. specializes in Anatomic Pathology & Clinical Pathology Physician and practices in LEWISTON, Maine. Credentials: M.D..
How much does MICHAEL ENG, M.D. prescribe under Medicare Part D?
In 2023, MICHAEL ENG, M.D. wrote 990 Medicare Part D claims totaling $130K in drug costs for 132 beneficiaries.
Where is MICHAEL ENG, M.D. located?
MICHAEL ENG, M.D. is located at 300 MAIN ST, LEWISTON, ME, 04240. Phone: (207) 795-2338.
What is MICHAEL ENG, M.D.'s NPI number?
MICHAEL ENG, M.D.'s National Provider Identifier (NPI) is 1952395428, issued on 09/09/2005.
Does MICHAEL ENG, M.D. prescribe more brand-name or generic drugs?
MICHAEL ENG, M.D.'s prescribing is 26% brand-name and 74% generic drugs by claim count, with $84K in brand drug costs.
How many Anatomic Pathology & Clinical Pathology Physician providers are there in the US?
There are 13,692 Anatomic Pathology & Clinical Pathology Physician providers across 55 states in the US. The average Anatomic Pathology & Clinical Pathology Physician provider writes 284 Medicare Part D claims per year.
What drugs does MICHAEL ENG, M.D. prescribe most often?
Based on 2023 Medicare Part D data, MICHAEL ENG, M.D.'s most frequently prescribed drugs include Buprenorphine-Naloxone, Suboxone, Zubsolv. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MICHAEL ENG, M.D. accept Medicare?
MICHAEL ENG, M.D. appears in CMS Medicare data with 990 Part D claims and 132 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MICHAEL ENG, M.D.'s credentials?
MICHAEL ENG, M.D.'s NPI is 1952395428 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

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