2026 NPPES data Internal Medicine Physician NPI 1649239765 MD
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PETER EMERY, MD

Internal Medicine Physician in PORTLAND, 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
8K
Medicare Part D claims · 724 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: PETER EMERY, MD is a Internal Medicine Physician ([object Object]) practicing in PORTLAND, Maine with a Medicare Part D prescribing footprint of 8K claims across 724 beneficiaries — 13% brand-name prescribing .

What stands out: PETER EMERY, MD filed 8,267 Medicare Part D claims in 2023 across PORTLAND, Maine. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

PETER EMERY, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

PETER EMERY, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 03/18/2006

NPI 1649239765

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

8,267 204% 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).

PETER EMERY, MD is a Internal Medicine Physician provider practicing in PORTLAND, Maine, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1649239765. 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.

PETER EMERY, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 84 MARGINAL WAY, PORTLAND, ME, 04101, with a listed phone of (207) 774-5816. NPI 1649239765 was issued on 03/18/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what EMERY 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 8,267 prescription claims written by this provider, covering 724 Medicare beneficiaries and totaling roughly $970K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 0.8%. 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.

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

84 MARGINAL WAY
PORTLAND, ME 04101

Provider Details

NPI 1649239765
Specialty Internal Medicine Physician
Credentials MD
Gender Male
NPI Issued 03/18/2006

Hospital and facility affiliations

Facilities where PETER EMERY, 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.

INTERMED PA
SOUTH PORTLAND, ME
SELECT PHYSICAL THERAPY HOLDINGS INC
AUBURN, 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

PETER EMERY, MD — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 8,267 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.

8,267
Total Claims
$970K
Total Drug Cost
724
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
21,246
Total Day Supply
620,535
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$813K
Generic Drug Cost
$152K
Opioid Claims
70 (0.8% rate)
Antibiotic Claims
218

Patient Demographics

Average Patient Age
75.1 years
Avg HCC Risk Score
1.02
Gender Split
43% female / 57% male
Age Distribution
<65: 24, 65-74: 335, 75-84: 270, 85+: 95

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
699
Losartan Potassium
543
Levothyroxine Sodium
416
Amlodipine Besylate
405
Lisinopril
345
Simvastatin
300
Omeprazole
273
Hydrochlorothiazide
263
Eliquis
Apixaban
237
Metoprolol Succinate
192

* 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 PETER EMERY, MD 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

PETER EMERY, MD's 8,267 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 EMERY.

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

Frequently Asked Questions

What is PETER EMERY, MD's specialty?
PETER EMERY, MD specializes in Internal Medicine Physician and practices in PORTLAND, Maine. Credentials: MD.
How much does PETER EMERY, MD prescribe under Medicare Part D?
In 2023, PETER EMERY, MD wrote 8,267 Medicare Part D claims totaling $970K in drug costs for 724 beneficiaries.
Where is PETER EMERY, MD located?
PETER EMERY, MD is located at 84 MARGINAL WAY, PORTLAND, ME, 04101. Phone: (207) 774-5816.
What is PETER EMERY, MD's NPI number?
PETER EMERY, MD's National Provider Identifier (NPI) is 1649239765, issued on 03/18/2006.
Does PETER EMERY, MD prescribe more brand-name or generic drugs?
PETER EMERY, MD's prescribing is 13% brand-name and 87% generic drugs by claim count, with $813K in brand drug costs.
Does PETER EMERY, MD prescribe opioids?
Yes, PETER EMERY, MD had 70 opioid claims in 2023 with an opioid prescribing rate of 0.8%.
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 PETER EMERY, MD prescribe most often?
Based on 2023 Medicare Part D data, PETER EMERY, MD's most frequently prescribed drugs include Atorvastatin Calcium, Losartan Potassium, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does PETER EMERY, MD accept Medicare?
PETER EMERY, MD appears in CMS Medicare data with 8,267 Part D claims and 724 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify PETER EMERY, MD's credentials?
PETER EMERY, MD's NPI is 1649239765 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.
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