2026 NPPES data Emergency Medicine Physician NPI 1366499592 M.D.
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REBECCA BLOCH, M.D.

Emergency 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
101
Medicare Part D claims · 77 beneficiaries · Emergency Medicine Physician avg: 352
MIPS score
98.0699/100
▲ 15 pts above national avg 83.1 · [object Object]
What the federal data reveals: REBECCA BLOCH, M.D. is a Emergency Medicine Physician ([object Object]) practicing in PORTLAND, Maine with a Medicare Part D prescribing footprint of 101 claims across 77 beneficiaries . Their CMS MIPS Final Score of 98.0699/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: REBECCA BLOCH, M.D. reported a CMS MIPS final score of 98.0699 out of 100, above the 83.1 national average, and filed 101 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

REBECCA BLOCH, 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).

REBECCA BLOCH, M.D. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 05/31/2006

NPI 1366499592

Primary specialty

Emergency Medicine Physician

High-volume

64,398 US NPIs in this specialty

Medicare Part D claims

101 71% vs specialty avg

2023 prescription claims

Specialty avg: 352

MIPS final score

98.0699/100 14.96990000000001% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Maine

How Emergency Medicine Physician compares to other specialties among Maine providers

Maine providers

Emergency Medicine Physician share within Maine

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

Medicare quality performance — MIPS

REBECCA BLOCH, M.D.'s 2023 MIPS final score plotted against the Emergency Medicine Physician national average

High performer (top quartile)
MIPS Final Score
98.0699/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Emergency Medicine Physician) — 98.0699/100 vs national avg 83.1

0%100%National avg83%98.1%
MIPS final score (Emergency Medicine Physician) — 98.0699/100 vs national avg 83.1

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).

REBECCA BLOCH, M.D. is a Emergency Medicine Physician provider practicing in PORTLAND, Maine, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1366499592. 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.

REBECCA BLOCH, M.D. appears in the CMS NPPES registry as a Emergency Medicine Physician provider holding M.D. credentials at 144 STATE ST, PORTLAND, ME, 04101, with a listed phone of (207) 879-3000. NPI 1366499592 was issued on 05/31/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BLOCH 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 101 prescription claims written by this provider, covering 77 Medicare beneficiaries and totaling roughly $4K in drug spend. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 98.0699/100 for the 2023 performance year (Quality 86.1398), compared with the national average of 83.1.

Emergency Medicine Physician is a high-volume specialty nationwide, with 64,398 enrolled providers across 56 states and an average of 352 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

144 STATE ST
PORTLAND, ME 04101

Provider Details

NPI 1366499592
Specialty Emergency Medicine Physician
Credentials M.D.
Gender Female
NPI Issued 05/31/2006

CMS Quality Score (MIPS)

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

98.0699
Final Score
Avg: 83.1
86.1398
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where REBECCA BLOCH, 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
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).

Medicare Part D Prescribing Data

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

101
Total Claims
$4K
Total Drug Cost
77
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
103
Total Day Supply
1,248
Generic Drug Cost
$1K
Antibiotic Claims
49

Patient Demographics

Average Patient Age
70.7 years
Avg HCC Risk Score
1.33
Gender Split
58% female / 42% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Doxycycline Hyclate
21

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

Emergency Medicine Physician Overview

How REBECCA BLOCH, M.D. fits within the Emergency Medicine Physician landscape nationally.

64,398
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider

REBECCA BLOCH, M.D.'s 101 claims are below the specialty average of 352.

Nearby Emergency Medicine Physician Providers in Maine

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

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

Frequently Asked Questions

What is REBECCA BLOCH, M.D.'s specialty?
REBECCA BLOCH, M.D. specializes in Emergency Medicine Physician and practices in PORTLAND, Maine. Credentials: M.D..
How much does REBECCA BLOCH, M.D. prescribe under Medicare Part D?
In 2023, REBECCA BLOCH, M.D. wrote 101 Medicare Part D claims totaling $4K in drug costs for 77 beneficiaries.
What is REBECCA BLOCH, M.D.'s Medicare quality score?
REBECCA BLOCH, M.D. has a CMS MIPS Final Score of 98.0699/100 (Quality: 86.1398). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is REBECCA BLOCH, M.D. located?
REBECCA BLOCH, M.D. is located at 144 STATE ST, PORTLAND, ME, 04101. Phone: (207) 879-3000.
What is REBECCA BLOCH, M.D.'s NPI number?
REBECCA BLOCH, M.D.'s National Provider Identifier (NPI) is 1366499592, issued on 05/31/2006.
How many Emergency Medicine Physician providers are there in the US?
There are 64,398 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
What drugs does REBECCA BLOCH, M.D. prescribe most often?
Based on 2023 Medicare Part D data, REBECCA BLOCH, M.D.'s most frequently prescribed drugs include Doxycycline Hyclate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does REBECCA BLOCH, M.D. accept Medicare?
REBECCA BLOCH, M.D. appears in CMS Medicare data with 101 Part D claims and 77 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify REBECCA BLOCH, M.D.'s credentials?
REBECCA BLOCH, M.D.'s NPI is 1366499592 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.
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