2026 NPPES data Emergency Medicine Physician NPI 1366630485 MD
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ROBERT HULEFELD, MD

Emergency Medicine 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
392
Medicare Part D claims · 286 beneficiaries · Emergency Medicine Physician avg: 352
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ROBERT HULEFELD, MD filed 392 Medicare Part D claims in 2023 as a Emergency Medicine Physician in LEWISTON, Maine, prescribing 88% generic.

392
Part D claims, 2023
88%
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.

ROBERT HULEFELD, MD's Medicare Part D volume vs every U.S. prescriber

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

392 Top 43% higher than 57% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 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)

ROBERT HULEFELD, 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).

What does the federal data show about ROBERT HULEFELD, MD?

Quality data not reported

NPI registry status

Active

Issued 10/15/2007

NPI 1366630485

Primary specialty

Emergency Medicine Physician

High-volume

64,398 US NPIs in this specialty

Medicare Part D claims

392 11% vs specialty avg

2023 prescription claims

Specialty avg: 352

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Emergency 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).

ROBERT HULEFELD, MD appears in the CMS NPPES registry as a Emergency Medicine Physician provider holding MD credentials at 300 MAIN ST, LEWISTON, ME, 04240, with a listed phone of (207) 795-0111. NPI 1366630485 was issued on 10/15/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HULEFELD 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 392 prescription claims written by this provider, covering 286 Medicare beneficiaries and totaling roughly $6K in drug spend, split 12% brand-name and 88% 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.

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

300 MAIN ST
LEWISTON, ME 04240

Provider Details

NPI 1366630485
Specialty Emergency Medicine Physician
Credentials MD
Gender Male
NPI Issued 10/15/2007

Hospital and facility affiliations

Facilities where ROBERT HULEFELD, 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.

MASS GENERAL BRIGHAM COMMUNITY PHYSICIANS INC
LAWRENCE, MA
MASS GENERAL BRIGHAM MEDICAL GROUP NORTHERN MASSACHUSETTS INC
DANVERS, MA

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

ROBERT HULEFELD, MD — brand share 12.0%
Specialty average (est.)

12% brand-name claims vs 88% generic, on 392 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.

392
Total Claims
$6K
Total Drug Cost
286
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
404
Total Day Supply
4,343
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$2K
Generic Drug Cost
$3K
Antibiotic Claims
175

Patient Demographics

Average Patient Age
71.8 years
Avg HCC Risk Score
1.16
Gender Split
68% female / 32% male
Age Distribution
<65: 45, 65-74: 117, 75-84: 96, 85+: 28

Top Prescribed Drugs (Medicare Part D)

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

What ROBERT HULEFELD, MD 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
Prednisone
76
Doxycycline Monohydrate
69
Cephalexin
46
Albuterol Sulfate Hfa
Albuterol Sulfate
31
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
28
Fluticasone Propionate
14
Nitrofurantoin Mono-Macro
Nitrofurantoin Monohyd/M-Cryst
12
Paxlovid (Eua)
Nirmatrelvir/Ritonavir
11

* 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 ROBERT HULEFELD, MD 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

ROBERT HULEFELD, MD's 392 claims are above 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 HULEFELD.

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

Frequently Asked Questions

What is ROBERT HULEFELD, MD's specialty?
ROBERT HULEFELD, MD specializes in Emergency Medicine Physician and practices in LEWISTON, Maine. Credentials: MD.
How much does ROBERT HULEFELD, MD prescribe under Medicare Part D?
In 2023, ROBERT HULEFELD, MD wrote 392 Medicare Part D claims totaling $6K in drug costs for 286 beneficiaries.
Where is ROBERT HULEFELD, MD located?
ROBERT HULEFELD, MD is located at 300 MAIN ST, LEWISTON, ME, 04240. Phone: (207) 795-0111.
What is ROBERT HULEFELD, MD's NPI number?
ROBERT HULEFELD, MD's National Provider Identifier (NPI) is 1366630485, issued on 10/15/2007.
Does ROBERT HULEFELD, MD prescribe more brand-name or generic drugs?
ROBERT HULEFELD, MD's prescribing is 12% brand-name and 88% generic drugs by claim count, with $2K in brand drug costs.
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 ROBERT HULEFELD, MD prescribe most often?
Based on 2023 Medicare Part D data, ROBERT HULEFELD, MD's most frequently prescribed drugs include Prednisone, Doxycycline Monohydrate, Cephalexin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ROBERT HULEFELD, MD accept Medicare?
ROBERT HULEFELD, MD appears in CMS Medicare data with 392 Part D claims and 286 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ROBERT HULEFELD, MD's credentials?
ROBERT HULEFELD, MD's NPI is 1366630485 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