2026 NPPES data Obstetrics & Gynecology Physician NPI 1992125785 MD
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ELISABETH DEERAN, MD

Obstetrics & Gynecology 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
108
Medicare Part D claims · 31 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: ELISABETH DEERAN, MD is a Obstetrics & Gynecology Physician ([object Object]) practicing in PORTLAND, Maine with a Medicare Part D prescribing footprint of 108 claims across 31 beneficiaries — 12% brand-name prescribing .

What stands out: ELISABETH DEERAN, MD filed 108 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)

ELISABETH DEERAN, MD 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).

ELISABETH DEERAN, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 04/21/2014

NPI 1992125785

Primary specialty

Obstetrics & Gynecology Physician

Mid-sized

44,313 US NPIs in this specialty

Medicare Part D claims

108 40% vs specialty avg

2023 prescription claims

Specialty avg: 179

Specialty distribution in Maine

How Obstetrics & Gynecology Physician compares to other specialties among Maine providers

Maine providers

Obstetrics & Gynecology Physician share within Maine

1. Obstetrics & Gynecology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Obstetrics & Gynecology Physician share within Maine

Specialty board-certification context

Estimated specialty board-certified rate — Obstetrics & Gynecology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Obstetrics & Gynecology Physician ABMS/AOA estimate

Est. board-certified rate (Obstetrics & Gynecology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Obstetrics & Gynecology 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).

ELISABETH DEERAN, MD is a Obstetrics & Gynecology Physician provider practicing in PORTLAND, Maine, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1992125785. 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.

ELISABETH DEERAN, MD appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding MD credentials at 84 MARGINAL WAY, PORTLAND, ME, 04101, with a listed phone of (207) 874-2445. NPI 1992125785 was issued on 04/21/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DEERAN 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 108 prescription claims written by this provider, covering 31 Medicare beneficiaries and totaling roughly $13K 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.

Obstetrics & Gynecology Physician is a mid-sized specialty nationwide, with 44,313 enrolled providers across 56 states and an average of 179 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 1992125785
Specialty Obstetrics & Gynecology Physician
Credentials MD
Gender Female
NPI Issued 04/21/2014

Hospital and facility affiliations

Facilities where ELISABETH DEERAN, 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
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).

Brand vs generic prescribing mix · Typical

ELISABETH DEERAN, MD — brand share 12.0%
Specialty average (est.)

12% brand-name claims vs 88% generic, on 108 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.

108
Total Claims
$13K
Total Drug Cost
31
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
280
Total Day Supply
8,205
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$4K
Generic Drug Cost
$9K

Patient Demographics

Average Patient Age
70.1 years
Avg HCC Risk Score
0.69
Gender Split
100% female / 0% 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
Estradiol
34
Clobetasol Propionate
15

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

Obstetrics & Gynecology Physician Overview

How ELISABETH DEERAN, MD fits within the Obstetrics & Gynecology Physician landscape nationally.

44,313
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider

ELISABETH DEERAN, MD's 108 claims are below the specialty average of 179.

Nearby Obstetrics & Gynecology Physician Providers in Maine

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

Compare Obstetrics & Gynecology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ELISABETH DEERAN, MD's specialty?
ELISABETH DEERAN, MD specializes in Obstetrics & Gynecology Physician and practices in PORTLAND, Maine. Credentials: MD.
How much does ELISABETH DEERAN, MD prescribe under Medicare Part D?
In 2023, ELISABETH DEERAN, MD wrote 108 Medicare Part D claims totaling $13K in drug costs for 31 beneficiaries.
Where is ELISABETH DEERAN, MD located?
ELISABETH DEERAN, MD is located at 84 MARGINAL WAY, PORTLAND, ME, 04101. Phone: (207) 874-2445.
What is ELISABETH DEERAN, MD's NPI number?
ELISABETH DEERAN, MD's National Provider Identifier (NPI) is 1992125785, issued on 04/21/2014.
Does ELISABETH DEERAN, MD prescribe more brand-name or generic drugs?
ELISABETH DEERAN, MD's prescribing is 12% brand-name and 88% generic drugs by claim count, with $4K in brand drug costs.
How many Obstetrics & Gynecology Physician providers are there in the US?
There are 44,313 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
What drugs does ELISABETH DEERAN, MD prescribe most often?
Based on 2023 Medicare Part D data, ELISABETH DEERAN, MD's most frequently prescribed drugs include Estradiol, Clobetasol Propionate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ELISABETH DEERAN, MD accept Medicare?
ELISABETH DEERAN, MD appears in CMS Medicare data with 108 Part D claims and 31 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ELISABETH DEERAN, MD's credentials?
ELISABETH DEERAN, MD's NPI is 1992125785 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