2026 NPPES data Obstetrics & Gynecology Physician NPI 1831148196 DO
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MARJORIE HARVILL-BROOKS, DO

Obstetrics & Gynecology Physician in MEDFORD, Oregon. 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
421
Medicare Part D claims · 195 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Industry payments
$9.1K
46 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

MARJORIE HARVILL-BROOKS, DO filed 421 Medicare Part D claims in 2023 as a Obstetrics & Gynecology Physician in MEDFORD, Oregon.

421
Part D claims, 2023
$9.1K
industry payments (Sunshine Act)

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.

MARJORIE HARVILL-BROOKS, DO's Medicare Part D volume vs every U.S. prescriber

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

421 Top 38% higher than 62% 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%). This entry sits in this band. 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-eligible specialty (heuristic — not verified)

MARJORIE HARVILL-BROOKS, DO practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about MARJORIE HARVILL-BROOKS, DO?

Quality data not reported

NPI registry status

Active

Issued 05/06/2006

NPI 1831148196

Primary specialty

Obstetrics & Gynecology Physician

Mid-sized

44,313 US NPIs in this specialty

Medicare Part D claims

421 135% vs specialty avg

2023 prescription claims

Specialty avg: 179

Specialty distribution in Oregon

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

Oregon providers

Obstetrics & Gynecology Physician share within Oregon

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

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).

MARJORIE HARVILL-BROOKS, DO appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding DO credentials at 940 ROYAL AVE, MEDFORD, OR, 97504, with a listed phone of (541) 732-7460. NPI 1831148196 was issued on 05/06/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HARVILL-BROOKS 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 421 prescription claims written by this provider, covering 195 Medicare beneficiaries and totaling roughly $39K in drug spend, with an opioid prescribing rate of 17.1%. 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

940 ROYAL AVE
MEDFORD, OR 97504

Provider Details

NPI 1831148196
Specialty Obstetrics & Gynecology Physician
Credentials DO
Gender Female
NPI Issued 05/06/2006

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 MARJORIE HARVILL-BROOKS, DO. Source: openpaymentsdata.cms.gov.

Total received

$9.1K

Largest payer

COLOPLAST CORP

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.

Medicare Part D Prescribing Data

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

421
Total Claims
$39K
Total Drug Cost
195
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
672
Total Day Supply
14,352
Generic Drug Cost
$12K
Opioid Claims
72 (17.1% rate)
Antibiotic Claims
137

Patient Demographics

Average Patient Age
72.6 years
Avg HCC Risk Score
1.12

Top Prescribed Drugs (Medicare Part D)

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

What MARJORIE HARVILL-BROOKS, DO 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
Cephalexin
67
Oxycodone Hcl
62
Estradiol
48
Cefuroxime
Cefuroxime Axetil
30
Oxybutynin Chloride Er
Oxybutynin Chloride
27
Oxybutynin Chloride
14
Sulfamethoxazole-Trimethoprim
Sulfamethoxazole/Trimethoprim
14
Myrbetriq
Mirabegron
11
Trospium Chloride
11
Premarin
"Estrogens
N/A

* 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 MARJORIE HARVILL-BROOKS, DO 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

MARJORIE HARVILL-BROOKS, DO's 421 claims are above the specialty average of 179.

Nearby Obstetrics & Gynecology Physician Providers in Oregon

Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as HARVILL-BROOKS.

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

Frequently Asked Questions

What is MARJORIE HARVILL-BROOKS, DO's specialty?
MARJORIE HARVILL-BROOKS, DO specializes in Obstetrics & Gynecology Physician and practices in MEDFORD, Oregon. Credentials: DO.
How much does MARJORIE HARVILL-BROOKS, DO prescribe under Medicare Part D?
In 2023, MARJORIE HARVILL-BROOKS, DO wrote 421 Medicare Part D claims totaling $39K in drug costs for 195 beneficiaries.
Where is MARJORIE HARVILL-BROOKS, DO located?
MARJORIE HARVILL-BROOKS, DO is located at 940 ROYAL AVE, MEDFORD, OR, 97504. Phone: (541) 732-7460.
What is MARJORIE HARVILL-BROOKS, DO's NPI number?
MARJORIE HARVILL-BROOKS, DO's National Provider Identifier (NPI) is 1831148196, issued on 05/06/2006.
Does MARJORIE HARVILL-BROOKS, DO prescribe opioids?
Yes, MARJORIE HARVILL-BROOKS, DO had 72 opioid claims in 2023 with an opioid prescribing rate of 17.1%.
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 MARJORIE HARVILL-BROOKS, DO prescribe most often?
Based on 2023 Medicare Part D data, MARJORIE HARVILL-BROOKS, DO's most frequently prescribed drugs include Cephalexin, Oxycodone Hcl, Estradiol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARJORIE HARVILL-BROOKS, DO accept Medicare?
MARJORIE HARVILL-BROOKS, DO appears in CMS Medicare data with 421 Part D claims and 195 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARJORIE HARVILL-BROOKS, DO's credentials?
MARJORIE HARVILL-BROOKS, DO's NPI is 1831148196 with credentials DO. 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