2026 NPPES data Obstetrics Physician NPI 1871989178 MD/MPH
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CASEY HOMEYER, MD/MPH

Obstetrics Physician in PORTLAND, 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
43
Medicare Part D claims · 28 beneficiaries · Obstetrics Physician avg: 319
What the federal data reveals: CASEY HOMEYER, MD/MPH is a Obstetrics Physician ([object Object]) practicing in PORTLAND, Oregon with a Medicare Part D prescribing footprint of 43 claims across 28 beneficiaries .

What stands out: CASEY HOMEYER, MD/MPH filed 43 Medicare Part D claims in 2023 across PORTLAND, Oregon. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

CASEY HOMEYER, MD/MPH 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).

CASEY HOMEYER, MD/MPH at a glance

Quality data not reported

NPI registry status

Active

Issued 04/13/2015

NPI 1871989178

Primary specialty

Obstetrics Physician

Niche

1,402 US NPIs in this specialty

Medicare Part D claims

43 87% vs specialty avg

2023 prescription claims

Specialty avg: 319

Specialty distribution in Oregon

How Obstetrics Physician compares to other specialties among Oregon providers

Oregon providers

Obstetrics Physician share within Oregon

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

Specialty board-certification context

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

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

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

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

CASEY HOMEYER, MD/MPH is a Obstetrics Physician provider practicing in PORTLAND, Oregon, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD/MPH. NPI: 1871989178. 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.

CASEY HOMEYER, MD/MPH appears in the CMS NPPES registry as a Obstetrics Physician provider holding MD/MPH credentials at 3550 N INTERSTATE AVE, PORTLAND, OR, 97227, with a listed phone of (285) 424-6855. NPI 1871989178 was issued on 04/13/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HOMEYER 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 43 prescription claims written by this provider, covering 28 Medicare beneficiaries and totaling roughly $5K 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.

Obstetrics Physician is a narrow specialty nationwide, with 1,402 enrolled providers across 54 states and an average of 319 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

3550 N INTERSTATE AVE
PORTLAND, OR 97227

Provider Details

NPI 1871989178
Specialty Obstetrics Physician
Credentials MD/MPH
Gender Female
NPI Issued 04/13/2015

Medicare Part D Prescribing Data

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

43
Total Claims
$5K
Total Drug Cost
28
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
84
Total Day Supply
2,337
Generic Drug Cost
$1K

Patient Demographics

Average Patient Age
71.6 years
Avg HCC Risk Score
1.08
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
14

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

Obstetrics Physician Overview

How CASEY HOMEYER, MD/MPH fits within the Obstetrics Physician landscape nationally.

1,402
Obstetrics Physician Providers in US
54
States with Obstetrics Physician
319
Avg Claims per Provider

CASEY HOMEYER, MD/MPH's 43 claims are below the specialty average of 319.

Nearby Obstetrics Physician Providers in Oregon

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

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

Frequently Asked Questions

What is CASEY HOMEYER, MD/MPH's specialty?
CASEY HOMEYER, MD/MPH specializes in Obstetrics Physician and practices in PORTLAND, Oregon. Credentials: MD/MPH.
How much does CASEY HOMEYER, MD/MPH prescribe under Medicare Part D?
In 2023, CASEY HOMEYER, MD/MPH wrote 43 Medicare Part D claims totaling $5K in drug costs for 28 beneficiaries.
Where is CASEY HOMEYER, MD/MPH located?
CASEY HOMEYER, MD/MPH is located at 3550 N INTERSTATE AVE, PORTLAND, OR, 97227. Phone: (285) 424-6855.
What is CASEY HOMEYER, MD/MPH's NPI number?
CASEY HOMEYER, MD/MPH's National Provider Identifier (NPI) is 1871989178, issued on 04/13/2015.
How many Obstetrics Physician providers are there in the US?
There are 1,402 Obstetrics Physician providers across 54 states in the US. The average Obstetrics Physician provider writes 319 Medicare Part D claims per year.
What drugs does CASEY HOMEYER, MD/MPH prescribe most often?
Based on 2023 Medicare Part D data, CASEY HOMEYER, MD/MPH's most frequently prescribed drugs include Estradiol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CASEY HOMEYER, MD/MPH accept Medicare?
CASEY HOMEYER, MD/MPH appears in CMS Medicare data with 43 Part D claims and 28 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CASEY HOMEYER, MD/MPH's credentials?
CASEY HOMEYER, MD/MPH's NPI is 1871989178 with credentials MD/MPH. 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