NPI registry status
Active
2026 NPPES data Addiction Medicine (Internal Medicine) Physician NPI 1801022959 MD
Verify on CMS → Andrew Seaman, MD
Addiction Medicine (Internal Medicine) Physician in Hillsboro, Oregon.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 553 in Addiction Medicine (Internal Medicine) Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
331
Medicare Part D claims · 139 beneficiaries · Addiction Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.7K
7 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Andrew Seaman, MD filed 331 Medicare Part D claims in 2023 as an Addiction Medicine (Internal Medicine) Physician in Hillsboro, Oregon, prescribing 89% generic.
- 331
- Part D claims, 2023
- 89%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥57th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Andrew Seaman, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1801022959), first enumerated 06/03/2009.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 331 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$1.7K in reported industry payments (7 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1801022959 · Addiction Medicine (Internal Medicine) Physician
NPI-10 · ENUM-MID · TAX-NARROW · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1801022959
- ENUM-MID 2009
- TAX-NARROW 553
- RX-LIGHT 331
- BOOK-THIN 12 in Oregon
- PHOTO-ENUM Joshua Hare · 2009
Andrew Seaman, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
331 ≥ 57th percentile 57% of 1,370,886 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Andrew Seaman, 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).
What does the federal data show about Andrew Seaman, MD?
Quality data not reportedPrimary specialty
Addiction Medicine (Internal Medicine) Physician
Medicare Part D claims
331 76% vs specialty avg
Specialty distribution in Oregon
How Addiction Medicine (Internal Medicine) Physician compares to other specialties among Oregon providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Addiction Medicine (Internal Medicine) Physician. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1801022959 |
|---|---|
| Specialty | Addiction Medicine (Internal Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/03/2009 |
Hospital and facility affiliations
Facilities where Andrew Seaman, 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.
Belonging Medical Group PLLC
Westborough, 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).
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 Andrew Seaman, MD. Source: openpaymentsdata.cms.gov.
Total received
$1.7K
Largest payer
ABBVIE INC.
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.
Brand vs generic prescribing mix · Typical
Andrew Seaman, MD - brand share 11.0%
Addiction Medicine (Internal Medicine) Physician average
11% brand-name claims vs 89% generic, on 331 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.
331
Total Claims
$24K
Total Drug Cost
139
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 345
- Total Day Supply
- 5,268
- Brand vs Generic
- 11% brand / 89% generic
- Brand Drug Cost
- $11K
- Generic Drug Cost
- $13K
Patient Demographics
- Average Patient Age
- 46.1 years
- Avg HCC Risk Score
- 1.15
- Gender Split
- 59% female / 41% male
- Age Distribution
- <65: 125, 65-74: 13, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Andrew Seaman, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Buprenorphine-Nalo…
Buprenorphine-Naloxone
170 claims
- Buprenorphine Hcl 27
Buprenorphine Hcl
27 claims
- Suboxone 27
Suboxone
27 claims
- Clonidine Hcl 17
Clonidine Hcl
17 claims
- Gabapentin 13
Gabapentin
13 claims
| Drug | Claims |
|---|---|
| Buprenorphine-Naloxone Buprenorphine Hcl/Naloxone Hcl | 170 |
| Buprenorphine Hcl | 27 |
| Suboxone Buprenorphine Hcl/Naloxone Hcl | 27 |
| Clonidine Hcl | 17 |
| Gabapentin | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Addiction Medicine (Internal Medicine) Physician in OR →
All providers in Oregon →
Compare specialties →
Addiction Medicine (Internal Medicine) Physician Overview
How Andrew Seaman, MD fits within the Addiction Medicine (Internal Medicine) Physician landscape nationally.
553
Addiction Medicine (Internal Medicine) Physician Providers in US
46
States with Addiction Medicine (Internal Medicine) Physician
1,403
Avg Claims per Provider
Andrew Seaman, MD's 331 claims are below the specialty average of 1,403.
Nationwide Addiction Medicine (Internal Medicine) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Seaman, both outside Oregon so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2009)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Addiction Medicine (Internal Medicine) Physician Providers in Oregon
Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as Seaman.
One of 12 Addiction Medicine (Internal Medicine) Physician providers enrolled in Oregon, 5 are shown here.
Frequently Asked Questions
What is Andrew Seaman, MD's specialty? ▼
Andrew Seaman, MD specializes in Addiction Medicine (Internal Medicine) Physician and practices in Hillsboro, Oregon. Credentials: MD.
How much does Andrew Seaman, MD prescribe under Medicare Part D? ▼
In 2023, Andrew Seaman, MD wrote 331 Medicare Part D claims totaling $24K in drug costs for 139 beneficiaries.
Where is Andrew Seaman, MD located? ▼
Andrew Seaman, MD is located at 18610 NW CORNELL RD, Hillsboro, OR, 97124. Phone: (503) 216-9360.
What is Andrew Seaman, MD's NPI number? ▼
Andrew Seaman, MD's National Provider Identifier (NPI) is 1801022959, issued on 06/03/2009.
Does Andrew Seaman, MD prescribe more brand-name or generic drugs? ▼
Andrew Seaman, MD's prescribing is 11% brand-name and 89% generic drugs by claim count, with $11K in brand drug costs.
How many Addiction Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 553 Addiction Medicine (Internal Medicine) Physician providers across 46 states in the US. The average Addiction Medicine (Internal Medicine) Physician provider writes 1,403 Medicare Part D claims per year.
What drugs does Andrew Seaman, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Andrew Seaman, MD's most frequently prescribed drugs include Buprenorphine-Naloxone, Buprenorphine Hcl, Suboxone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Andrew Seaman, MD accept Medicare? ▼
Andrew Seaman, MD appears in CMS Medicare data with 331 Part D claims and 139 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Andrew Seaman, MD's credentials? ▼
Andrew Seaman, MD's NPI is 1801022959 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
View source datasets and methodology notes
- 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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.