NPI registry status
Active
2026 NPPES data Geriatric Medicine (Internal Medicine) Physician NPI 1801087713 M.D.
Verify on CMS → Bella Nelson, M.D.
Geriatric Medicine (Internal Medicine) Physician in Portland, 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 4,161 in Geriatric 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
124
Medicare Part D claims · 52 beneficiaries · Geriatric Medicine (Internal Medicine) Physician avg: 4K
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
86/100
▲ 3 pts above national avg 83.1 · Above neutral
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Bella Nelson, M.D. reported a CMS MIPS final score of 86/100 - above the 83.1 national average - and filed 124 Medicare Part D claims in 2023.
- 86/100
- MIPS score · +3 vs avg
- 124
- Part D claims, 2023
- 85%
- 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.
Bella Nelson, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
86 Top 48% higher than 52% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Bella Nelson, M.D. sits
This provider among geriatric medicine (internal medicine) physician peers
Across the 724 geriatric medicine (internal medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Bella Nelson, M.D. writes more Part D claims than 11% of them and scores higher on MIPS quality than 54% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one geriatric medicine (internal medicine) physician peer from a representative sample of 60; the gold marker is Bella Nelson, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Bella Nelson, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Bella Nelson, M.D.?
High performer (top quartile)Primary specialty
Geriatric Medicine (Internal Medicine) Physician
Medicare Part D claims
124 97% vs specialty avg
MIPS final score
86/100 2.9 pts vs avg
Specialty distribution in Oregon
How Geriatric Medicine (Internal Medicine) Physician compares to other specialties among Oregon providers
Medicare quality performance, MIPS
Bella Nelson, M.D.'s 2023 MIPS final score plotted against the Geriatric Medicine (Internal Medicine) Physician national average
- MIPS Final Score
- 86/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Geriatric Medicine (Internal Medicine) Physician) - 86/100 vs national avg 83.1
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).
Bella Nelson, M.D. appears in the CMS NPPES registry as a Geriatric Medicine (Internal Medicine) Physician provider holding M.D. credentials at 3181 SW SAM JACKSON PARK RD, Portland, OR, 97239, with a listed phone of (503) 494-9000. NPI 1801087713 was issued on 08/06/2007.
Medicare Part D records for calendar year 2023 show 124 prescription claims written by this provider, covering 52 Medicare beneficiaries and totaling roughly $9K in drug spend, split 15% brand-name and 85% generic by claim count, with an opioid prescribing rate of 11.3%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 86/100 for the 2023 performance year (Quality 77.8, Cost 74.2), compared with the national average of 83.1.
Geriatric Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 4,161 enrolled providers across 52 states and an average of 4,450 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
Provider Details
| NPI | 1801087713 |
|---|---|
| Specialty | Geriatric Medicine (Internal Medicine) Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 08/06/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
86.0353
Final Score
Avg: 83.1
77.8032
Quality
74.1514
Cost
99
Promoting Interoperability
Reporting: Group practice
Brand vs generic prescribing mix · Typical
Bella Nelson, M.D. - brand share 15.0%
Geriatric Medicine (Internal Medicine) Physician average
15% brand-name claims vs 85% generic, on 124 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.
124
Total Claims
$9K
Total Drug Cost
52
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 183
- Total Day Supply
- 4,489
- Brand vs Generic
- 15% brand / 85% generic
- Brand Drug Cost
- $7K
- Generic Drug Cost
- $2K
- Opioid Claims
- 14 (11.3% rate)
Patient Demographics
- Average Patient Age
- 75.9 years
- Avg HCC Risk Score
- 2.41
- Gender Split
- 50% female / 50% male
More Geriatric Medicine (Internal Medicine) Physician in OR →
All providers in Oregon →
Compare specialties →
Geriatric Medicine (Internal Medicine) Physician Overview
How Bella Nelson, M.D. fits within the Geriatric Medicine (Internal Medicine) Physician landscape nationally.
4,161
Geriatric Medicine (Internal Medicine) Physician Providers in US
52
States with Geriatric Medicine (Internal Medicine) Physician
4,450
Avg Claims per Provider
Bella Nelson, M.D.'s 124 claims are below the specialty average of 4,450.
Nearby Geriatric 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 Nelson.
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Oregon medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Geriatric Medicine (Internal Medicine) Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Oregon
Frequently Asked Questions
What is Bella Nelson, M.D.'s specialty? ▼
Bella Nelson, M.D. specializes in Geriatric Medicine (Internal Medicine) Physician and practices in Portland, Oregon. Credentials: M.D..
How much does Bella Nelson, M.D. prescribe under Medicare Part D? ▼
In 2023, Bella Nelson, M.D. wrote 124 Medicare Part D claims totaling $9K in drug costs for 52 beneficiaries.
What is Bella Nelson, M.D.'s Medicare quality score? ▼
Bella Nelson, M.D. has a CMS MIPS Final Score of 86/100 (Quality: 77.8, Cost: 74.2). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Bella Nelson, M.D. located? ▼
Bella Nelson, M.D. is located at 3181 SW SAM JACKSON PARK RD, Portland, OR, 97239. Phone: (503) 494-9000.
What is Bella Nelson, M.D.'s NPI number? ▼
Bella Nelson, M.D.'s National Provider Identifier (NPI) is 1801087713, issued on 08/06/2007.
Does Bella Nelson, M.D. prescribe more brand-name or generic drugs? ▼
Bella Nelson, M.D.'s prescribing is 15% brand-name and 85% generic drugs by claim count, with $7K in brand drug costs.
Does Bella Nelson, M.D. prescribe opioids? ▼
Yes, Bella Nelson, M.D. had 14 opioid claims in 2023 with an opioid prescribing rate of 11.3%.
How many Geriatric Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 4,161 Geriatric Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Internal Medicine) Physician provider writes 4,450 Medicare Part D claims per year.
Does Bella Nelson, M.D. accept Medicare? ▼
Bella Nelson, M.D. appears in CMS Medicare data with 124 Part D claims and 52 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Bella Nelson, M.D.'s credentials? ▼
Bella Nelson, M.D.'s NPI is 1801087713 with credentials M.D.. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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
Compiled from official public sources by the PlainDoctor editorial team.