NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1821175068 M.D., M.P.H.
Verify on CMS → Joanne Wu, M.D., M.P.H.
Family 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 150,125 in Family 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
2K
Medicare Part D claims · 206 beneficiaries · Family Medicine Physician avg: 4K
Generic prescribing
87%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Joanne Wu, M.D., M.P.H. filed 2,256 Medicare Part D claims in 2024 as a Family Medicine Physician in Portland, Oregon, prescribing 87% generic.
- 2K
- Part D claims, 2024
- 87%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥85th
- 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 Joanne Wu, M.D., M.P.H.
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 1821175068), first enumerated 11/01/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 2,256 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
- 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 1821175068 · Family Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1821175068
- ENUM-LEGACY 2006
- TAX-MEGA 150K Family Medicine
- RX-MID 2,256
- BOOK-LIGHT 2,711 in Oregon
- PHOTO-ENUM Anthony Inzerello · 2006
Joanne Wu, M.D., M.P.H.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
2,256 ≥ 85th percentile 85% of 1,416,883 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 · 2024
✓
Board certification likely (heuristic, not verified)
Joanne Wu, M.D., M.P.H. 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 Joanne Wu, M.D., M.P.H.?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
2,256 36% vs specialty avg
Specialty distribution in Oregon
How Family 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 Family 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 | 1821175068 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | M.D., M.P.H. |
| Gender | Female |
| NPI Issued | 11/01/2006 |
Hospital and facility affiliations
Facilities where Joanne Wu, M.D., M.P.H. 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.
Northwest Primary Care Group PC
Portland, OR
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
Joanne Wu, M.D., M.P.H. - brand share 12.0%
Family Medicine Physician average
12% brand-name claims vs 87% generic, on 2,256 2024 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 2024.
2,256
Total Claims
$184K
Total Drug Cost
206
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,492.767
- Total Day Supply
- 161,556
- Brand vs Generic
- 12% brand / 87% generic
- Brand Drug Cost
- $134K
- Generic Drug Cost
- $49K
- Opioid Claims
- 66 (2.9% rate)
- Antibiotic Claims
- 34
Patient Demographics
- Average Patient Age
- 75.1 years
- Avg HCC Risk Score
- 0.90
- Gender Split
- 72% female / 28% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Joanne Wu, M.D., M.P.H. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Levothyroxine Sodium
Levothyroxine Sodium
141 claims
- Atorvastatin Calcium
Atorvastatin Calcium
136 claims
- Losartan Potassium
Losartan Potassium
133 claims
- Amlodipine Besylate
Amlodipine Besylate
95 claims
- Hydrochlorothiazide
Hydrochlorothiazide
92 claims
- Lisinopril
Lisinopril
79 claims
- Metoprolol Succinate
Metoprolol Succinate
63 claims
- Gabapentin 54
Gabapentin
54 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 141 |
| Atorvastatin Calcium | 136 |
| Losartan Potassium | 133 |
| Amlodipine Besylate | 95 |
| Hydrochlorothiazide | 92 |
| Lisinopril | 79 |
| Metoprolol Succinate | 63 |
| Gabapentin | 54 |
| Metformin Hcl | 39 |
| Furosemide | 38 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Joanne Wu, M.D., M.P.H. fits within the Family Medicine Physician landscape nationally.
150,125
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,519
Avg Claims per Provider
Joanne Wu, M.D., M.P.H.'s 2,256 claims are below the specialty average of 3,519.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Wu, both outside Oregon so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Medicine Physician Providers in Oregon
Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as Wu.
One of 2,711 Family Medicine Physician providers enrolled in Oregon, 5 are shown here.
Dr. Roxana Abbott
DO
Portland, OR
Dr. David Abdun-Nur
M.D.
Grants Pass, OR
Dr. Traci Ackron
D.O.
Hillsboro, OR
Dr. Orlando Acosta
MD
Hood River, OR
Dr. Michele Adamcak
D.O.
Tigard, OR
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Joanne Wu, M.D., M.P.H.'s specialty? ▼
Joanne Wu, M.D., M.P.H. specializes in Family Medicine Physician and practices in Portland, Oregon. Credentials: M.D., M.P.H..
How much does Joanne Wu, M.D., M.P.H. prescribe under Medicare Part D? ▼
In 2024, Joanne Wu, M.D., M.P.H. wrote 2,256 Medicare Part D claims totaling $184K in drug costs for 206 beneficiaries.
Where is Joanne Wu, M.D., M.P.H. located? ▼
Joanne Wu, M.D., M.P.H. is located at 6327 SE MILWAUKIE AVE, Portland, OR, 97202. Phone: (503) 659-4988.
What is Joanne Wu, M.D., M.P.H.'s NPI number? ▼
Joanne Wu, M.D., M.P.H.'s National Provider Identifier (NPI) is 1821175068, issued on 11/01/2006.
Does Joanne Wu, M.D., M.P.H. prescribe more brand-name or generic drugs? ▼
Joanne Wu, M.D., M.P.H.'s prescribing is 12% brand-name and 87% generic drugs by claim count, with $134K in brand drug costs.
Does Joanne Wu, M.D., M.P.H. prescribe opioids? ▼
Yes, Joanne Wu, M.D., M.P.H. had 66 opioid claims in 2024 with an opioid prescribing rate of 2.9%.
How many Family Medicine Physician providers are there in the US? ▼
There are 150,125 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,519 Medicare Part D claims per year.
What drugs does Joanne Wu, M.D., M.P.H. prescribe most often? ▼
Based on 2024 Medicare Part D data, Joanne Wu, M.D., M.P.H.'s most frequently prescribed drugs include Levothyroxine Sodium, Atorvastatin Calcium, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Joanne Wu, M.D., M.P.H. accept Medicare? ▼
Joanne Wu, M.D., M.P.H. appears in CMS Medicare data with 2,256 Part D claims and 206 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Joanne Wu, M.D., M.P.H.'s credentials? ▼
Joanne Wu, M.D., M.P.H.'s NPI is 1821175068 with credentials M.D., M.P.H.. 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.