NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1447257563 MD
Verify on CMS → Keith Williams, MD
Internal Medicine Physician in Medford, 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 174,792 in 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
183
Medicare Part D claims · 130 beneficiaries · Internal Medicine Physician avg: 3K
What the federal data shows
Keith Williams, MD filed 183 Medicare Part D claims in 2024 as an Internal Medicine Physician in Medford, Oregon.
- 183
- Part D claims, 2024
- ≥34th
- 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 Keith Williams, 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 1447257563), first enumerated 07/05/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 183 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
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- 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.
Compare Williams with other Internal Medicine Physician providers
Same primary specialty, same federal CMS NPPES roster.
All 83 Internal Medicine Physician providers in Medford, OR →
Also enrolled in Oregon
- Dr. Charmaine Clarisse Abalos, M.D. Medford, OR
- Dr. Soraya Abbassian, M.D. Portland, OR
- Dr. Nicholas Abbott, M.D. Tualatin, OR
- Dr. Mohamed Abdel Khalek, M.D Roseburg, OR
- Rand Abedalweli Portland, OR
- Dr. Robert Abernathy, M.D. Bend, OR
Other specialties in Medford: Mental Health Counselor (689) · Peer Specialist (200) · Addiction (Substance Use Disorder) Counselor (185) · Massage Therapist (180)
CMS NPPES provider registry desk
NPI 1447257563 · Internal Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1447257563
- ENUM-LEGACY 2005
- TAX-MEGA 175K Internal Medicine
- RX-LIGHT 183
- BOOK-LIGHT 2,511 in Oregon
- PHOTO-ENUM Peter Leidl, MD · 2005
Keith Williams, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
183 ≥ 34th percentile 34% 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-eligible specialty (heuristic, not verified)
Keith Williams, MD 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 Keith Williams, MD?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
183 93% vs specialty avg
Specialty distribution in Oregon
How 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 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 | 1447257563 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/05/2005 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
183
Total Claims
$5K
Total Drug Cost
130
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 188
- Total Day Supply
- 2,447
- Generic Drug Cost
- $2K
- Antibiotic Claims
- 94
Patient Demographics
- Average Patient Age
- 71.9 years
- Avg HCC Risk Score
- 0.96
- Gender Split
- 70% female / 30% male
- Age Distribution
- <65: 13, 65-74: 74, 75-84: 32, 85+: 11
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Keith Williams, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
19 claims
- Doxycycline Hyclate
Doxycycline Hyclate
17 claims
- Doxycycline Monohy…
Doxycycline Monohydrate
16 claims
- Sulfamethoxazole-T…
Sulfamethoxazole-Trimethoprim
11 claims
| Drug | Claims |
|---|---|
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 19 |
| Doxycycline Hyclate | 17 |
| Doxycycline Monohydrate | 16 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Keith Williams, MD fits within the Internal Medicine Physician landscape nationally.
174,792
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,785
Avg Claims per Provider
Keith Williams, MD's 183 claims are below the specialty average of 2,785.
Nationwide Internal Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Williams, both outside Oregon so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Internal Medicine Physician Providers in Oregon
Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as Williams.
One of 2,511 Internal Medicine Physician providers enrolled in Oregon, 11 are shown on this page.
Dr. Hazel Jane Abool
M.D.
Springfield, OR
Dr. Mohamed Aboukhashan
MD
Medford, OR
Dr. Allison Abraham
D.O.
Portland, OR
Dr. Mary Abraham
MD
Corvallis, OR
Dr. Heidi Abreu Pacheco
M.D
Mount Angel, OR
Compare Internal Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Keith Williams, MD's specialty? ▼
Keith Williams, MD specializes in Internal Medicine Physician and practices in Medford, Oregon. Credentials: MD.
How much does Keith Williams, MD prescribe under Medicare Part D? ▼
In 2024, Keith Williams, MD wrote 183 Medicare Part D claims totaling $5K in drug costs for 130 beneficiaries.
Where is Keith Williams, MD located? ▼
Keith Williams, MD is located at 555 BLACK OAK DR, Medford, OR, 97504. Phone: (541) 734-3430.
What is Keith Williams, MD's NPI number? ▼
Keith Williams, MD's National Provider Identifier (NPI) is 1447257563, issued on 07/05/2005.
How many Internal Medicine Physician providers are there in the US? ▼
There are 174,792 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,785 Medicare Part D claims per year.
What drugs does Keith Williams, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Keith Williams, MD's most frequently prescribed drugs include Amoxicillin-Clavulanate Potass, Doxycycline Hyclate, Doxycycline Monohydrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Keith Williams, MD accept Medicare? ▼
Keith Williams, MD appears in CMS Medicare data with 183 Part D claims and 130 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Keith Williams, MD's credentials? ▼
Keith Williams, MD's NPI is 1447257563 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 (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.