Karin Porter-Williamson, M.D.
NPI 1427168046 · Internal Medicine Physician · Kansas City, KS
Enrolled with Medicare as Practitioner - Hospice/Palliative Care · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karin Porter-Williamson, M.D. is a Internal Medicine Physician provider in Kansas City, KS (NPI 1427168046).
Provider details
- NPI number
- 1427168046
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 04-29133 (KS)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
436 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 110 | $113 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 99 | $75 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 57 | $166 |
| Advance Care Planning, First 30 Minutes99497 | 53 | $72 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 33 | $168 |
| Advance Care Planning, Each Additional 30 Minutes99498 | 32 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Oxycodone Hcl | 35 |
| Mirtazapine | 20 |
| Gabapentin | 18 |
| Morphine Sulfatebrand: Morphine Sulfate Er | 18 |
| Methadone Hcl | 16 |
| Morphine Sulfate | 16 |
| Duloxetine Hcl | 15 |
| Lubiprostone | 12 |
| Oxycodone Myristatebrand: Xtampza Er | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-30
- Last updated
- 2013-07-01
Frequently asked questions
- What is Karin Porter-Williamson's NPI number?
- Karin Porter-Williamson's National Provider Identifier (NPI) is 1427168046, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karin Porter-Williamson's specialty?
- Karin Porter-Williamson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karin Porter-Williamson located?
- Karin Porter-Williamson's practice location on file with NPPES is Ku Medical Center Div of Gen Medicine, Kansas City, KS 66160-0001.
- What is Karin Porter-Williamson's phone number?
- The practice phone number listed in the NPPES registry for Karin Porter-Williamson is (913) 588-6005.
- Does Karin Porter-Williamson accept Medicare?
- Karin Porter-Williamson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karin Porter-Williamson's NPI active?
- Yes — Karin Porter-Williamson's NPI (1427168046) is active in the NPPES registry as of the last update on 2013-07-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.