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Colorectal Surgery (Proctology)

Ulrik G. Wallin, MD

Works at hospitals in Seattle, WA · Washington

Summary

Dr. Ulrik G. Wallin, MD is a colorectal surgeon at 1145 Broadway, Seattle, WA 98122. Phone: (206) 329-1760. Accepts Medicare assignment. In 2024, Ulrik G. Wallin had 163 Original Medicare patients and 311 services. NPI 1598054355. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Colorectal surgeon (Medicare lists Colorectal Surgery (Proctology))
  • Address: 1145 Broadway, Seattle, WA 98122 · Directions (1 more location)
  • Phone: (206) 329‑1760
  • Medicare: Accepts Medicare assignment
  • Hospital: Swedish Medical Center
  • Group practice: Swedish Health Services (+1 more)
  • Medical school: graduated 1997 (29 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Ulrik G. Wallin, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Ulrik G. Wallin accept Medicare assignment?
Yes. Medicare's clinician data says Ulrik G. Wallin accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Ulrik G. Wallin see?
In 2024, CMS data shows 163 Original Medicare patients and 311 services for Ulrik G. Wallin. This counts Original Medicare only and measures volume, not quality.
What is Ulrik G. Wallin's NPI number?
1598054355. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Ulrik G. Wallin, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients163
Services billed to Medicare311
Different services or procedures47
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)40 services
  2. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)32 services
  3. Diagnostic exam of anus using an endoscope (46600)30 services
  4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)30 services
  5. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)24 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol66%
  • High blood pressure59%
  • Arthritis42%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)26%
  • Chronic kidney disease21%
  • Ischemic heart disease19%

Hospitals where Ulrik G. Wallin works

Medicare's Facility Affiliation Data lists Ulrik G. Wallin at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Swedish Medical CenterSeattle, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 500027

Practice locations

Addresses where Ulrik G. Wallin is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Ulrik G. Wallin as a member of these groups (CMS data updated October 2, 2026).

  • Swedish Health Services1,037 clinicians in the group
  • The Polyclinic PLLC365 clinicians in the group

Specialties

Find other Colorectal Surgery (Proctology) doctors in Washington →

Other colorectal surgeons in Seattle

Clinicians with the same Medicare primary specialty in Seattle, WA — not a recommendation.

All colorectal surgeons in Seattle →

Other clinicians in Swedish Health Services

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year1997 (29 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1598054355
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians