Quick answers
- Where does Irina Williams see patients?
- Medicare's clinician data lists 3 practice locations, including Denver, CO, Livermore, CA and Redwood City, CA. Call before your visit to confirm the address.
- What is Irina Williams's specialty?
- Medicare lists Anesthesiology as the primary specialty, and also Pain Management.
- Does Irina Williams accept Medicare assignment?
- Yes. Medicare's clinician data says Irina Williams accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Irina Williams offer telehealth?
- Medicare's clinician data says Irina Williams offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Irina Williams?
- (720) 740-2520, as listed in official Medicare / NPI Registry data.
- What is Irina Williams's NPI number?
- 1508187600. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Irina Williams is enrolled with Medicare (CMS data updated 2026-10-02).
- 3513 Brighton Blvd, Suite 457Denver, CO 80216 (720) 740‑2520
- 530 Egret RdLivermore, CA 94551 (888) 691‑5818
- 905 Maple StRedwood City, CA 94063 (650) 399‑2000
Group practices
Medicare enrollment lists Irina Williams as a member of these groups (CMS data updated 2026-10-02).
- Permanente Medical Group Inc10,996 clinicians in the group
- Lin Health Medical Group PA8 clinicians in the group
- Lin Health Medical Group of California PC4 clinicians in the group
Specialties
- Anesthesiologyprimary
- Pain Managementalso
Other anesthesiologists in Denver
Clinicians with the same Medicare primary specialty in Denver, CO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2008 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1508187600 |
| Corrections | Report 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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians