Katy Williams, CRNA
NPI 1205180510 · Certified Registered Nurse Anesthetist · Ann Arbor, MI
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katy Williams, CRNA is a Certified Registered Nurse Anesthetist provider in Ann Arbor, MI (NPI 1205180510).
Provider details
- NPI number
- 1205180510
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNA
- Sex
- Female
- Sole proprietor
- No
- License
- 4704292694 (MI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 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
11 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) |
|---|---|---|
| Anesthesia for X-Ray Or Radiation Therapy01922 | 11 | $133 |
Typical Medicare-allowed amounts for these services range $133–$133 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-11-08
- Last updated
- 2019-01-17
Frequently asked questions
- What is Katy Williams's NPI number?
- Katy Williams's National Provider Identifier (NPI) is 1205180510, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katy Williams's specialty?
- Katy Williams is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katy Williams located?
- Katy Williams's practice location on file with NPPES is 1500 E Medical Center Dr, Ann Arbor, MI 48109-5048.
- What is Katy Williams's phone number?
- The practice phone number listed in the NPPES registry for Katy Williams is (734) 936-4280.
- Does Katy Williams accept Medicare?
- Katy Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katy Williams's NPI active?
- Yes — Katy Williams's NPI (1205180510) is active in the NPPES registry as of the last update on 2019-01-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.