What is Sondra Williams's NPI number?

Sondra Williams's National Provider Identifier (NPI) is 1316461296, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Sondra Williams's specialty?

Sondra Williams is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).

Where is Sondra Williams located?

Sondra Williams's practice location on file with NPPES is 2000 S Thompson St, Flagstaff, AZ 86001-8759.

What is Sondra Williams's phone number?

The practice phone number listed in the NPPES registry for Sondra Williams is (928) 226-6400.

Does Sondra Williams accept Medicare?

Sondra Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Sondra Williams's NPI active?

Yes — Sondra Williams's NPI (1316461296) is active in the NPPES registry as of the last update on 2021-01-15.

IndividualActiveAccepts Medicare

Sondra Williams, PA

NPI 1316461296 · Physician Assistant · Flagstaff, AZ

Sondra Williams, PA is a Physician Assistant provider in Flagstaff, AZ (NPI 1316461296).

Provider details

NPI number: 1316461296
Entity type: Individual
Primary specialty: Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Credential: PA
Sex: Female
Sole proprietor: Yes
License: 6841 (AZ)

Practice location

2000 S Thompson St

Flagstaff, AZ 86001-8759

Phone: (928) 226-6400

Fax: (928) 226-6401

Street-level locationGet directions

More AZ providers

Mailing address

1200 N Beaver St

Flagstaff, AZ 86001-3118

Specialties & taxonomies

Physician AssistantPrimary363A00000XLicense 6841 (AZ)
Physician Assistants & Advanced Practice Nursing Providers

Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(51/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
9 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
17 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)
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	17	$105

Typical Medicare-allowed amounts for these services range $105–$105 (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.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Apixabanbrand: Eliquis	169	46
Metoprolol Succinate	119	49
Flecainide Acetate	52	20
Rivaroxabanbrand: Xarelto	43	15
Diltiazem Hclbrand: Diltiazem 24hr Er (cd)	23	—
Dofetilide	23	—
Carvedilol	13

Enumerated: 2017-08-01
Last updated: 2021-01-15
Certified: 2021-01-15

Frequently asked questions

What is Sondra Williams's NPI number?: Sondra Williams's National Provider Identifier (NPI) is 1316461296, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Sondra Williams's specialty?: Sondra Williams is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
Where is Sondra Williams located?: Sondra Williams's practice location on file with NPPES is 2000 S Thompson St, Flagstaff, AZ 86001-8759.
What is Sondra Williams's phone number?: The practice phone number listed in the NPPES registry for Sondra Williams is (928) 226-6400.
Does Sondra Williams accept Medicare?: Sondra Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Sondra Williams's NPI active?: Yes — Sondra Williams's NPI (1316461296) is active in the NPPES registry as of the last update on 2021-01-15.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)