What is Mia Williams's NPI number?

Mia Williams's National Provider Identifier (NPI) is 1598731572, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mia Williams's specialty?

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

Where is Mia Williams located?

Mia Williams's practice location on file with NPPES is 1145 Poquonnock Rd, Groton, CT 06340-4620.

What is Mia Williams's phone number?

The practice phone number listed in the NPPES registry for Mia Williams is (855) 700-8184.

Does Mia Williams accept Medicare?

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

Is Mia Williams's NPI active?

Yes — Mia Williams's NPI (1598731572) is active in the NPPES registry as of the last update on 2025-01-22.

IndividualActiveAccepts Medicare

Mia Williams, PA

NPI 1598731572 · Physician Assistant · Groton, CT

Mia Williams, PA is a Physician Assistant provider in Groton, CT (NPI 1598731572).

Provider details

NPI number: 1598731572
Entity type: Individual
Primary specialty: Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Credential: PA
Sex: Female
Sole proprietor: Yes

Practice location

1145 Poquonnock Rd

Groton, CT 06340-4620

Phone: (855) 700-8184

Street-level locationGet directions

More CT providers

Mailing address

415 W Golf Rd Ste 26

Arlington Heights, IL 60005-3923

Specialties & taxonomies

Physician AssistantPrimary363A00000X
Physician Assistants & Advanced Practice Nursing Providers

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

Profile Score

Detailed profile(86/100 index)

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

Registry tenure33% of score
20 yrs in NPPES registry
Profile completeness33% of score
83% of core fields populated
Practice footprint20% of score
1 documented practice location
Open Payments transparency13% of score
Has Open Payments disclosures (2024)

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.

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$25 across 1 record (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2006-02-28
Last updated: 2025-01-22
Certified: 2025-01-22

Frequently asked questions

What is Mia Williams's NPI number?: Mia Williams's National Provider Identifier (NPI) is 1598731572, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Mia Williams's specialty?: Mia Williams is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
Where is Mia Williams located?: Mia Williams's practice location on file with NPPES is 1145 Poquonnock Rd, Groton, CT 06340-4620.
What is Mia Williams's phone number?: The practice phone number listed in the NPPES registry for Mia Williams is (855) 700-8184.
Does Mia Williams accept Medicare?: Mia Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Mia Williams's NPI active?: Yes — Mia Williams's NPI (1598731572) is active in the NPPES registry as of the last update on 2025-01-22.

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

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Transparency — industry payments

Frequently asked questions