SARAH JESSICA WILLIAMSON MD
NPI 1306423231
Dermatology - Dermatopathology in San Antonio, TX

Q: What is Sarah Williamson's NPI number?

The NPI number for Sarah Williamson is 1306423231. It was assigned to this individual provider in the NPPES registry on March 26, 2021.

Q: What is Sarah Williamson's specialty?

The primary specialty registered for this NPI is Dermatology, specializing in Dermatopathology, with taxonomy code 207ND0900X.

Q: When was this NPI record last updated?

The NPPES record for Sarah Williamson was last updated on August 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since March 26, 2021PECOS Enrolled

7979 WURZBACH RD, SAN ANTONIO, TX 78229(210) 450-1143(210) 450-0407 Get Directions Write a Review

NPPES record last updated: August 26, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 26, 2026, Jun 11, 2025, May 19, 2025 and 2 more (5 updates tracked since 2021).

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About Sarah Jessica Williamson Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SARAH JESSICA WILLIAMSON MD (NPI 1306423231) is an individual dermatopathology provider in San Antonio, Texas, licensed in Texas (W7491) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1306423231

Entity TypeIndividualFemale

Primary Taxonomy207ND0900X

Provider Legal NameSARAH JESSICA WILLIAMSONCredential: MD

Location Address7979 WURZBACH RDSan Antonio, TX 78229-4427

Mailing Address7979 Wurzbach RdSan Antonio, TX 78229-4427 · (210) 450-1143 · Fax (210) 450-0407

Phone(210) 450-1143

Fax(210) 450-0407

Sole ProprietorNo

Enumeration DateMarch 26, 2021

Last NPPES UpdateAugust 26, 20265 updates tracked since enumeration

NPPES CertifiedAugust 26, 2026

✔ NPI 1306423231 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyDermatology · DermatopathologyAllopathic & Osteopathic Physicians

Taxonomy Code207ND0900X

License✔ Licensed in TX · W7491

Definition

A dermatopathologist has the expertise to diagnose and monitor diseases of the skin including infectious, immunologic, degenerative and neoplastic diseases. This entails the examination and interpretation of specially prepared tissue sections, cellular scrapings and smears of skin lesions by means of routine and special (electron and fluorescent) microscopes.

Also ListedDermatologyTaxonomy 207N00000X · License W7491 (TX)

7979 WURZBACH RD, San Antonio, TX 78229

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Secondary Practice Locations 2

Location 12500 Metrohealth DrCleveland, OH 44109-1900 · Phone (216) 778-3376

Location 2200 1st St SWRochester, MN 55905-1900 · Phone (507) 284-2511

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Texas, CareSource and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Sarah Jessica Williamson Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Sarah Williamson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mayo Clinic

1,056 mi

Infectious Disease

200 1ST ST SW
Rochester, MN 55905

Reassigned Medicare billing, Minnesota enrollment
6,534 clinicians in this Medicare group

NPI 1114343860 (507) 284-2511

Oakview Dermatology

1,159 mi

Dermatology

2111 E STATE ST
Athens, OH 45701

Reassigned Medicare billing, Ohio enrollment
20 clinicians in this Medicare group

NPI 1063671063 (740) 566-4621

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78229 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$84.92 typical visit price

range $54.84 – $166.88

Typical copayment $21.23 (range $13.71 – $41.72)

Most-billed visit code 99203

Established Patient

$68.55 typical visit price

range $17.52 – $136.11

Typical copayment $17.13 (range $4.38 – $34.02)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. MATTHEW JAMES BUTLER M.D.

Internal Medicine (Hematology & Oncology)