CLARENCE E WILLIAMS II MD
NPI 1154514842
Family Medicine in Leander, TX

Q: What is Clarence Williams's NPI number?

The NPI number for Clarence Williams is 1154514842. It was assigned to this individual provider in the NPPES registry on August 25, 2007.

Q: What is Clarence Williams's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for Clarence Williams was last updated on January 25, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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 August 25, 2007PECOS EnrolledAccepts Medicare Assignment

1007 S HIGHWAY 183, LEANDER, TX 78641(512) 260-4900(512) 260-4910 Get Directions Write a Review

NPPES record last updated: January 25, 2022. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 25, 2022, Jul 22, 2019 (2 updates tracked since 2019).

On this page

About Clarence E Williams Ii Md NPPES

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

CLARENCE E WILLIAMS II MD (NPI 1154514842) is an individual family medicine provider in Leander, Texas, licensed in Texas (M5977) and active in the NPI registry since August 2007. He is enrolled in Medicare PECOS, is affiliated with Baylor Scott & White Medical Center - Round Rock, and is a graduate of University Of Texas Medical Branch At Galveston (2004).

NPPES Registry Identity

NPI1154514842

Entity TypeIndividualMale

Primary Taxonomy207Q00000X

Provider Legal NameCLARENCE E WILLIAMS IICredential: MD

Location Address1007 S HIGHWAY 183Leander, TX 78641-1989

Mailing AddressPo Box 844658Dallas, TX 75284-4658

Phone(512) 260-4900

Fax(512) 260-4910

Sole ProprietorNo

Medical School CMSUniversity Of Texas Medical Branch At GalvestonGraduated 2004

Enumeration DateAugust 25, 2007

Last NPPES UpdateJanuary 25, 20222 updates tracked since enumeration

NPPES CertifiedJanuary 25, 2022

✔ NPI 1154514842 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in TX · M5977

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

1007 S HIGHWAY 183, Leander, TX 78641

Open in Google Maps ↗

Other Identifiers 1

OtherP00432028TX · Rr Ptan

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Clarence E Williams Ii Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9739276759

PECOS Enrollment IDI20071107000294

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.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

84 services73 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

75 services75 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

45 services35 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Baylor Scott & White Medical Center - Round Rock

Acute Care Hospitals · Round Rock, TX

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number670034

Location300 University BlvdRound Rock, TX 78664 · Williamson County

Emergency services Birthing friendly

Baylor Scott & White Medical Center - Marble Falls

Acute Care Hospitals · Marble Falls, TX

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number670108

Location810 W Highway 71Marble Falls, TX 78654 · Burnet County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78641 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

$97.05 typical visit price

range $17.52 – $136.11

Typical copayment $24.26 (range $4.38 – $34.02)

Most-billed visit code 99214

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 5

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

DR. PATRICIA C MONTEMAYOR MD

Obstetrics & Gynecology