1. Home
  2. Directory
  3. Texas
  4. Austin
  5. Internal Medicine
  6. NPI Profile

DUSTYN ERIK WILLIAMS MD
NPI 1699064766
Internal Medicine - Endocrinology, Diabetes & Metabolism in Austin, TX

Active since March 29, 2011PECOS EnrolledAccepts Medicare Assignment
11671 JOLLYVILLE RD STE 202, AUSTIN, TX 78759(512) 343-9848(877) 296-2908 Get Directions Write a Review

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

About Dustyn Erik Williams Md NPPES

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

DUSTYN ERIK WILLIAMS MD (NPI 1699064766) is an individual endocrinology, diabetes & metabolism provider in Austin, Texas, licensed in Texas (R3247) and active in the NPI registry since March 2011. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Tulane University School Of Medicine (2011).

NPPES Registry Identity

NPI1699064766
Entity TypeIndividualMale
Primary Taxonomy207RE0101X
Provider Legal NameDUSTYN ERIK WILLIAMSCredential: MD
Location Address11671 JOLLYVILLE RD STE 202Austin, TX 78759-4141
Mailing Address11671 Jollyville Rd Ste 202Austin, TX 78759-4141 · (512) 343-9848 · Fax (877) 296-2908
Phone(512) 343-9848
Fax(877) 296-2908
Sole ProprietorYes
Medical School CMSTulane University School Of MedicineGraduated 2011
Enumeration DateMarch 29, 2011
Last NPPES UpdateFebruary 25, 2026
NPPES CertifiedFebruary 25, 2026
✔ NPI 1699064766 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in TX · R3247
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
Also ListedInternal MedicineTaxonomy 207R00000X · License R3247 (TX), 141191 (CA)
11671 JOLLYVILLE RD STE 202, Austin, TX 78759
Open in Google Maps ↗

Secondary Practice Locations 2

Location 13007 Longhorn Blvd Ste 102Austin, TX 78758-7632 · Phone (512) 566-4233
Location 22111 Kramer Ln Ste 100Austin, TX 78758-4032 · Phone (512) 508-8320 · Fax (512) 488-1745

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.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

Dustyn Erik Williams 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 ID7810113404
PECOS Enrollment IDI20200622001256, I20230830001628
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 8

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.
155 services31 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
89 services27 patients
Management using the results of remote vital sign monitoring per calendar month, first 20 minutes 99457
This service involves reviewing and managing your health data, which is remotely monitored and collected. Your vital signs like heart rate and blood pressure are tracked regularly throughout the month. The first 20 minutes of this data analysis per month is included in this service.
81 services14 patients
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212
This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.
41 services15 patients
Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes 99458
This service involves analyzing your vital signs, like heart rate and blood pressure, remotely collected over a month. Each additional 20 minutes spent on management refers to extra time spent reviewing, interpreting your data, and planning your care. It's a critical part of ensuring your wellbeing.
35 services11 patients
Principal care management services for a single high-risk disease, first 30 minutes provided personally by qualified health care professional, per calendar month. 99424
Principal Care Management (PCM) services are health care services focused on managing a single high-risk disease. A qualified health professional will personally provide these services for the first 30 minutes each month. This could include monitoring your condition, coordinating your care, and making necessary adjustments to your treatment plan.
27 services18 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78759 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
$131.95 typical visit price
range $57.88 – $174.00
Typical copayment $32.98 (range $14.47 – $43.50)
Most-billed visit code 99204
Established Patient
$101.65 typical visit price
range $18.88 – $142.23
Typical copayment $25.41 (range $4.72 – $35.55)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Care Plan
Percentage of patients aged 65 years and older who have an advance care plan or surrogate decision maker documented in the medical record that an advance care plan was discussed but the patient did not wish or was not able to name a surrogate decision maker…
100%148 patients5/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 3

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

JESSICA LOTT FNP-BC
Nurse Practitioner (Family)
11671 JOLLYVILLE RD STE 202
AUSTIN, TX 78759
Travis County (512) 343-9848
ROVEN CHINO OLAYRES ESCANILLAS
Nurse Practitioner (Family)
11671 JOLLYVILLE RD STE 202
AUSTIN, TX 78759
Travis County (512) 566-4233
HOLLY BUCHANAN
Nurse Practitioner (Family)
11671 JOLLYVILLE RD STE 202
AUSTIN, TX 78759
Travis County (512) 343-9848

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Dustyn Williams's NPI number?

The NPI number for Dustyn Williams is 1699064766. It was assigned to this individual provider in the NPPES registry on March 29, 2011.

Where is Dustyn Williams located?

Dustyn Williams practices at 11671 Jollyville Rd Ste 202, Austin, TX 78759. The listed phone number is (512) 343-9848.

What is Dustyn Williams's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Dustyn Williams enrolled in Medicare?

Yes. Dustyn Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Dustyn Williams accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 3 other insurers list Dustyn Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Dustyn Williams was last updated on February 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.