Mark Williams, MD

Mark Williams, MD holds NPI 1659461564, with a primary taxonomy of pulmonary disease physician and a practice location in Indianapolis, IN. The number was issued on October 13, 2006 and the NPPES record was last updated on March 15, 2025. One additional practice location is listed.

Taxonomies and licenses

Practice locations

Local context

Active NPPES records list 130 providers with pulmonary disease physician as the primary taxonomy within 25 miles of this practice location's ZIP code, 78 of them within 10 miles.

The same primary taxonomy is listed by 344 in Indiana and 19,854 nationwide.

These are counts from NPPES records, not a ranking or recommendation. Distances are measured between ZIP code centers, not street addresses.

Other providers at this address

• Helen Bernie, DO., MPH (Urology Physician)
• Ronald Mastouri, MD (Cardiovascular Disease Physician)
• Tomas Meijome, MD (Ophthalmology Physician)

Providers whose NPPES practice location has the same street address, listing those with a page here.

Nearby providers with the same primary taxonomy

• Anishka Kappalayil, MD , Indianapolis, IN, same ZIP code
• Brent Bagley, MD , Indianapolis, IN, same ZIP code
• Caitlin Baxter, MD , Indianapolis, IN, same ZIP code
• Catherine Sears, MD , Indianapolis, IN, same ZIP code
• Clare Prohaska, M.D. , Indianapolis, IN, same ZIP code
• Cory Powers, MD , Indianapolis, IN, same ZIP code
• Cynthia Brown, MD , Indianapolis, IN, same ZIP code
• Farzad Loghmani, MD , Indianapolis, IN, same ZIP code

Record history

Name on record

Dr. Mark D Williams

Status

Active

NPI issued

October 13, 2006

Last updated in NPPES

March 15, 2025

Is this your record? Updates are made through NPPES, the official National Plan and Provider Enumeration System.

NPPES data as of September 13, 2026 · Source: CMS NPPES

curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://api.npilayer.com/v1/providers/1659461564"