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ASSOCIATES OF MEDICINE/JOHN D WILLIAMS,MD,PLLC
NPI 1770733917
Internal Medicine in Stillwater, OK

Active since September 24, 2008
608 S HESTER ST, STILLWATER, OK 74074(405) 377-8000(405) 377-8040 Get Directions Write a Review

NPPES record last updated: September 24, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Associates Of Medicine/john D Williams,md,pllc NPPES

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

ASSOCIATES OF MEDICINE/JOHN D WILLIAMS,MD,PLLC (NPI 1770733917) is a healthcare organization registered as an internal medicine in Stillwater, Oklahoma and active in the NPI registry since September 2008. The organization lists John David Williams, Owner, as its authorized official.

NPPES Registry Identity

NPI1770733917
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameASSOCIATES OF MEDICINE/JOHN D WILLIAMS,MD,PLLC
Location Address608 S HESTER STStillwater, OK 74074-4516
Mailing Address608 S Hester StStillwater, OK 74074-4516 · (405) 377-8000 · Fax (405) 377-8040
Phone(405) 377-8000
Fax(405) 377-8040
Organization SubpartNo
Authorized OfficialJohn David WilliamsOwner · (405) 377-8000
Enumeration DateSeptember 24, 2008
✔ NPI 1770733917 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in OK · 13127
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
608 S HESTER ST, Stillwater, OK 74074
Open in Google Maps ↗

Other Identifiers 1

Medicare UPIND88947OK

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Associates Of Medicine/john D Williams,md,pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Associates Of Medicine/John D Williams,md,pllc, which bills Medicare for the services this clinician delivers.

Clinician (1)

John Williams, M.D.
Internal Medicine
NPI 1528068426
608 S HESTER ST
Stillwater, OK 74074
(405) 377-8000
✔ PECOS✔ Accepts MedicareSame address

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

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 Associates Of Medicine/John D Williams,md,pllc's NPI number?

The NPI number for Associates Of Medicine/John D Williams,md,pllc is 1770733917. It was assigned to this organization in the NPPES registry on September 24, 2008.

Where is Associates Of Medicine/John D Williams,md,pllc located?

Associates Of Medicine/John D Williams,md,pllc is located at 608 S Hester St, Stillwater, OK 74074. The listed phone number is (405) 377-8000.

What is Associates Of Medicine/John D Williams,md,pllc's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Associates Of Medicine/John D Williams,md,pllc enrolled in Medicare?

Yes. Associates Of Medicine/John D Williams,md,pllc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Associates Of Medicine/John D Williams,md,pllc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Associates Of Medicine/John D Williams,md,pllc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Associates Of Medicine/John D Williams,md,pllc was last updated on September 24, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.