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WILLIAM R GRUBB MD INC
NPI 1447551122
Internal Medicine in Tulsa, OK

Active since November 11, 2010
1705 E 19TH ST, 400, TULSA, OK 74104(918) 742-7331(918) 742-7332 Get Directions Write a Review

NPPES record last updated: May 14, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About William R Grubb Md Inc NPPES

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

WILLIAM R GRUBB MD INC (NPI 1447551122) is a healthcare organization registered as an internal medicine in Tulsa, Oklahoma and active in the NPI registry since November 2010. The organization lists William R Grubb, Owner, as its authorized official.

NPPES Registry Identity

NPI1447551122
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameWILLIAM R GRUBB MD INC
Location Address1705 E 19TH ST, 400Tulsa, OK 74104-5405
Mailing Address1705 E 19th St, 400Tulsa, OK 74104-5405 · (918) 742-7331 · Fax (918) 742-7332
Phone(918) 742-7331
Fax(918) 742-7332
Organization SubpartNo
Authorized OfficialWilliam R GrubbOwner · (918) 756-7110
Enumeration DateNovember 11, 2010
Last NPPES UpdateMay 14, 2013
✔ NPI 1447551122 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 · 10720
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.
1705 E 19TH ST, Tulsa, OK 74104
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Other Identifiers 2

Medicaid100100630AOK
Medicare UPIND39154OK

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)

William R Grubb Md Inc 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 William R Grubb MD Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

William Grubb, MD
Internal Medicine
NPI 1164582375
1919 S WHEELING AVE STE 710
Tulsa, OK 74104
(918) 756-7110
✔ PECOS✔ Accepts Medicare0.2 mi

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 William R Grubb MD Inc's NPI number?

The NPI number for William R Grubb MD Inc is 1447551122. It was assigned to this organization in the NPPES registry on November 11, 2010.

Where is William R Grubb MD Inc located?

William R Grubb MD Inc is located at 1705 E 19th St 400, Tulsa, OK 74104. The listed phone number is (918) 742-7331.

What is William R Grubb MD Inc's specialty?

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

Is William R Grubb MD Inc enrolled in Medicare?

Yes. William R Grubb MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through William R Grubb MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to William R Grubb MD Inc. 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 William R Grubb MD Inc was last updated on May 14, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.