Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Thomas Sigurd Griggs, MD

Individual provider Diagnostic Radiology Physician · NPI 1891743373

Thomas Sigurd Griggs, MD is a Diagnostic Radiology in Oklahoma City, Oklahoma. Qualified in 1995, 31 years ago. Practices with Singleton Associates PA, a 795-clinician group and accepts Medicare assignment. Licensed in Oklahoma.

Years since qualifying
31
Licensed in
OK
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3600 NW 138th St Ste 102
Oklahoma City, OK 73134-2503
Phone: (405) 286-4114
Fax: (405) 463-0154
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 19576 (OK)

Record details

NPI number1891743373
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 5, 2006
Last updated in NPPESNovember 4, 2014
Mailing address3600 Nw 138th St, Suite 102, Oklahoma City, OK 73134-2503

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolOTHER
Graduated 1995 (31 years in practice)
Group practice Singleton Associates Pa — 795 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations31 on file with Medicare

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