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GEORGE GREGORY DEMOPOULOS
NPI 1942797840
Internal Medicine in Tulsa, OK

Active since April 16, 2018PECOS EnrolledAccepts Medicare Assignment
1705 E 19TH ST STE 302, TULSA, OK 74104(918) 748-7585(918) 403-6352 Get Directions Write a Review

NPPES record last updated: March 10, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Mar 10, 2026, Aug 6, 2021, Apr 16, 2018 (3 updates tracked since 2018).

About George Gregory Demopoulos NPPES

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

GEORGE GREGORY DEMOPOULOS (NPI 1942797840) is an individual internal medicine provider in Tulsa, Oklahoma, licensed in Oklahoma (6642) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS, is affiliated with Ascension St John Medical Center, and is a graduate of Michigan State University College Of Osteopathic Medicine (2018).

NPPES Registry Identity

NPI1942797840
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameGEORGE GREGORY DEMOPOULOS
Location Address1705 E 19TH ST STE 302Tulsa, OK 74104-5410
Mailing Address1705 E 19th St Ste 302Tulsa, OK 74104-5410 · (918) 748-7585 · Fax (918) 403-6352
Phone(918) 748-7585
Fax(918) 403-6352
Sole ProprietorNo
Medical School CMSMichigan State University College Of Osteopathic MedicineGraduated 2018
Enumeration DateApril 16, 2018
Last NPPES UpdateMarch 10, 20263 updates tracked since enumeration
NPPES CertifiedMarch 10, 2026
✔ NPI 1942797840 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in OK · 6642
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.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
1705 E 19TH ST STE 302, Tulsa, OK 74104
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Oklahoma, Medica.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

George Gregory Demopoulos 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 ID4789089863
PECOS Enrollment IDI20210827001282
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 7

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.

Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
206 services196 patients
Critical care, each additional 30 minutes 99292
Critical care refers to special attention given to patients facing life-threatening conditions. Each additional 30 minutes indicates the extension of this specialized care. This might include close monitoring, medication adjustments, and immediate interventions as needed.
39 services28 patients
Ultrasonic guidance for blood vessel access 76937
Ultrasonic guidance for blood vessel access is a medical procedure where sound waves are used to create images of your blood vessels. This helps doctors to accurately locate and access the vessels for treatments or tests, ensuring safety and precision.
23 services22 patients
Emergent insertion of breathing tube into windpipe using an endoscope 31500
This is a procedure where a thin tube is inserted into your windpipe to aid in breathing. It's done in emergency situations, using an endoscope, a tool with a light and camera, to ensure correct placement.
22 services22 patients
Insertion of artery tube for blood sampling or infusion through skin 36620
This procedure involves placing a small tube into an artery, usually in the wrist or elbow, to collect blood samples or administer medication. It's done under local anesthesia and is a common, safe practice.
20 services20 patients
Insertion of non-tunneled central venous tube for infusion (5 years or older) 36556
This procedure involves placing a thin tube into a large vein, usually in the neck or chest, to administer medication or fluids. It's done under local anesthesia to minimize discomfort. It's a standard, safe procedure for individuals aged 5 and above.
12 services11 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ascension St John Medical Center

Acute Care Hospitals · Tulsa, OK
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number370114
Location1923 South Utica AvenueTulsa, OK 74104 · Tulsa County
Emergency services Birthing friendly

Ascension St John Broken Arrow

Acute Care Hospitals · Broken Arrow, OK
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number370235
Location1000 West Boise CircleBroken Arrow, OK 74012 · Tulsa County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 74104 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
$123.06 typical visit price
range $53.00 – $162.61
Typical copayment $30.76 (range $13.25 – $40.65)
Most-billed visit code 99204
Established Patient
$94.27 typical visit price
range $16.68 – $132.40
Typical copayment $23.56 (range $4.17 – $33.10)
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.

Other Providers at the Same Location NPPES 20

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

JULIA MARGARET KWON DO
Internal Medicine
1705 E 19TH ST STE 302
TULSA, OK 74104
Tulsa County (918) 748-7585
MR. CALEB MCKENZIE SEVERNS
Hospitalist
1705 E 19TH ST STE 302
TULSA, OK 74104
Tulsa County (918) 748-7585
DR. PATRICK NEFF D.O.
Internal Medicine
1705 E 19TH ST STE 302
TULSA, OK 74104
Tulsa County (918) 748-7585
GARY LANE THOMAS M.D.
Internal Medicine
1705 E 19TH ST STE 302, HOLLIMAN MEDICAL BUILDING
TULSA, OK 74104
Tulsa County (918) 748-7585
EZEKIEL WANG MD
Family Medicine
1705 E 19TH ST STE 302
TULSA, OK 74104
Tulsa County (918) 748-7585
DAVID MCVAY DO
Family Medicine
1705 E 19TH ST STE 302
TULSA, OK 74104
Tulsa County (918) 748-7585
DIVYA AKULA D.O
Internal Medicine
1705 E 19TH ST STE 302
TULSA, OK 74104
Tulsa County (918) 748-7585
MRS. RACHEL VEACH ARNP
Nurse Practitioner (Gerontology)
1705 E 19TH ST STE 302
TULSA, OK 74104
Tulsa County (918) 748-7585

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 George Demopoulos's NPI number?

The NPI number for George Demopoulos is 1942797840. It was assigned to this individual provider in the NPPES registry on April 16, 2018.

Where is George Demopoulos located?

George Demopoulos practices at 1705 E 19th St Ste 302, Tulsa, OK 74104. The listed phone number is (918) 748-7585.

What is George Demopoulos's specialty?

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

Is George Demopoulos enrolled in Medicare?

Yes. George Demopoulos 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 George Demopoulos accept?

Health plans from Blue Cross and Blue Shield of Oklahoma and Medica list George Demopoulos 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.

Is George Demopoulos affiliated with any hospitals?

According to CMS data, George Demopoulos is affiliated with Ascension St John Medical Center and Ascension St John Broken Arrow.

When was this NPI record last updated?

The NPPES record for George Demopoulos was last updated on March 10, 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.