DOUGLAS B KLIEWER M. D.
NPI 1174518906
Internal Medicine - Gastroenterology in Tulsa, OK

Q: What is Douglas Kliewer's NPI number?

The NPI number for Douglas Kliewer is 1174518906. It was assigned to this individual provider in the NPPES registry on September 19, 2005.

Q: What is Douglas Kliewer's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Douglas Kliewer was last updated on March 29, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.

Active since September 19, 2005PECOS EnrolledAccepts Medicare Assignment

85.83/100

CMS Quality Rating

6465 S YALE AVE, SUITE 1002, TULSA, OK 74136(918) 481-4706(918) 481-4765 Get Directions Write a Review

NPPES record last updated: March 29, 2016. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Douglas B Kliewer M. D. NPPES

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

DOUGLAS B KLIEWER M. D. (NPI 1174518906) is an individual gastroenterology provider in Tulsa, Oklahoma, licensed in Oklahoma (20114) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS, is affiliated with Saint Francis Hospital, Inc, and is a graduate of University Of Oklahoma College Of Medicine (1994).

NPPES Registry Identity

NPI1174518906

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDOUGLAS B KLIEWERCredential: M. D.

Location Address6465 S YALE AVE, SUITE 1002Tulsa, OK 74136-7812

Mailing AddressPo Box 305Lowell, AR 72745-0305 · (918) 481-4706 · Fax (918) 481-4765

Phone(918) 481-4706

Fax(918) 481-4765

Sole ProprietorNo

Medical School CMSUniversity Of Oklahoma College Of MedicineGraduated 1994

Enumeration DateSeptember 19, 2005

Last NPPES UpdateMarch 29, 2016

✔ NPI 1174518906 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in OK · 20114

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

6465 S YALE AVE, Tulsa, OK 74136

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Other Identifiers 2

Medicaid100130180AOK

Medicare UPING50151OK

Accepted Insurance

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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Douglas B Kliewer M. D. 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 ID9335127257

PECOS Enrollment IDI20100927000055, I20230308000063

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.

Medicare Billing Reassignments

Medicare enrollment records show Douglas Kliewer reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Adult Gastroenterology Associates Inc

1.6 mi

Gastroenterology

4200 E SKELLY DR STE 700
Tulsa, OK 74135

Reassigned Medicare billing, Oklahoma enrollment
18 clinicians in this Medicare group

NPI 1306884812 (918) 438-7050

Cherokee Nation

24 mi

Multi-Specialty

101 S MOORE AVE
Claremore, OK 74017

Reassigned Medicare billing, Texas enrollment
1,047 clinicians in this Medicare group

NPI 1497568968 (539) 234-1000

Creek Nation Hospital & Clinics

37 mi

Clinic/Center

2900 N MAIN ST
Muskogee, OK 74401

Reassigned Medicare billing, Texas enrollment
655 clinicians in this Medicare group

NPI 1922873611 (918) 346-7833

Stillwater Medical Center Authority

65 mi

General Acute Care Hospital

1323 W 6TH AVE
Stillwater, OK 74074

Reassigned Medicare billing, Oklahoma enrollment
147 clinicians in this Medicare group

NPI 1164494027 (405) 372-1480

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

Areas of Expertise CMS Part B claims 15

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.

Injection, vedolizumab, intravenous, 1 mg J3380

Vedolizumab is a medication given via injection. It's used to treat certain bowel conditions (such as Crohn's disease, ulcerative colitis) by reducing inflammation. It works by blocking a certain protein that causes this inflammation.

4,800 services15 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

131 services130 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

116 services84 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

87 services85 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

84 services84 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

41 services40 patients

Colorectal cancer screening; colonoscopy on individual at high risk G0105

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

35 services34 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

33 services33 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

29 services27 patients

Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm 43249

This procedure involves using a flexible tube with a camera, called an endoscope, to gently expand narrowed areas in your esophagus, stomach, or upper small bowel. A small balloon is inflated, making it easier for food and liquid to pass through. It's safe and effective.

23 services22 patients

Diagnostic exam of large bowel using a flexible endoscope 45378

This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.

20 services20 patients

Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 96365

This is a procedure where a medical professional inserts a small tube into your vein to deliver medication, nutrients, or fluids directly into your bloodstream. This can be for treatment, prevention, or diagnosis. The process typically takes less than an hour.

16 services15 patients

Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235

This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.

15 services15 patients

Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk G0121

Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.

15 services15 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

12 services12 patients

Hospital Affiliations CMS Care Compare 2

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

Saint Francis Hospital, Inc

Acute Care Hospitals · Tulsa, OK

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number370091

Location6161 South YaleTulsa, OK 74136 · Tulsa County

Emergency services Birthing friendly

Saint Francis Hospital South, LLC

Acute Care Hospitals · Tulsa, OK

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number370218

Location10501 East 91st Street SouthTulsa, OK 74133 · Tulsa County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 74136 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

85.83/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

90.74

Promoting Interoperability

100

Improvement Activities

Cost

51.95

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.

MARSHA K. HOWERTON, MD, PC

Obstetrics & Gynecology (Obstetrics)

6465 S YALE AVE, SUITE 310
TULSA, OK 74136

Tulsa County (918) 481-2941

MARY C KIRK MD, PLLC

Obstetrics & Gynecology

6465 S YALE AVE, SUITE 310
TULSA, OK 74136

Tulsa County (918) 236-3000

RHONDA BADEEN LUNN, M.D., INC.

Obstetrics & Gynecology

6465 S YALE AVE, SUITE 815
TULSA, OK 74136

Tulsa County (918) 481-2941

SHELLEY CAPEHART MD

Colon & Rectal Surgery

6465 S YALE AVE, SUITE 900
TULSA, OK 74136

Tulsa County (918) 481-4800

FRANZ MONCADA MD INC

Pediatrics

6465 S YALE AVE
TULSA, OK 74136

Tulsa County (918) 481-4880

DR. MEGHAN CHRIS SHAIEBLY O.D.

Optometrist

6465 S YALE AVE, SUITE 215
TULSA, OK 74136

Tulsa County (918) 492-8455

MARK STEVEN SCHWARTZ D.O.

Orthopaedic Surgery (Pediatric Orthopaedic Surgery)

6465 S YALE AVE, SUITE 420
TULSA, OK 74136

Tulsa County (918) 502-8810

OSTEOPATHIC PHYSICIANS OF TULSA, INC

Internal Medicine (Nephrology)

6465 S YALE AVE, STE 401
TULSA, OK 74136

Tulsa County (918) 582-1354

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 Douglas Kliewer's NPI number?

The NPI number for Douglas Kliewer is 1174518906. It was assigned to this individual provider in the NPPES registry on September 19, 2005.

Where is Douglas Kliewer located?

Douglas Kliewer practices at 6465 S Yale Ave Suite 1002, Tulsa, OK 74136. The listed phone number is (918) 481-4706.

What is Douglas Kliewer's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Douglas Kliewer enrolled in Medicare?

Yes. Douglas Kliewer 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.

Which organizations bill Medicare for Douglas Kliewer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Douglas Kliewer reassigns Medicare benefits to 4 organizations: Adult Gastroenterology Associates Inc (Tulsa, OK), Cherokee Nation (Claremore, OK), Creek Nation Hospital & Clinics (Muskogee, OK) and Stillwater Medical Center Authority (Stillwater, OK). Each 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 Douglas Kliewer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Douglas Kliewer accept?

Health plans from Blue Cross and Blue Shield of Oklahoma and Mending Health list Douglas Kliewer 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 Douglas Kliewer affiliated with any hospitals?

According to CMS data, Douglas Kliewer is affiliated with Saint Francis Hospital, Inc and Saint Francis Hospital South, LLC.

When was this NPI record last updated?

The NPPES record for Douglas Kliewer was last updated on March 29, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.