DR. KRISTOFER M CHARLTON-OUW MD
NPI 1104995828
Surgery - Vascular Surgery in Houston, TX

Q: What is Kristofer Charlton-ouw's NPI number?

The NPI number for Kristofer Charlton-ouw is 1104995828. It was assigned to this individual provider in the NPPES registry on November 7, 2006.

Q: What is Kristofer Charlton-ouw's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Vascular Surgery, with taxonomy code 2086S0129X.

Active since November 07, 2006PECOS EnrolledAccepts Medicare Assignment

100/100

CMS Quality Rating

1200 BINZ ST STE 1300, HOUSTON, TX 77004(713) 942-2500(713) 942-2536 Get Directions Write a Review

NPPES record last updated: January 28, 2022. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jan 28, 2022, Oct 2, 2021 (2 updates tracked since 2021).

On this page

About Dr. Kristofer M Charlton-ouw Md NPPES

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

DR. KRISTOFER M CHARLTON-OUW MD (NPI 1104995828) is an individual vascular surgery provider in Houston, Texas, licensed in Texas (M7907) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, is affiliated with Hca Houston Healthcare Medical Center, and is a graduate of Harvard Medical School (2002).

NPPES Registry Identity

NPI1104995828

Entity TypeIndividualMale

Primary Taxonomy2086S0129X

Provider Legal NameDR. KRISTOFER M CHARLTON-OUWCredential: MD

Location Address1200 BINZ ST STE 1300Houston, TX 77004-6999

Mailing Address1200 Binz St Ste 1300Houston, TX 77004-6999 · (713) 942-2500 · Fax (713) 942-2536

Phone(713) 942-2500

Fax(713) 942-2536

Sole ProprietorNo

Medical School CMSHarvard Medical SchoolGraduated 2002

Enumeration DateNovember 7, 2006

Last NPPES UpdateJanuary 28, 20222 updates tracked since enumeration

NPPES CertifiedSeptember 13, 2021

✔ NPI 1104995828 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgery · Vascular SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code2086S0129X

License✔ Licensed in TX · M7907

Definition

A surgeon with expertise in the management of surgical disorders of the blood vessels, excluding the intracranial vessels or the heart.

Also ListedSurgeryTaxonomy 208600000X · License M7907 (TX)

1200 BINZ ST STE 1300, Houston, TX 77004

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Other Identifiers 1

Medicaid193793005TX

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.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

Dr. Kristofer M Charlton-ouw Md 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 ID9436229903

PECOS Enrollment IDI20080610000626

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 Kristofer Charlton-ouw reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Specialty Associates Of West Houston PLLC

Same address

Internal Medicine

1200 BINZ ST STE 1350
Houston, TX 77004

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

NPI 1699062349 (832) 924-8788

Ut Physicians

0.9 mi

Anesthesiology

6410 FANNIN ST, 1500
Houston, TX 77030

Reassigned Medicare billing, Texas enrollment
3,111 clinicians in this Medicare group

NPI 1033157821 (832) 325-7325

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 17

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.

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.

144 services93 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

135 services48 patients

Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221

Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.

61 services56 patients

Ultrasound study of arm and leg arteries 93922

An ultrasound study of arm and leg arteries is a non-invasive procedure that uses sound waves to create images of your arteries. It helps in checking blood flow, identifying blockages, or detecting other abnormalities in your arteries.

48 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.

48 services41 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.

45 services39 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

39 services19 patients

Ultrasound of one leg arteries or artery grafts 93926

An ultrasound of leg arteries or artery grafts is a non-invasive test using sound waves to create images of your blood vessels. This helps doctors assess blood flow, identify blockages, and monitor the health of grafts.

38 services26 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.

36 services36 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

31 services28 patients

Ultrasound study of one arm or leg veins with compression and maneuvers 93971

This is a non-invasive procedure using sound waves to visualize veins in an arm or leg. It involves applying gentle pressure and performing certain movements. It helps identify any abnormal blood flow or clots, ensuring vascular health.

29 services25 patients

Ultrasound of both sides of head and neck blood flow 93880

An ultrasound of the head and neck blood flow is a safe, non-invasive procedure that uses sound waves to create images of blood vessels. It helps detect abnormalities like blockages or clots, ensuring optimal blood flow.

21 services19 patients

Ultrasound of hemodialysis access 93990

An ultrasound of hemodialysis access is a non-invasive procedure that uses sound waves to create images of your dialysis access site. It helps monitor the access site's health and detect any potential issues like blockages or narrowing.

19 services12 patients

Insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist 36902

This procedure involves inserting a needle or tube into your hemodialysis circuit, a system that cleans your blood when your kidneys can't. A balloon is then used to widen a narrow section of this circuit. A radiologist reviews the procedure to ensure accuracy.

14 services11 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

13 services12 patients

Insertion of tunneled central venous tube for infusion (5 years or older) 36558

The insertion of a tunneled central venous tube is a procedure where a thin, flexible tube is placed into a large vein, usually in the neck or chest. This tube allows healthcare providers to give medications, fluids, or nutrients directly into your bloodstream over a longer period.

12 services11 patients

Complete ultrasound study of arm and leg arteries 93923

This procedure involves using sound waves to produce images of your arm and leg arteries. It helps identify blockages or abnormalities that could lead to conditions like stroke or peripheral artery disease. It's non-invasive and painless.

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.

Hca Houston Healthcare Medical Center

Acute Care Hospitals · Houston, TX

4/5 CMS rating

OwnershipProprietary

CMS Certification Number450659

Location1313 Hermann DrHouston, TX 77004 · Harris County

Emergency services

Hca Houston Healthcare Pearland

Acute Care Hospitals · Pearland, TX

3/5 CMS rating

OwnershipProprietary

CMS Certification Number670106

Location11100 Shadow Creek ParkwayPearland, TX 77584 · Brazoria County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77004 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

$90.40 typical visit price

range $58.24 – $176.98

Typical copayment $22.60 (range $14.56 – $44.24)

Most-billed visit code 99203

Established Patient

$72.62 typical visit price

range $18.60 – $143.93

Typical copayment $18.15 (range $4.65 – $35.98)

Most-billed visit code 99213

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.

100/100

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

Individually scored

Promoting Interoperability

100

Improvement Activities

Reported Quality Measures

e-Prescribing

90%89 patients1/55-star benchmark: 100%

Provide Patients Electronic Access to Their Health Information

100%284 patients5/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES

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

KRISTEN LE

Nurse Practitioner (Acute Care)

1200 BINZ ST STE 1300
HOUSTON, TX 77004

Harris County (713) 942-2500

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 Kristofer Charlton-ouw's NPI number?

The NPI number for Kristofer Charlton-ouw is 1104995828. It was assigned to this individual provider in the NPPES registry on November 7, 2006.

Where is Kristofer Charlton-ouw located?

Kristofer Charlton-ouw practices at 1200 Binz St Ste 1300, Houston, TX 77004. The listed phone number is (713) 942-2500.

What is Kristofer Charlton-ouw's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Vascular Surgery, with taxonomy code 2086S0129X.

Is Kristofer Charlton-ouw enrolled in Medicare?

Yes. Kristofer Charlton-ouw 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 Kristofer Charlton-ouw's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kristofer Charlton-ouw reassigns Medicare benefits to 2 organizations: Specialty Associates Of West Houston PLLC (Houston, TX) and Ut Physicians (Houston, TX). 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 Kristofer Charlton-ouw's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Kristofer Charlton-ouw accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 4 other insurers list Kristofer Charlton-ouw 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 Kristofer Charlton-ouw affiliated with any hospitals?

According to CMS data, Kristofer Charlton-ouw is affiliated with Hca Houston Healthcare Medical Center and Hca Houston Healthcare Pearland.

When was this NPI record last updated?

The NPPES record for Kristofer Charlton-ouw was last updated on January 28, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.