DR. KARL NICHOLAS NAZARETH MD
NPI 1962722264
Anesthesiology in Houston, TX

Q: What is Karl Nazareth's NPI number?

The NPI number for Karl Nazareth is 1962722264. It was assigned to this individual provider in the NPPES registry on June 9, 2010.

Q: What is Karl Nazareth's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Q: When was this NPI record last updated?

The NPPES record for Karl Nazareth was last updated on October 24, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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 June 09, 2010PECOS EnrolledAccepts Medicare Assignment

93.5/100

CMS Quality Rating

1500 CITYWEST BLVD, STE. 300, HOUSTON, TX 77042(713) 620-4000(713) 458-4229 Get Directions Write a Review

NPPES record last updated: October 24, 2019. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 24, 2019, Mar 13, 2017 (2 updates tracked since 2017).

On this page

About Dr. Karl Nicholas Nazareth Md NPPES

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

DR. KARL NICHOLAS NAZARETH MD (NPI 1962722264) is an individual anesthesiology provider in Houston, Texas, licensed in Texas (Q0131) and active in the NPI registry since June 2010. He is enrolled in Medicare PECOS, is affiliated with El Campo Memorial Hospital, and is a graduate of Louisiana State University School Of Medicine In New Orleans (2010).

NPPES Registry Identity

NPI1962722264

Entity TypeIndividualMale

Primary Taxonomy207L00000X

Provider Legal NameDR. KARL NICHOLAS NAZARETHCredential: MD

Location Address1500 CITYWEST BLVD, STE. 300Houston, TX 77042

Mailing AddressPo Box 840853Dallas, TX 75284-0853 · (972) 233-1999 · Fax (972) 233-3666

Phone(713) 620-4000

Fax(713) 458-4229

Sole ProprietorNo

Medical School CMSLouisiana State University School Of Medicine In New OrleansGraduated 2010

Enumeration DateJune 9, 2010

Last NPPES UpdateOctober 24, 20192 updates tracked since enumeration

✔ NPI 1962722264 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

Licenses✔ Licensed in TX · Q0131✔ Licensed in TX · 549547

Definition

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

1500 CITYWEST BLVD, Houston, TX 77042

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Other Identifiers 3

Other8ER410TX · Bcbs

OtherP01745976TX · Rr Medicare

Medicaid340141601TX

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Oscar Insurance Company.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. Karl Nicholas Nazareth 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 ID3779704648

PECOS Enrollment IDI20141017000027

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 Reassignment

Medicare enrollment records show Karl Nazareth reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

U. S. Anesthesia Partners Of Texas, P.A.,

Same address

Anesthesiology

1500 CITYWEST BLVD, SUITE 300
Houston, TX 77042

Reassigned Medicare billing, Texas enrollment
Medicare enrollment name: U S Anesthesia Partners Of Texas, PA
3,804 clinicians in this Medicare group

NPI 1548208564 (877) 361-1809

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 of anesthetic agent and/or steroid into thigh nerve (femoral nerve) 64447

This procedure involves injecting a numbing agent and/or steroid into a nerve in your thigh. It's done to alleviate pain or inflammation. A needle will be carefully positioned near the nerve, and the medicine will be administered.

140 services133 patients

Anesthesia for procedure for total knee joint replacement 01402

Anesthesia for a total knee joint replacement numbs your body to eliminate pain during surgery. This could be general anesthesia where you're unconscious, or regional anesthesia where only the leg is numb. It's administered by a specialist, ensuring safety and comfort.

103 services100 patients

Injection of anesthetic agent and/or steroid into knee nerve branch using imaging guidance 64454

This procedure involves injecting anesthetic and/or steroid medication into a knee nerve branch. Imaging technology is used to ensure accurate placement of the needle. This can help reduce pain and inflammation in the knee area.

102 services98 patients

Ultrasonic guidance for needle placement 76942

Ultrasonic guidance for needle placement is a technique where sound waves create images that help accurately position the needle during procedures. This method ensures precision, minimizes discomfort, and increases safety.

33 services33 patients

Other procedure on nervous system 64999

A procedure on the nervous system can involve various techniques to diagnose or treat conditions affecting your brain, spinal cord, or nerves. These can include surgeries, tests, or therapies. It's done by specialized doctors to help improve your neurological health.

30 services30 patients

Anesthesia for other procedure on large bowel using an endoscope 00811

Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.

27 services27 patients

Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) 64415

This procedure involves injecting a numbing agent or steroid into your arm's nerve bundle. It's done to manage pain or inflammation. The injection helps block nerve signals that cause discomfort, providing relief. It's a safe, common procedure.

26 services26 patients

Anesthesia for extensive surgery on spine 00670

Anesthesia for extensive spine surgery involves medication to block pain and make you unconscious during the procedure. It ensures comfort and prevents movement. Two types may be used: general (you sleep) or regional (numbs a large area). The choice depends on the surgery specifics and your health.

23 services23 patients

Anesthesia for other procedure on upper abdomen 00790

Anesthesia for an upper abdomen procedure involves using medications to help you feel no pain during the operation. It can be general, where you're unconscious, or regional, where just the abdomen area is numbed. It ensures comfort and stillness, aiding a successful procedure.

23 services23 patients

Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731

This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.

22 services22 patients

Anesthesia for procedure on small and large bowel using an endoscope 00813

Anesthesia for an endoscopic procedure on the small and large bowel ensures comfort and relaxation during the procedure. It involves administering medicine to help you sleep or feel drowsy. This allows the doctor to examine your bowels without causing you discomfort or pain.

19 services19 patients

Anesthesia for other procedure or exam of knee joint using an endoscope 01400

Anesthesia for a knee joint procedure or exam using an endoscope involves administering medication to numb the area or put you in a sleep-like state. This ensures you don't feel pain during the procedure. The endoscope, a thin tube with a camera, allows the doctor to view the knee joint internally without making large incisions.

19 services19 patients

Injection of local anesthetic for abdominal wall pain control on both sides using imaging guidance 64488

This procedure involves injecting a local anesthetic into the abdominal wall to manage pain. It's carried out on both sides of the abdomen using imaging guidance for precision. This helps numb the area, providing relief from discomfort.

12 services12 patients

Anesthesia for total hip replacement 01214

Anesthesia for total hip replacement is a medical service where medication is given to eliminate pain during surgery. Two types are commonly used: general anesthesia, making you unconscious, or spinal anesthesia, numbing the lower body. The choice depends on your health and your doctor's recommendation.

11 services11 patients

Anesthesia for other procedure on top of arm bone and shoulder joint 01630

Anesthesia for a procedure on the arm bone or shoulder joint involves using medication to numb the area or make you unconscious during surgery. This ensures you feel no pain during the procedure. It's a common and safe practice in medical surgeries.

11 services11 patients

Hospital Affiliations CMS Care Compare 2

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

El Campo Memorial Hospital

Acute Care Hospitals · El Campo, TX

OwnershipVoluntary non-profit - Other

CMS Certification Number450694

Location303 Sandy Corner RdEl Campo, TX 77437 · Wharton County

Emergency services

Houston Methodist Sugarland Hospital

Acute Care Hospitals · Sugar Land, TX

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number450820

Location16655 Southwest FreewaySugar Land, TX 77479 · Fort Bend County

Emergency services Birthing friendly

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.

93.5/100

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

Scored as part of a group practice

Quality

97.15

Improvement Activities

Cost

83.57

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.

DANIELLE THERESE GEORGE CRNA

Nurse Anesthetist, Certified Registered

1500 CITYWEST BLVD, STE. 300
HOUSTON, TX 77042

Harris County (713) 620-4000

RODRIQUE DEWYANE NELSON CRNA

Nurse Anesthetist, Certified Registered

1500 CITYWEST BLVD, STE. 300
HOUSTON, TX 77042

Harris County (713) 620-4000

PEDRO NAPOLES CRNA

Nurse Anesthetist, Certified Registered

1500 CITYWEST BLVD, SUITE 300
HOUSTON, TX 77042

Harris County (972) 715-5000

GEORGE LOUIS HERLIN MD

Anesthesiology

1500 CITYWEST BLVD, STE. 300
HOUSTON, TX 77042

Harris County (713) 620-4000

GREGORY RONALD CURFMAN

Nurse Anesthetist, Certified Registered

1500 CITYWEST BLVD, STE. 300
HOUSTON, TX 77042

Harris County (713) 620-4000

JENNIFER TERRASAS CRNA

Nurse Anesthetist, Certified Registered

1500 CITYWEST BLVD, STE. 300
HOUSTON, TX 77042

Harris County (713) 620-4000

DR. DON ELDON CHERRY M.D.

Anesthesiology

1500 CITYWEST BLVD, STE. 300
HOUSTON, TX 77042

Harris County (713) 620-4000

IGNATIUS PAUL DISTEFANO

Anesthesiology

1500 CITYWEST BLVD, STE. 300
HOUSTON, TX 77042

Harris County (713) 620-4000

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 Karl Nazareth's NPI number?

The NPI number for Karl Nazareth is 1962722264. It was assigned to this individual provider in the NPPES registry on June 9, 2010.

Where is Karl Nazareth located?

Karl Nazareth practices at 1500 Citywest Blvd Ste. 300, Houston, TX 77042. The listed phone number is (713) 620-4000.

What is Karl Nazareth's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Karl Nazareth enrolled in Medicare?

Yes. Karl Nazareth 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 organization bills Medicare for Karl Nazareth's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karl Nazareth reassigns Medicare benefits to U. S. Anesthesia Partners Of Texas, P.A., (Houston, TX). The 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 Karl Nazareth's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Karl Nazareth accept?

Health plans from Blue Cross and Blue Shield of Texas and Oscar Insurance Company list Karl Nazareth 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 Karl Nazareth affiliated with any hospitals?

According to CMS data, Karl Nazareth is affiliated with El Campo Memorial Hospital and Houston Methodist Sugarland Hospital.

When was this NPI record last updated?

The NPPES record for Karl Nazareth was last updated on October 24, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.