Active NPI 1083603724 Individual Practitioner Female Practitioner

Dr. Viswanathan Aiyer , MD

Anesthesiology • Houston, TX

✓ Accepts Medicare Assignment

Public Directory Information & Medical Disclaimer

This profile is compiled from official public domain records provided by CMS and the NPPES registry. TRUE-MEDINFO is an independent reference directory and does not provide medical advice, diagnosis, or treatment recommendations. Always consult a licensed medical professional for personal health decisions.

Professional Overview & Biography Verified Profile Summary

Dr. Viswanathan Aiyer, MD is a registered Anesthesiology practitioner in Houston, TX. With approximately 29 years of clinical practice since graduating from University Of Texas Southwestern Medical School At Dallas in 1997, Dr. Aiyer provides healthcare services at the registered practice location at 1500 CITYWEST BLVD STE 300.

Dr. Aiyer is affiliated with U S Anesthesia Partners Of Texas, Pa and accepts Medicare assignment.

Frequently performed procedures and clinical services include anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope, anesthesia for procedure on small and large bowel using an endoscope, anesthesia for procedure on large bowel using an endoscope. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

1500 Citywest Blvd Ste 300

Houston, TX 77042

Telephone 7136204000

Associated Practice Facility / Clinic

🏢 North Cypress Anesthesiology Associates Facility NPI 1184810111

Medicare Profile & Education

Medical School

University Of Texas Southwestern Medical School At Dallas

Graduation Year

1997

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Anesthesiology in Houston, TX

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

29 Yrs +7.4 yrs vs City Avg

City Avg: 21.6 Yrs

State Avg: 24.9 Yrs

Regional Practice Density

1164 Specialists

Practicing in Houston, TX (4818 Statewide)

Telehealth Adoption Rate

1.1% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

93.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Aiyer (29 Years) 29 Yrs

Houston Specialty Average (21.6 Years) 21.6 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	38	37	$1699.93	$110.80
00813 Anesthesia for procedure on small and large bowel using an endoscope	31	31	$1894.35	$127.43
00811 Anesthesia for procedure on large bowel using an endoscope	31	31	$1561.79	$104.49
00142 Anesthesia for lens surgery	26	25	$1887.23	$125.36
00812 Anesthesia for exam of colon using an endoscope	11	11	$1423.64	$74.78

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	41	41	$2100.73	$137.05
00811 Anesthesia for procedure on large bowel using an endoscope	29	29	$1858.50	$124.23
00813 Anesthesia for procedure on small and large bowel using an endoscope	26	26	$2183.37	$155.69
00142 Anesthesia for lens surgery	25	25	$1962.72	$136.13

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	22	22	$1067.00	$31.86
64447 Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve)	12	12	$1666.00	$47.63

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	29	29	$1067.00	$31.38
64447 Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve)	15	15	$1666.00	$49.67
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	13	13	$1676.42	$111.69
01810 Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand	13	12	$1104.23	$79.13

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	50	50	$1067.00	$33.21
64447 Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve)	23	23	$1666.00	$48.92
64415 Injection of anesthetic agent, brachial (arm) nerve bundle	18	18	$1904.00	$67.40
01402 Anesthesia for procedure for total knee joint replacement	18	18	$2298.25	$190.53
99231 Follow-up hospital inpatient care per day, typically 15 minutes	14	14	$299.10	$40.79
00142 Anesthesia for lens surgery	14	13	$1752.43	$123.62
01936 Anesthesia for X-ray procedure (accessed through the skin) on spine and spinal cord	14	14	$1332.96	$102.57
01992 Anesthesia for nerve block and injection procedure, prone position	14	14	$1099.93	$81.21
01214 Anesthesia for total hip replacement	12	12	$2968.88	$241.13
01638 Anesthesia for open or endoscopic total shoulder joint replacement	11	11	$3001.50	$228.04

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	37	33	$299.10	$40.02
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	27	27	$1067.00	$32.86
01936 Anesthesia for X-ray procedure (accessed through the skin) on spine and spinal cord	26	26	$1144.59	$86.83
01402 Anesthesia for procedure for total knee joint replacement	25	25	$2619.12	$203.14
00142 Anesthesia for lens surgery	24	22	$1727.25	$125.86
01992 Anesthesia for nerve block and injection procedure, prone position	23	21	$1117.96	$83.58
64415 Injection of anesthetic agent, brachial (arm) nerve bundle	13	13	$1904.00	$67.37

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	47	46	$1067.00	$33.09
64447 Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve)	36	36	$1666.00	$63.81
99231 Follow-up hospital inpatient care per day, typically 15 minutes	29	23	$293.06	$39.88
01936 Anesthesia for X-ray procedure (accessed through the skin) on spine and spinal cord	28	26	$1448.14	$112.22
01992 Anesthesia for nerve block and injection procedure, prone position	25	23	$1274.72	$96.44
01402 Anesthesia for procedure for total knee joint replacement	19	19	$2695.37	$211.93

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	34	34	$920.00	$32.97
64447 Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve)	33	33	$1490.73	$62.86
01402 Anesthesia for procedure for total knee joint replacement	17	17	$2568.76	$201.03
01992 Anesthesia for nerve block and injection procedure, prone position	14	14	$1070.00	$72.97

Medical Specialties & State Licenses

Anesthesiology Primary Specialty

NUCC Taxonomy Code: 207L00000X

State License TX L7956

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.

Hospital & Practice Group Affiliations

U S Anesthesia Partners Of Texas, Pa

5420 W Loop S, Bellaire, TX 774012121

Phone: 7136642662

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

40 Associated Practitioners

Dr. Nicholas Defilippis , MD

Anesthesiology

NPI 1003010661

Doctor of Medicine (M.D.)

Editha Flemming , CRNA

Nurse Anesthetist, Certified Registered

NPI 1003086315

Certified Registered Nurse Anesthetist

Danielle George , CRNA

Nurse Anesthetist, Certified Registered

NPI 1003121963

Certified Registered Nurse Anesthetist

James Trahan , AA

Anesthesiologist Assistant

NPI 1003173485

Rodrique Nelson , CRNA

Nurse Anesthetist, Certified Registered

NPI 1003187600

Certified Registered Nurse Anesthetist

Alyssa Estill , CRNA

Nurse Anesthetist, Certified Registered

NPI 1003306903

Certified Registered Nurse Anesthetist

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

8 Historical Events

📍

Updated Practice Location June 05, 2018

Registered at 1500 CITYWEST BLVD STE 300, HOUSTON, TX 77042 (Tel: 7136204000)

📍

Updated Business Mailing Address June 05, 2018

Registered at PO BOX 840853, DALLAS, TX 752840853 (Tel: 7136204000)

✅

NPI Profile Active October 23, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location October 23, 2007

Registered at 1315 ST JOSEPH PKWY, # 302, HOUSTON, TX 770028233 (Tel: 7136593284)

📍

Updated Business Mailing Address October 23, 2007

Registered at 804 SCOTT NIXON MEMORIAL DR, AUGUSTA, GA 309072464 (Tel: 7136593284)

👤

Provider Name / Credentials Updated October 23, 2007

Recorded as VISWANATHAN AIYER, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) October 23, 2007

Anesthesiology (License #L7956 in TX)

🟢

Initial NPI Registration & Enumeration October 16, 2005

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

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NPI Administrative Meta

NPI Number: 1083603724

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: October 16, 2005

Last Update: June 05, 2018

Sole Proprietor: No

Update or Correct Profile

Mailing Address

Po Box 840853

Dallas, TX 752840853

Phone: 7136204000

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.