SRIRAM S NATHAN M.D.
NPI 1285602607
Internal Medicine - Advanced Heart Failure and Transplant Cardiology in Houston, TX

Q: What is Sriram Nathan's NPI number?

The NPI number for Sriram Nathan is 1285602607. It was assigned to this individual provider in the NPPES registry on March 10, 2006.

Q: What is Sriram Nathan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Advanced Heart Failure and Transplant Cardiology, with taxonomy code 207RA0001X.

Q: When was this NPI record last updated?

The NPPES record for Sriram Nathan was last updated on January 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.

Active since March 10, 2006PECOS EnrolledAccepts Medicare Assignment

82.38/100

CMS Quality Rating

6400 FANNIN ST, SUITE 2500, HOUSTON, TX 77030(713) 704-4300(713) 704-4355 Get Directions Write a Review

NPPES record last updated: January 8, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About Sriram S Nathan M.d. NPPES

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

SRIRAM S NATHAN M.D. (NPI 1285602607) is an individual advanced heart failure and transplant cardiology provider in Houston, Texas, licensed in Texas (N5279) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Memorial Hermann - Texas Medical Center, and is a graduate of Other (1991).

NPPES Registry Identity

NPI1285602607

Entity TypeIndividualMale

Primary Taxonomy207RA0001X

Provider Legal NameSRIRAM S NATHANCredential: M.D.

Location Address6400 FANNIN ST, SUITE 2500Houston, TX 77030-1521

Mailing Address6400 Fannin St, Suite 2350Houston, TX 77030-1521 · (713) 704-4300 · Fax (713) 704-4355

Phone(713) 704-4300

Fax(713) 704-4355

Sole ProprietorNo

Medical School CMSOtherGraduated 1991

Enumeration DateMarch 10, 2006

Last NPPES UpdateJanuary 8, 2025

NPPES CertifiedJanuary 8, 2025

✔ NPI 1285602607 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Advanced Heart Failure and Transplant CardiologyAllopathic & Osteopathic Physicians

Taxonomy Code207RA0001X

License✔ Licensed in TX · N5279

Definition

Specialists in Advanced Heart Failure and Transplant Cardiology would participate in the inpatient and outpatient management of patients with advanced heart failure across the spectrum from consideration for high-risk cardiac surgery, cardiac transplantation, or mechanical circulatory support, to pre-and post-operative evaluation and management of patients with cardiac transplants and mechanical support devices, and end-of-life care for patients with end-stage heart failure.

Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License N5279 (TX)

6400 FANNIN ST, Houston, TX 77030

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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, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Sriram S Nathan 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 ID5799874590

PECOS Enrollment IDI20100429000903

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 13

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.

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.

500 services114 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.

180 services75 patients

Evaluation of lower heart chamber assist device 93750

An evaluation of a lower heart chamber assist device is a procedure to check the function of an implanted device aiding your heart's lower chambers. This helps ensure optimal heart function by monitoring the device's performance and your heart's response to it.

112 services31 patients

Evaluation of lower heart chamber assist device 93750

102 services20 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.

43 services37 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

42 services36 patients

Hospital discharge day management, 30 minutes or less 99238

Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.

32 services31 patients

Ultrasound of heart with probe in esophagus, with report 93312

This procedure, called a transesophageal echocardiogram, uses a small probe passed into your esophagus to capture detailed images of your heart. The report provides information about your heart's structure and function.

26 services25 patients

Ultrasound of heart blood flow, valves and chambers 93320

An ultrasound of your heart, also known as an echocardiogram, is a test that uses sound waves to create detailed images of your heart. It helps doctors check the health of your heart's chambers, valves, and blood flow.

26 services25 patients

Ultrasound of heart with color-depicted blood flow, rate and valve function 93325

An ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.

21 services20 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.

21 services18 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

15 services15 patients

Insertion of tube in right heart chambers for measurement 93451

This procedure involves placing a small, flexible tube into the right side of your heart. It helps assess how your heart is functioning by measuring pressures within the heart chambers. It's a key tool in diagnosing certain heart conditions.

11 services11 patients

Hospital Affiliations CMS Care Compare 4

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

Memorial Hermann - Texas Medical Center

Acute Care Hospitals · Houston, TX

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number450068

Location6411 FanninHouston, TX 77030 · Harris County

Emergency services Birthing friendly

De Tar Hospital Navarro

Acute Care Hospitals · Victoria, TX

4/5 CMS rating

OwnershipProprietary

CMS Certification Number450147

Location506 E San Antonio StVictoria, TX 77901 · Victoria County

Emergency services Birthing friendly

Memorial Hermann Hospital System

Acute Care Hospitals · Houston, TX

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number450184

Location1635 North Loop WestHouston, TX 77008 · Harris County

Emergency services Birthing friendly

Memorial Hermann Northeast Hospital

Acute Care Hospitals · Humble, TX

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number450684

Location18951 Memorial NorthHumble, TX 77338 · Harris County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77030 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

$134.06 typical visit price

range $58.24 – $176.98

Typical copayment $33.51 (range $14.56 – $44.24)

Most-billed visit code 99204

Established Patient

$102.71 typical visit price

range $18.60 – $143.93

Typical copayment $25.67 (range $4.65 – $35.98)

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.

82.38/100

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

Scored as part of a group practice

Quality

79.23

Promoting Interoperability

100

Improvement Activities

Cost

58.5

Referred Medical Equipment & Supplies CMS DME claims 9

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Supplies for maintenance of non-insulin drug infusion catheter, per week (list drugs separately) A4221

DME-Other DME · category DE017N

2 suppliers18 claims18 services$12.92 avg. paid by Medicare

Infusion supplies for external drug infusion pump, per cassette or bag (list drugs separately) A4222

DME-Medical/Surgical Supplies · category DA000N

2 suppliers26 claims104 services$15.47 avg. paid by Medicare

Injection, milrinone lactate, 5 mg J2260

Treatment-Injections and Infusions (nononcologic) · category RI026N

2 suppliers22 claims1,358 services$0.87 avg. paid by Medicare

Tacrolimus, immediate release, oral, 1 mg J7507

Treatment-Treatment - Miscellaneous · category RX029N

15 suppliers174 claims22,496 services$0.30 avg. paid by Medicare

Prednisone, immediate release or delayed release, oral, 1 mg J7512

Treatment-Treatment - Miscellaneous · category RX029N

7 suppliers39 claims5,220 services$0.01 avg. paid by Medicare

Mycophenolate mofetil, oral, 250 mg J7517

Treatment-Treatment - Miscellaneous · category RX029N

6 suppliers46 claims5,680 services$0.19 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

TEXAS MEDICAL CENTER DENTAL

Dentist (General Practice)

6400 FANNIN ST, SUITE 2040
HOUSTON, TX 77030

Harris County (713) 795-0608

SCOTT JAMES RYAN MD

Surgery (Vascular Surgery)

6400 FANNIN ST
HOUSTON, TX 77030

Harris County (713) 486-5100

KRISTIN WHANGER PACINI PA

Physician Assistant (Surgical)

6400 FANNIN ST, 1700
HOUSTON, TX 77030

Harris County (713) 486-1800

DR. RANA OMAR AFIFI MD

Surgery (Vascular Surgery)

6400 FANNIN ST, SUITE NUMBER 2850
HOUSTON, TX 77030

Harris County (713) 486-5100

DR. MICHAEL S SWEENEY M.D.,

Thoracic Surgery (Cardiothoracic Vascular Surgery)

6400 FANNIN ST, STE 3000
HOUSTON, TX 77030

Harris County (713) 790-0841

BAYLOR COLLEGE OF MEDICINE, DEPARTMENT OF ORTHOPEDIC SURGERY

Orthopaedic Surgery

6400 FANNIN ST, SUITE 1620
HOUSTON, TX 77030

Harris County (713) 740-2200

TARA L WEGRYN MD PA

Specialist

6400 FANNIN ST, SUITE 2295
HOUSTON, TX 77030

Harris County (713) 791-9778

JORDANNA ESPANOLA MSN, RN, FNP-C

Nurse Practitioner (Family)

6400 FANNIN ST, SUITE 1400
HOUSTON, TX 77030

Harris County (281) 914-9756

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 Sriram Nathan's NPI number?

The NPI number for Sriram Nathan is 1285602607. It was assigned to this individual provider in the NPPES registry on March 10, 2006.

Where is Sriram Nathan located?

Sriram Nathan practices at 6400 Fannin St Suite 2500, Houston, TX 77030. The listed phone number is (713) 704-4300.

What is Sriram Nathan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Advanced Heart Failure and Transplant Cardiology, with taxonomy code 207RA0001X.

Is Sriram Nathan enrolled in Medicare?

Yes. Sriram Nathan 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 Sriram Nathan accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 3 other insurers list Sriram Nathan 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 Sriram Nathan affiliated with any hospitals?

According to CMS data, Sriram Nathan is affiliated with Memorial Hermann - Texas Medical Center, De Tar Hospital Navarro, Memorial Hermann Hospital System and Memorial Hermann Northeast Hospital.

When was this NPI record last updated?

The NPPES record for Sriram Nathan was last updated on January 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.