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RAJESH RETHNAM MD., FCCP.
NPI 1275634289
Internal Medicine - Critical Care Medicine in Houston, TX

Active since September 25, 2006PECOS EnrolledAccepts Medicare Assignment
1800 W 26TH ST STE 200, HOUSTON, TX 77008(888) 958-6463(832) 529-6463 Get Directions Write a Review

NPPES record last updated: December 16, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 16, 2023, Dec 29, 2016, May 21, 2016 (3 updates tracked since 2016).

About Rajesh Rethnam Md., Fccp. NPPES

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

RAJESH RETHNAM MD., FCCP. (NPI 1275634289) is an individual critical care medicine provider in Houston, Texas, licensed in Texas (N4033) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, is affiliated with St Joseph Medical Center, and is a graduate of Other (1998).

NPPES Registry Identity

NPI1275634289
Entity TypeIndividualMale
Primary Taxonomy207RC0200X
Provider Legal NameRAJESH RETHNAMCredential: MD., FCCP.
Location Address1800 W 26TH ST STE 200Houston, TX 77008-1452
Mailing Address1800 W 26th St Ste 200Houston, TX 77008-1452 · (888) 958-6463 · Fax (832) 529-6463
Phone(888) 958-6463
Fax(832) 529-6463
Sole ProprietorYes
Medical School CMSOtherGraduated 1998
Enumeration DateSeptember 25, 2006
Last NPPES UpdateDecember 16, 20233 updates tracked since enumeration
NPPES CertifiedDecember 16, 2023
✔ NPI 1275634289 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 5

★ Primary SpecialtyInternal Medicine · Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RC0200X
License✔ Licensed in TX · N4033
Definition
An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Also ListedInternal MedicineTaxonomy 207R00000X · License N 4033 (TX)
Also ListedInternal Medicine · Obesity MedicineTaxonomy 207RB0002X · License N4033 (TX)
Also ListedInternal Medicine · Pulmonary DiseaseTaxonomy 207RP1001X · License N 4033 (TX)
Also ListedInternal Medicine · Sleep MedicineTaxonomy 207RS0012X · License N 4033 (TX)
1800 W 26TH ST STE 200, Houston, TX 77008
Open in Google Maps ↗

Other Identifiers 1

OtherN4033TX · State License

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

Rajesh Rethnam Md., Fccp. 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 ID1254348790
PECOS Enrollment IDI20110520000057
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

3

Medicare enrollment records show Rajesh Rethnam reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Northwest Pulmonary Critical Care And Sleep Specialists Inc
Same address
Pulmonary Disease
1800 W 26TH ST STE 200
Houston, TX 77008
  • Reassigned Medicare billing, Texas enrollment
NPI 1215235155 (281) 652-5864
Pulmonary, Obesity And Sleep Specialists Of Houston PLLC
Same address
Pulmonary Disease
1800 W 26TH ST STE 200
Houston, TX 77008
  • Reassigned Medicare billing, Texas enrollment
  • 3 clinicians in this Medicare group
NPI 1750826707 (888) 958-6463
Sherman MD Provider Inc
5.7 mi
Specialist
1315 ST JOSEPH PKWY STE 806
Houston, TX 77002
  • Reassigned Medicare billing, Texas enrollment
  • 127 clinicians in this Medicare group
NPI 1669367256 (713) 756-4780

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 11

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 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
561 services32 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.
146 services42 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
21 services17 patients
Evaluation of use of breathing device 94664
The evaluation of a breathing device involves checking how effectively you're using it to manage your respiratory condition. It assesses the device's fit, your comfort, and your technique to ensure optimal results.
18 services14 patients
Collection and interpretation of physical parameters stored in computers and/or transmitted by the patient and/or caregiver to qualified health care professional, requiring 30 minutes or more, per 30 days 99091
This service involves gathering and analyzing health data from a patient, which is digitally stored and sent to a healthcare professional. This may include heart rate, blood pressure, or blood sugar levels. The process takes at least 30 minutes and is repeated every 30 days.
16 services11 patients
Test to determine lung volumes using gas dilution or washout 94727
This test measures lung volumes by either diluting or washing out a known amount of gas in your lungs. You'll breathe in a harmless gas, then exhale. The exhaled air is analyzed to assess your lung capacity and function.
14 services13 patients

Hospital Affiliations CMS Care Compare 4

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

St Joseph Medical Center

Acute Care Hospitals · Houston, TX
2/5 CMS rating
OwnershipPhysician
CMS Certification Number450035
Location1401 St. Joseph ParkwayHouston, TX 77002 · Harris County
Emergency services Birthing friendly

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

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

Altus Baytown Hospital

Acute Care Hospitals · Baytown, TX
OwnershipPhysician
CMS Certification Number670109
Location1626 W Baker RoadBaytown, TX 77521 · Harris County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77008 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.

Referred Medical Equipment & Supplies CMS DME claims 10

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

Cushion for use on nasal mask interface, replacement only, each A7032
DME-Other DME · category DE001N
5 suppliers15 claims87 services$16.23 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
6 suppliers18 claims18 services$48.74 avg. paid by Medicare
Headgear used with positive airway pressure device A7035
DME-Other DME · category DE001N
6 suppliers13 claims13 services$15.25 avg. paid by Medicare
Tubing used with positive airway pressure device A7037
DME-Other DME · category DE001N
6 suppliers11 claims11 services$10.07 avg. paid by Medicare
Filter, disposable, used with positive airway pressure device A7038
DME-Other DME · category DE001N
7 suppliers20 claims118 services$1.75 avg. paid by Medicare
Filter, non disposable, used with positive airway pressure device A7039
DME-Other DME · category DE001N
6 suppliers11 claims11 services$5.28 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 3

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

NORTHWEST PULMONARY CRITICAL CARE AND SLEEP SPECIALISTS INC
Internal Medicine (Pulmonary Disease)
1800 W 26TH ST STE 200
HOUSTON, TX 77008
Harris County (281) 652-5864
NI ZHANG
Nurse Practitioner (Family)
1800 W 26TH ST STE 200
HOUSTON, TX 77008
Harris County (281) 652-5864
PULMONARY, OBESITY AND SLEEP SPECIALISTS OF HOUSTON PLLC
Internal Medicine (Pulmonary Disease)
1800 W 26TH ST STE 200
HOUSTON, TX 77008
Harris County (888) 958-6463

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 Rajesh Rethnam's NPI number?

The NPI number for Rajesh Rethnam is 1275634289. It was assigned to this individual provider in the NPPES registry on September 25, 2006.

Where is Rajesh Rethnam located?

Rajesh Rethnam practices at 1800 W 26th St Ste 200, Houston, TX 77008. The listed phone number is (888) 958-6463.

What is Rajesh Rethnam's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.

Is Rajesh Rethnam enrolled in Medicare?

Yes. Rajesh Rethnam 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 Rajesh Rethnam's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Rajesh Rethnam reassigns Medicare benefits to 3 organizations: Northwest Pulmonary Critical Care And Sleep Specialists Inc (Houston, TX), Pulmonary, Obesity And Sleep Specialists Of Houston PLLC (Houston, TX) and Sherman MD Provider Inc (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 Rajesh Rethnam's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Rajesh Rethnam 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 Rajesh Rethnam 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 Rajesh Rethnam affiliated with any hospitals?

According to CMS data, Rajesh Rethnam is affiliated with St Joseph Medical Center, Memorial Hermann - Texas Medical Center, Hca Houston Healthcare Medical Center and Altus Baytown Hospital.

When was this NPI record last updated?

The NPPES record for Rajesh Rethnam was last updated on December 16, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.