DR. SUBRAMANIYAM RAJAN (M.D.) – Critical Care Medicine (Internal Medicine) Physician, NPI 1922324813
Critical Care Medicine (Internal Medicine) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
13,290 INTERNAL MEDICINE in TX
Provider Addresses for DR. SUBRAMANIYAM RAJAN (M.D.)
PO BOX 117655
CARROLLTON, TX 750117655
Phone: (512) 674-9025
Type: Mailing
5920 W WILLIAM CANNON DR STE 150
AUSTIN, TX 787491902
Phone: (512) 977-0123
Fax: (512) 977-0126
Type: Location
10811, Rindle Ranch, Rivermist, San Antonio, Bexar County, Texas, 78249, United States
SAN ANTONIO, TX 782493923
Phone:
Type: Mailing
150, West William Cannon Drive, Buckingham Ridge, Austin, Travis County, Texas, 78745, United States
AUSTIN, TX 787491902
Phone: (512) 441-9799
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 83 Open Payments records for all available years, with a total value of $47,407.
Total Amount is formed as General ($47,407) + Research ($0) + Ownership ($0) = $47,407.
Last reported payment date: 2024-12-27 • Largest payer in this snapshot: Intuitive Surgical, Inc. ($46,885).
Total Amount
$47,407
General + Research + Ownership
Payments
83
Total payment records
General Amount
$47,407
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-27
Latest reported date
Top Companies
Largest payers in this snapshot
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2017-09-06
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20170906001278 | I | Internal Medicine | TX | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 214 | 172 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 204 | 93 | $0 |
| 94375 | Test to measure rate of airflow | 136 | 132 | $0 |
| 94726 | Test to determine lung volumes using sensors | 130 | 126 | $0 |
| 94729 | Test to examine how well the lungs exchange gases | 129 | 125 | $0 |
Insurance plans in this area (ZIP 75011)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Pulmonary Disease, Internal Medicine | TX | |
| Pulmonary Disease, Internal Medicine | MI | |
| Critical Care (Intensivists) | TX | |
| Pulmonary Disease, Critical Care (Intensivists) | TX | |
| Certified Clinical Nurse Specialist (Cns) | TX | |
| Internal Medicine | TX | |
| Critical Care (Intensivists), Pulmonary Disease | TX | |
| Internal Medicine, Pulmonary Disease | TX | |
| Critical Care (Intensivists), Internal Medicine | TX |
Reviews
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