SUBRAMANIAN SIVARAJAN (M.D.) – Nephrology Physician, NPI 1154310951
Nephrology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,404 NEPHROLOGY in CA
Provider Addresses for SUBRAMANIAN SIVARAJAN (M.D.)
325, Distel Circle, Los Altos, Santa Clara County, California, 94022, United States
LOS ALTOS, CA 940221408
Phone: (650) 853-6795
Fax: (816) 444-2810
Type: Mailing
325 Distel Cir
Los Altos, CA 940221408
Phone: (650) 853-6795
Fax: (816) 444-2810
Type: Location
795 EL CAMINO REAL FL 2
PALO ALTO, CA 943012302
Phone: (650) 328-8385
Type: Mailing
795, El Camino Real, Palo Alto, Santa Clara County, California, 94301, United States
PALO ALTO, CA 943012302
Phone: (650) 328-8385
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 49 Open Payments records for all available years, with a total value of $1,438.
Total Amount is formed as General ($1,438) + Research ($0) + Ownership ($0) = $1,438.
Last reported payment date: 2024-11-26 • Largest payer in this snapshot: Amgen Inc. ($348).
Total Amount
$1,438
General + Research + Ownership
Payments
49
Total payment records
General Amount
$1,438
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-26
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Amgen Inc. | $348 |
| Travere Therapeutics, Inc. | $344 |
| Ardelyx, Inc. | $194 |
| GlaxoSmithKline, LLC. | $73 |
| Ascendis Pharma Inc | $69 |
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: 2017-01-26
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 |
|---|---|---|---|---|
| I20170126001150 | I | Nephrology | CA | 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 |
|---|---|---|---|---|
| J0881 | Injection, darbepoetin alfa, 1 microgram (non-esrd use) | 6,200 | 22 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 364 | 260 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 278 | 200 | $0 |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | 149 | 149 | $0 |
| 96372 | Injection of drug or substance under skin or into muscle | 55 | 21 | $0 |
Insurance plans in this area (ZIP 94022)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| D E R M A T O L O G Y | CA | |
| A L L E R G Y/ I M M U N O L O G Y | CA | |
| - | CA | |
| Hospitalist, Obstetrics/Gynecology | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | OR | |
| - | CA | |
| - | CA | |
| - | CA | |
| - | CA | |
| A N E S T H E S I O L O G Y | CA |
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