GAUTHAM S IYER (NP) – Adult Health Nurse Practitioner, NPI 1952534422
Adult Health Nurse Practitioner
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
16,360 NURSE PRACTITIONER in CA
Provider Addresses for GAUTHAM S IYER (NP)
500 PARNASSUS AVE
4TH FLOOR MUW-420A
SAN FRANCISCO, CA 941432203
Phone: (573) 999-5365
Type: Mailing
Columbia Post Office, 6801, Oak Hall Lane, Howard County, Maryland, 21045, United States
COLUMBIA, MO 652057687
Phone: (573) 882-2259
Type: Mailing
University Hospital, 1, Hospital Drive, Columbia, Boone County, Missouri, 65212, United States
SUITE MA 438,
COLUMBIA, MO 652120001
Phone: (573) 882-8788
Fax: (573) 884-4892
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2011-12-28
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 |
|---|---|---|---|---|
| I20111228000428 | I | Nurse Practitioner | 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 |
|---|---|---|---|---|
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 49 | 13 | $0 |
Insurance plans in this area (ZIP 94143)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Hospitalist, Internal Medicine | CA | |
| Internal Medicine, Interventional Cardiology | MD | |
| Hospitalist, Internal Medicine | CA | |
| Internal Medicine | PA | |
| Hematology/Oncology, Internal Medicine | CA | |
| Internal Medicine, Cardiovascular Disease (Cardiology) | MA | |
| Hospitalist, Internal Medicine | IL | |
| Internal Medicine | CA | |
| Hospitalist, Internal Medicine, Hospice/Palliative Care | CA | |
| Internal Medicine, Interventional Cardiology, Cardiovascular Disease (Cardiology) | IL |
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