DR. UMA MAHADEVAN (MD) – Gastroenterology Physician, NPI 1851355283
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,981 GASTROENTEROLOGY in CA
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Provider Addresses for DR. UMA MAHADEVAN (MD)
1635 DIVISADERO STREET, SUITE 625, BOX 1821
SAN FRANCISCO, CA 941430001
Phone: (415) 476-4029
Fax: (415) 476-4150
Type: Mailing
2330, Post Street, Western Addition, San Francisco, California, 94115, United States
SAN FRANCISCO, CA 941153465
Phone: (415) 502-4444
Fax: (415) 505-2249
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 52 Open Payments records for all available years, with a total value of $69,932.
Total Amount is formed as General ($67,392) + Research ($2,540) + Ownership ($0) = $69,932.
Last reported payment date: 2024-11-24 • Largest payer in this snapshot: PFIZER INC. ($14,145).
Total Amount
$69,932
General + Research + Ownership
Payments
52
Total payment records
General Amount
$67,392
General payments
Research Amount
$2,540
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-24
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| PFIZER INC. | $14,145 |
| Takeda Pharmaceuticals U.S.A., Inc. | $13,785 |
| Janssen Biotech, Inc. | $12,450 |
| ABBVIE INC. | $8,496 |
| E.R. Squibb & Sons, L.L.C. | $6,744 |
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: 2008-03-06
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 |
|---|---|---|---|---|
| I20080306000213 | I | Gastroenterology | 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 |
|---|---|---|---|---|
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 36 | 30 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 31 | 31 | $0 |
| G0500 | Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 21 | 21 | $0 |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | 19 | 19 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 11 | 11 | $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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