AJAY KUMAR UPADHYAY (MD) – Specialist, NPI 1104888155
Specialist
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
3,317 GENERAL SURGERY in CA
Provider Addresses for AJAY KUMAR UPADHYAY (MD)
27206 Calaroga Ave Ste 206
Hayward, CA 945454300
Phone: (510) 732-5731
Fax: (510) 732-5739
Type: Location
3010 Colby St Ste 118
Berkeley, CA 947052059
Phone: (510) 486-0818
Fax: (510) 486-0819
Type: Location
Hawthorne MOB, 365, Hawthorne Avenue, Pill Hill, Oakland, Alameda County, California, 94609, United States
STE 101
OAKLAND, CA 946093115
Phone: (510) 465-5523
Fax: (510) 832-6061
Type: Location
2345, Country Hills Drive, Antioch, Contra Costa County, California, 94509, United States
ANTIOCH, CA 945097319
Phone: (925) 418-0278
Fax: (925) 978-0991
Type: Mailing
365 HAWTHORNE AVE
STE 101
OAKLAND, CA 946093115
Phone: (510) 465-5523
Fax: (510) 832-6061
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 28 Open Payments records for all available years, with a total value of $2,218.
Total Amount is formed as General ($2,218) + Research ($0) + Ownership ($0) = $2,218.
Last reported payment date: 2024-10-24 • Largest payer in this snapshot: Medtronic, Inc. ($1,872).
Total Amount
$2,218
General + Research + Ownership
Payments
28
Total payment records
General Amount
$2,218
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-24
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Medtronic, Inc. | $1,872 |
| Intuitive Surgical, Inc. | $173 |
| Teleflex LLC | $69 |
| Ethicon US, LLC | $63 |
| Boston Scientific Corporation | $22 |
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: 2011-01-18
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 |
|---|---|---|---|---|
| I20110118000545 | I | General Surgery | 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 |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 103 | 55 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 91 | 75 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 81 | 81 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 46 | 41 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 36 | 36 | $0 |
Insurance plans in this area (ZIP 94545)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| G A S T R O E N T E R O L O G Y | CA | |
| General Surgery | CA | |
| N E U R O S U R G E R Y | CA | |
| - | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| P O D I A T R Y | CA | |
| - | CA | |
| E N D O C R I N O L O G Y | KS | |
| Qualified Audiologist | CA |
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