MR. JAMES JOSEPH HERSHON (MD) – Critical Care Medicine (Internal Medicine) Physician, NPI 1508940305
Critical Care Medicine (Internal Medicine) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,125 CRITICAL CARE (INTENSIVISTS) in CA
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Provider Addresses for MR. JAMES JOSEPH HERSHON (MD)
2351, Clay Street, Pacific Heights, San Francisco, California, 94115, United States
# 501
SAN FRANCISCO, CA 94115
Phone: (415) 923-3421
Fax: (415) 600-1414
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $45.
Total Amount is formed as General ($45) + Research ($0) + Ownership ($0) = $45.
Last reported payment date: 2023-11-17 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($28).
Total Amount
$45
General + Research + Ownership
Payments
2
Total payment records
General Amount
$45
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-11-17
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| AstraZeneca Pharmaceuticals LP | $28 |
| Inari Medical, Inc. | $17 |
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: 2008-08-22
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 |
|---|---|---|---|---|
| I20080822000663 | I | Critical Care (Intensivists) | 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 |
|---|---|---|---|---|
| 99291 | Critical care, first 30-74 minutes | 658 | 150 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 260 | 100 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 43 | 42 | $0 |
| 36556 | Insertion of non-tunneled central venous tube for infusion (5 years or older) | 19 | 19 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 18 | 15 | $0 |
Insurance plans in this area (ZIP 94115)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| CRITICAL CARE (INTENSIVISTS) | CA | 31500 | Emergent insertion of breathing tube into windpipe cartilage using an endoscope | 21 | 18 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Diagnostic Radiology | AZ | |
| - | CA | |
| Diagnostic Radiology | CA | |
| Diagnostic Radiology | CA | |
| - | CA | |
| - | CA | |
| Diagnostic Radiology | CA | |
| Diagnostic Radiology | CA | |
| Diagnostic Radiology | OH | |
| Vascular Surgery | NY |
Reviews
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