GEORGE S. HORNG (MD) – Critical Care Medicine (Internal Medicine) Physician, NPI 1306924972
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 GEORGE S. HORNG (MD)
2351, Clay Street, Pacific Heights, San Francisco, California, 94115, United States
SUITE 501
SAN FRANCISCO, CA 941151931
Phone: (415) 923-3421
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 27 Open Payments records for all available years, with a total value of $2,005.
Total Amount is formed as General ($2,005) + Research ($0) + Ownership ($0) = $2,005.
Last reported payment date: 2024-10-24 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($1,681).
Total Amount
$2,005
General + Research + Ownership
Payments
27
Total payment records
General Amount
$2,005
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
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: 2007-01-26
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 |
|---|---|---|---|---|
| I20070126000621 | 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 | 278 | 133 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 240 | 139 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 48 | 48 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 47 | 37 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 12 | 12 | $0 |
Insurance plans in this area (ZIP 94115)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Critical Care (Intensivists), Critical Care (Intensivists), Pulmonary Disease | CA | |
| Critical Care (Intensivists), Internal Medicine | NY | |
| Pulmonary Disease, Critical Care (Intensivists), Sleep Medicine | CA | |
| Critical Care (Intensivists), Pulmonary Disease | CA | |
| Pulmonary Disease, Critical Care (Intensivists), Internal Medicine | CA | |
| Critical Care (Intensivists), Internal Medicine | MO | |
| Critical Care (Intensivists) | CA | |
| Critical Care (Intensivists) | MA | |
| Pulmonary Disease | CA | |
| Internal Medicine, Critical Care (Intensivists), Pulmonary Disease | CA |
Reviews
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