MICHAEL HUY KHIEM NGUYEN (M.D.) – Hematology & Oncology Physician, NPI 1053846485
Hematology & Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,531 HEMATOLOGY/ONCOLOGY in CA
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Provider Addresses for MICHAEL HUY KHIEM NGUYEN (M.D.)
2351, Clay Street, Pacific Heights, San Francisco, California, 94115, United States
SUITE 380
SAN FRANCISCO, CA 941151931
Phone: (415) 600-6000
Type: Location
23600 TELO AVE STE 260
TORRANCE, CA 905054037
Phone: (424) 435-1037
Fax: (424) 435-1038
Type: Mailing
11175 CAMPUS ST # 11015
LOMA LINDA, CA 923501700
Phone: (909) 558-4910
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 365 Open Payments records for all available years, with a total value of $8,924.
Total Amount is formed as General ($8,924) + Research ($0) + Ownership ($0) = $8,924.
Last reported payment date: 2024-12-30 • Largest payer in this snapshot: ABBVIE INC. ($475).
Total Amount
$8,924
General + Research + Ownership
Payments
365
Total payment records
General Amount
$8,924
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-30
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $475 |
| Novartis Pharmaceuticals Corporation | $452 |
| PFIZER INC. | $442 |
| Regeneron Healthcare Solutions, Inc. | $364 |
| Daiichi Sankyo Inc. | $323 |
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: 2023-08-07
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 |
|---|---|---|---|---|
| I20230807000592 | I | Hematology/Oncology | 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 |
|---|---|---|---|---|
| 99205 | New patient office or other outpatient visit, 60-74 minutes | 12 | 12 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 12 | 11 | $0 |
Insurance plans in this area (ZIP 94115)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| H E M A T O L O G Y/ O N C O L O G Y | CA | |
| H E M A T O L O G Y/ O N C O L O G Y | CA | |
| H E M A T O L O G Y/ O N C O L O G Y | CA | |
| Hematology/Oncology, Internal Medicine | CA | |
| Nurse Practitioner | CA | |
| Hematology/Oncology, Internal Medicine | CA | |
| H E M A T O L O G Y/ O N C O L O G Y | CA | |
| Internal Medicine, Hematology/Oncology | CA | |
| Medical Oncology, Hematology/Oncology | CA | |
| Hematology/Oncology, Internal Medicine | CA |
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