GREGORY MARSHALL HEESTAND (M.D.) – Medical Oncology Physician, NPI 1770568867
Medical Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,536 HEMATOLOGY/ONCOLOGY in CA
Provider Addresses for GREGORY MARSHALL HEESTAND (M.D.)
Campus Drive, Stanford, Santa Clara County, California, 94304, United States
CCSR ROOM 1145
STANFORD, CA 943055151
Phone: (650) 498-6000
Type: Mailing
269 Campus Drive
CCSR Room 1145
Stanford, CA 943055151
Phone: (650) 498-6000
Type: Location
300 PASTEUR DR
STANFORD, CA 943052200
Phone: (650) 723-4000
Type: Mailing
Stanford Hospital, 300, Pasteur Drive, Stanford, Palo Alto, Santa Clara County, California, 94305, United States
STANFORD, CA 943052200
Phone: (650) 498-6000
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 15 Open Payments records for all available years, with a total value of $10,002.
Total Amount is formed as General ($10,002) + Research ($0) + Ownership ($0) = $10,002.
Last reported payment date: 2024-10-17 • Largest payer in this snapshot: Exelixis Inc. ($4,868).
Total Amount
$10,002
General + Research + Ownership
Payments
15
Total payment records
General Amount
$10,002
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-17
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Exelixis Inc. | $4,868 |
| AstraZeneca Pharmaceuticals LP | $2,875 |
| Eisai Inc. | $2,131 |
| Genentech USA, Inc. | $111 |
| Merck Sharp & Dohme LLC | $18 |
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: 2010-08-13
PECOS data refreshed: 2026-06-15
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 |
|---|---|---|---|---|
| I20100813000200 | 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 |
|---|---|---|---|---|
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 206 | 49 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 197 | 97 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 192 | 71 | $0 |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | 32 | 32 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 29 | 28 | $0 |
Insurance plans in this area (ZIP 94305)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| O B S T E T R I C S/ G Y N E C O L O G Y | TX | |
| - | CA | |
| - | CA | |
| - | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| Plastic And Reconstructive Surgery | CA | |
| Pain Management, Anesthesiology | CA | |
| A N E S T H E S I O L O G Y | CA | |
| Sleep Medicine | FL | |
| A N E S T H E S I O L O G Y | MA |
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