GREGORY MORRIS GIESLER (MD) – Cardiovascular Disease Physician, NPI 1477518454
Cardiovascular Disease Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
3,010 CARDIOVASCULAR DISEASE (CARDIOLOGY) in CA
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Provider Addresses for GREGORY MORRIS GIESLER (MD)
55, East California Boulevard, Madison Heights, Pasadena, Los Angeles County, California, 91105, United States
3RD FLOOR
PASADENA, CA 911053944
Phone: (626) 793-1227
Fax: (626) 793-3794
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 223 Open Payments records for all available years, with a total value of $5,103.
Total Amount is formed as General ($5,103) + Research ($0) + Ownership ($0) = $5,103.
Last reported payment date: 2024-12-20 • Largest payer in this snapshot: Novartis Pharmaceuticals Corporation ($739).
Total Amount
$5,103
General + Research + Ownership
Payments
223
Total payment records
General Amount
$5,103
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-20
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Novartis Pharmaceuticals Corporation | $739 |
| PFIZER INC. | $562 |
| Medtronic, Inc. | $286 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $282 |
| Merck Sharp & Dohme LLC | $263 |
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: 2006-05-22
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 |
|---|---|---|---|---|
| I20060522000061 | I | Cardiovascular Disease (Cardiology) | 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 |
|---|---|---|---|---|
| J0153 | Injection, adenosine, 1 mg (not to be used to report any adenosine phosphate compounds) | 11,430 | 127 | $0 |
| 99457 | Management using the results of remote vital sign monitoring per calendar month, first 20 minutes | 1,709 | 236 | $0 |
| 99454 | Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days | 1,697 | 249 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 1,448 | 818 | $0 |
| 93306 | Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 795 | 765 | $0 |
Insurance plans in this area (ZIP 91105)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| CARDIOVASCULAR DISEASE (CARDIOLOGY) | CA | 78452 | Nuclear medicine study of vessels of heart using drugs or exercise multiple studies | 32 | 32 |
| CARDIOVASCULAR DISEASE (CARDIOLOGY) | CA | 85610 | Blood test, clotting time | 36 | 11 |
| CARDIOVASCULAR DISEASE (CARDIOLOGY) | CA | 93010 | Routine electrocardiogram (EKG) using at least 12 leads with interpretation and report | 165 | 135 |
| CARDIOVASCULAR DISEASE (CARDIOLOGY) | CA | 93458 | Insertion of catheter in left heart for imaging of blood vessels or grafts and left lower heart | 15 | 15 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Cardiovascular Disease (Cardiology) | CA | |
| Cardiovascular Disease (Cardiology) | CA | |
| Cardiovascular Disease (Cardiology) | CA | |
| Cardiovascular Disease (Cardiology) | CA | |
| - | CA | |
| Cardiovascular Disease (Cardiology) | CA |
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