CMS-1500 Box 24J / 33a • NPI
1821545484
Type 1 Individual Rendering/Ordering
HIPAA NUCC Taxonomy • CMS Code
207R00000X (CMS 11)
Board-Certified Internist (Adult Diagnostic & Chronic Disease Physician)
Box 32 Service Location & ZIP+4
795 EL CAMINO REAL, PALO ALTO, CA, 94301-2302
✓ 9-Digit EDI 837 ZIP+4 (94301-2302)
✓ HHS OIG LEIE Sanction Screening — VERIFIED CLEAR:
NPI
1821545484 (HAMZA ABBASI) has 0 active federal exclusions across all 84,224 HHS OIG LEIE sanction records (Database Verified: 2026-11-11).
CMS Medicare Order & Referring PECOS Eligibility
Medicare Part B
✓ Eligible
DMEPOS Ordering
✓ Eligible
Home Health (HHA)
✓ Eligible
Power Mobility
No
Hospice Referring
✓ Eligible
Empirical CMS Medicare Claims, CPT Utilization & Part D Prescribing (NPI #1821545484)
Medicare Beneficiaries
256
Total Billed Services
755
Distinct CPT/HCPCS Codes
11
Medicare Allowed Total
$101,670.58
Actual Top Billed CPT / HCPCS Procedures (CMS Part B)
| CPT / HCPCS | Clinical Procedure Description | Services |
|---|---|---|
99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 69 |
99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 26 |
99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 514 |
99239 | Hospital discharge day management, more than 30 minutes | 119 |
Actual Top Prescribed Medications (CMS Part D)
| Brand / Generic Medication | Total Claims | Patients |
|---|---|---|
| Eliquis Apixaban | 13 | <11 |
Official CMS NPPES Credential & Practice Profile
| 10-Digit NPI Number | 1821545484 (NPI-1 Individual Practitioner) |
|---|---|
| Provider / Legal Name | HAMZA ABBASI |
| Plain-English Specialty | Board-Certified Internist (Adult Diagnostic & Chronic Disease Physician) NUCC Code: 207R00000X (Internal Medicine) |
| Certifying / Licensing Body | American Board of Internal Medicine (ABIM) |
| Practice Location Address | 795 EL CAMINO REAL, PALO ALTO, CA, 94301-2302 |
| Practice Telephone / Fax | Tel: (650) 321-4121 |
| Administrative Mailing Address | 325 DISTEL CIR, LOS ALTOS, CA, 94022-1408 |
| Enumeration & Last Sync | Enumerated: 2016-09-01 | CMS Record Updated: 2023-07-11 |
Clinic Location, Accessibility & Directions
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Plain-English Taxonomy & CMS Crosswalk (207R00000X)
What Does Taxonomy Code 207R00000X Mean?
In the HIPAA National Uniform Claim Committee (NUCC) classification, code 207R00000X translates to:
"Board-Certified Internist (Adult Diagnostic & Chronic Disease Physician)"
Specialty Clinical Procedures & Therapeutic Classes
Standard Scope of Care (HAMZA ABBASI)
Typical CPT / Diagnostic Procedures:- Complex Multi-System Adult Diagnostic Workup (CPT 99204–99215)
- Preoperative Medical Risk Assessment & Cardiac Clearance
- Chronic Kidney, Hepatic & Metabolic Panel Interpretation
- Adult Inpatient Hospitalist Management & Discharge Coordination
- Antihypertensives (ACE Inhibitors, ARBs, Calcium Channel Blockers, Thiazides)
- Oral Antidiabetic Agents, Basal/Bolus Insulins & Lipid-Lowering Statins
- Direct Oral Anticoagulants (Apixaban, Rivaroxaban) & Antiplatelets
- Levothyroxine (Hypothyroidism) & Proton Pump Inhibitors (Pantoprazole)
All Registered NUCC Taxonomies & State Licenses
| Taxonomy Code & Plain-English Description | State License & Primary Status |
|---|---|
207R00000X — Internal MedicinePlain English: Board-Certified Internist (Adult Diagnostic & Chronic Disease Physician) | State: CA | License: A177853 | Primary: Yes (Primary) |
Medical Billing, RCM & Hospital Credentialing Teams:
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