DR. ANDREW E HORVAI (MD) – Anatomic Pathology Physician, NPI 1891752309
Anatomic Pathology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,583 PATHOLOGY in CA
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Provider Addresses for DR. ANDREW E HORVAI (MD)
1635, Divisadero Street, Western Addition, San Francisco, California, 94115, United States
STE 625, BOX 1821
SAN FRANCISCO, CA 941430001
Phone: (415) 476-4029
Fax: (415) 476-4150
Type: Mailing
UCSF Mount Zion Campus, 1600, Divisadero Street, Western Addition, San Francisco, California, 94115, United States
SAN FRANCISCO, CA 941430001
Phone: (415) 885-7313
Fax: (415) 673-9726
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2008-02-29
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 |
|---|---|---|---|---|
| I20080229000301 | I | Pathology | 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 |
|---|---|---|---|---|
| 88341 | Special stained specimen slides to examine tissue, each additional procedure | 305 | 59 | $0 |
| 88305 | Pathology examination of tissue using a microscope, intermediate complexity | 146 | 78 | $0 |
| 88307 | Pathology examination of tissue using a microscope, moderately high complexity | 124 | 81 | $0 |
| 88342 | Special stained specimen slides to examine tissue, initial procedure | 67 | 60 | $0 |
| 88304 | Pathology examination of tissue using a microscope, moderately low complexity | 48 | 44 | $0 |
Insurance plans in this area (ZIP 94143)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| PATHOLOGY | CA | 88304 | Pathology examination of tissue using a microscope, moderately low complexity | 84 | 76 |
| PATHOLOGY | CA | 88307 | Pathology examination of tissue using a microscope, moderately high complexity | 261 | 144 |
| PATHOLOGY | CA | 88312 | Special stained specimen slides to identify organisms including interpretation and report | 21 | 14 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| O P H T H A L M O L O G Y | CA | |
| Hospitalist, Internal Medicine | CA | |
| - | CA | |
| - | CA | |
| Physician Assistant | CA | |
| - | CA | |
| - | ID | |
| Diagnostic Radiology | CA | |
| - | MD | |
| Orthopedic Surgery | CA |
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