MS. BONNIE L BALZER (MD) – Clinical Pathology/Laboratory Medicine Physician, NPI 1649247602
Clinical Pathology/Laboratory Medicine Physician
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Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,584 PATHOLOGY in CA
Provider Addresses for MS. BONNIE L BALZER (MD)
4301 Northstar Way
Modesto, CA 953569262
Phone: (209) 577-1200
Fax: (209) 577-6517
Type: Location
3700, California Street, Jordan Park, San Francisco, California, 94118, United States
SAN FRANCISCO, CA 941181618
Phone:
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
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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: 2022-12-07
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 5 Medicare enrollment records; no due dates published yet.
Enrollment records
5
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 |
|---|---|---|---|---|
| I20060329000241 | I | Pathology | CA | TBD |
| I20211115002462 | I | Pathology | TX | TBD |
| I20220331001286 | I | Pathology | KS | TBD |
| I20220407000436 | I | Pathology | FL | TBD |
| I20221207003040 | I | Pathology | NV | 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 |
|---|---|---|---|---|
| 88305 | Pathology examination of tissue using a microscope, intermediate complexity | 2,197 | 1,380 | $0 |
| 88341 | Special stained specimen slides to examine tissue, each additional procedure | 794 | 170 | $0 |
| 88342 | Special stained specimen slides to examine tissue, initial procedure | 224 | 206 | $0 |
| 88312 | Special stained specimen slides to identify organisms including interpretation and report | 209 | 118 | $0 |
| 88304 | Pathology examination of tissue using a microscope, moderately low complexity | 190 | 165 | $0 |
Insurance plans in this area (ZIP 95356)
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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 | 133 | 117 |
| PATHOLOGY | CA | 88312 | Special stained specimen slides to identify organisms including interpretation and report | 100 | 81 |
| PATHOLOGY | CA | 88342 | Tissue or cell analysis by immunologic technique | 177 | 139 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Hospitalist, Internal Medicine | CA | |
| P A T H O L O G Y | NY | |
| - | CA | |
| - | CA | |
| P A T H O L O G Y | MO | |
| A N E S T H E S I O L O G Y | NY | |
| Physician Assistant | CA | |
| Diagnostic Radiology | MA | |
| A N E S T H E S I O L O G Y | CA | |
| A N E S T H E S I O L O G Y | CA |
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