DR. REGGIE ZHAN (M.D.) – Dermatopathology (Pathology) Physician, NPI 1235174640
Dermatopathology (Pathology) Physician
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Profile Insights
NPPES metrics only — not quality of care.
1,584 PATHOLOGY in CA
Provider Addresses for DR. REGGIE ZHAN (M.D.)
3637 MISSION AVE
SUITE 5
CARMICHAEL, CA 956082946
Phone: (916) 863-1496
Type: Mailing
2101 E JEFFERSON ST
ROCKVILLE, MD 208524908
Phone: (800) 227-6472
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: 2014-05-28
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20100820000420 | I | Pathology | DC | TBD |
| I20140528001514 | I | Pathology | MD | 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 | 98 | 62 | $0 |
Insurance plans in this area (ZIP 95608)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | MD | |
| - | MD | |
| Internal Medicine | VA | |
| Family Practice | VA | |
| Family Practice | VA | |
| - | MD | |
| - | MD | |
| Family Practice | WV | |
| - | GA | |
| - | MD |
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