DR. XIANFENG F ZHAO (M.D.) – Anatomic Pathology & Clinical Pathology Physician, NPI 1821027640
Anatomic Pathology & Clinical Pathology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
434 PATHOLOGY in MD
Provider Addresses for DR. XIANFENG F ZHAO (M.D.)
22 S Greene St
NBW73
Baltimore, MD 212011544
Phone: (410) 328-5514
Fax: (410) 328-0929
Type: Location
PO BOX 64592
BALTIMORE, MD 212644592
Phone: (410) 328-5555
Fax: (410) 328-0929
Type: Mailing
877 JEFFERSON AVE
MEMPHIS, TN 381032807
Phone: (901) 545-7514
Fax: (901) 302-2067
Type: Location
University of Maryland Medical Center, 22, South Greene Street, Ridgely's Delight, Baltimore, Maryland, 21201, United States
NBW73
BALTIMORE, MD 212011544
Phone: (410) 328-5514
Fax: (410) 328-0929
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: 2025-07-21
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 |
|---|---|---|---|---|
| I20250721003325 | I | Pathology | AZ | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 21201)
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