DR. MARWAN A NASIR (M.D.) – Anatomic Pathology & Clinical Pathology Physician, NPI 1962590562
Anatomic Pathology & Clinical Pathology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,394 PATHOLOGY in TX
Provider Addresses for DR. MARWAN A NASIR (M.D.)
Tomball Post Office, 122, Holderrieth Boulevard, Tomball, Harris County, Texas, 77375, United States
TOMBALL, TX 773771568
Phone: (281) 357-4409
Fax: (281) 255-4461
Type: Mailing
3007 WOODLAND HILLS DRIVE #94
KINGWOOD, TX 773391403
Phone: (832) 412-8670
Fax: (832) 559-0652
Type: Mailing
921 GESSNER RD
HOUSTON, TX 770242501
Phone: (832) 412-8670
Fax: (832) 559-0652
Type: Location
Tomball Regional Medical Center, 605, Holderrieth Boulevard, Tomball, Harris County, Texas, 77375, United States
TOMBALL, TX 773756445
Phone: (281) 401-7617
Fax: (281) 255-3431
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: 2010-08-26
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 |
|---|---|---|---|---|
| I20100826000705 | I | Pathology | TX | 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 | 893 | 443 | $0 |
| 88341 | Special stained specimen slides to examine tissue, each additional procedure | 270 | 45 | $0 |
| 88342 | Special stained specimen slides to examine tissue, initial procedure | 105 | 70 | $0 |
| 88307 | Pathology examination of tissue using a microscope, moderately high complexity | 73 | 49 | $0 |
| 88304 | Pathology examination of tissue using a microscope, moderately low complexity | 54 | 49 | $0 |
Insurance plans in this area (ZIP 77377)
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Provider's Procedures
Group practice members
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