THOMAS C WILLIAMS (M.D.) – Pulmonary Disease Physician, NPI 1619004967
Pulmonary Disease Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
Provider Addresses for THOMAS C WILLIAMS (M.D.)
13855 E 14TH ST
SAN LEANDRO, CA 945782611
Phone: (510) 357-6579
Fax: (510) 357-4687
Type: Mailing
642 MANDANA BLVD
OAKLAND, CA 946102333
Phone: (510) 504-1226
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: 2007-12-21
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 |
|---|---|---|---|---|
| I20071221000313 | I | Pulmonary Disease | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 94578)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| PULMONARY DISEASE | CA | 94060 | Measurement and graphic recording of the amount and speed of breathed air, before and following medication administration | 23 | 20 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Cardiac Electrophysiology, Internal Medicine, Cardiovascular Disease (Cardiology) | CA | |
| Cardiovascular Disease (Cardiology), Internal Medicine, Interventional Cardiology | CA | |
| Critical Care (Intensivists), Internal Medicine | MO | |
| Pulmonary Disease, Critical Care (Intensivists) | CA | |
| Critical Care (Intensivists), Pulmonary Disease | CA | |
| Cardiovascular Disease (Cardiology) | CA | |
| - | NY | |
| - | HI | |
| Interventional Cardiology, Cardiovascular Disease (Cardiology), Cardiovascular Disease (Cardiology) | LA | |
| Internal Medicine, Pulmonary Disease, Critical Care (Intensivists), Internal Medicine, Critical Care (Intensivists) | FL |
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