DR. WILLIAM N SCHREIBER (MD) – Internal Medicine Physician, NPI 1366441826
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
3,447 INTERNAL MEDICINE in CT
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Provider Addresses for DR. WILLIAM N SCHREIBER (MD)
9, Washington Avenue, Centerville, Hamden, New Haven County, Connecticut, 06518, United States
2ND FLOOR
HAMDEN, CT 065183267
Phone: (203) 248-3013
Fax: (203) 248-2878
Type: Mailing
1, Bradley Road, Woodbridge, New Haven County, Connecticut, 06525, United States
SUITE 709
WOODBRIDGE, CT 065252285
Phone: (203) 397-3950
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: 2010-09-11
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 |
|---|---|---|---|---|
| I20100911000095 | I | Internal Medicine | CT | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 366 | 215 | $0 |
| 81003 | Automated urinalysis test | 173 | 166 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 159 | 159 | $0 |
| 93000 | Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 91 | 89 | $0 |
| 82274 | Stool analysis for blood, by fecal hemoglobin determination by immunoassay | 63 | 62 | $0 |
Insurance plans in this area (ZIP 06518)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | CT | |
| Internal Medicine | NY | |
| N E U R O L O G Y | CT | |
| Physician Assistant | CT | |
| Physician Assistant | CT | |
| Internal Medicine | CT | |
| P O D I A T R Y | CT | |
| P O D I A T R Y | CT | |
| Physical Medicine And Rehabilitation, Neurology | CT | |
| Internal Medicine | CT |
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