DR. MICHAEL WILLIAM (MD) – Sleep Medicine (Internal Medicine) Physician, NPI 1669931440
Sleep Medicine (Internal Medicine) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
214 SLEEP MEDICINE in NY
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Provider Addresses for DR. MICHAEL WILLIAM (MD)
John T. Mather Memorial Hospital, 75, North Country Road, Port Jefferson, Suffolk County, New York, 11777, United States
PORT JEFFERSON, NY 117772190
Phone: (631) 686-1443
Fax: (631) 686-7651
Type: Mailing
2840 LEGACY DR STE 400
FRISCO, TX 750346055
Phone: (469) 200-6100
Type: Location
1625 N CAMPBELL AVE
TUCSON, AZ 857194330
Phone: (520) 694-2522
Fax: (520) 694-2515
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 8 Open Payments records for all available years, with a total value of $146.
Total Amount is formed as General ($146) + Research ($0) + Ownership ($0) = $146.
Last reported payment date: 2024-10-10 • Largest payer in this snapshot: HARMONY BIOSCIENCES LLC ($61).
Total Amount
$146
General + Research + Ownership
Payments
8
Total payment records
General Amount
$146
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-10
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| HARMONY BIOSCIENCES LLC | $61 |
| Novo Nordisk Inc | $19 |
| Renalytix AI, Inc. | $18 |
| Avadel CNS Pharmaceuticals, LLC | $17 |
| ABBVIE INC. | $16 |
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: 2023-09-08
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 |
|---|---|---|---|---|
| I20230908002537 | I | Internal Medicine | 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 22 | 22 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 13 | 13 | $0 |
Insurance plans in this area (ZIP 11777)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine | TX | |
| O B S T E T R I C S/ G Y N E C O L O G Y | TX | |
| Internal Medicine | TX | |
| Family Practice | TX | |
| Family Practice | TX | |
| Family Practice | TX | |
| O B S T E T R I C S/ G Y N E C O L O G Y | TX | |
| Family Practice | TX | |
| Family Practice | TX | |
| Internal Medicine, Sleep Medicine | TX |
Reviews
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