DR. ZACHARY MICHAEL ZWOLAK (D.O.) – Family Medicine Physician, NPI 1265695571
Family Medicine Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
270 ADDICTION MEDICINE in CA
Provider Addresses for DR. ZACHARY MICHAEL ZWOLAK (D.O.)
1280 S Victoria Avenue #250
Ventura, CA 930036521
Phone: (805) 351-0745
Fax: (805) 288-6744
Type: Location
800 S VICTORIA AVE, L4615
VCHCA - PHYSICIAN SERVICES
VENTURA, CA 930090003
Phone: (805) 677-5181
Fax: (805) 677-5304
Type: Mailing
Ventura County Medical Center, 300, Hillmont Avenue, Ventura, Ventura County, California, 93003, United States
VENTURA, CA 930031651
Phone: (805) 652-6100
Fax: (805) 652-3252
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 28 Open Payments records for all available years, with a total value of $528.
Total Amount is formed as General ($528) + Research ($0) + Ownership ($0) = $528.
Last reported payment date: 2024-12-09 • Largest payer in this snapshot: Indivior Inc. ($288).
Total Amount
$528
General + Research + Ownership
Payments
28
Total payment records
General Amount
$528
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-09
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Indivior Inc. | $288 |
| ABBVIE INC. | $77 |
| Gilead Sciences, Inc. | $70 |
| Alkermes, Inc. | $68 |
| Hikma Pharmaceuticals USA | $25 |
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: 2013-04-09
PECOS data refreshed: 2026-06-15
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 |
|---|---|---|---|---|
| I20130409000100 | I | Addiction Medicine | 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99238 | Hospital discharge day management, 30 minutes or less | 43 | 43 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 40 | 27 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 40 | 27 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 31 | 31 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 25 | 17 | $0 |
Insurance plans in this area (ZIP 93003)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| - | CA | |
| Family Practice | CA | |
| - | CA | |
| Orthopedic Surgery | CA | |
| - | CA | |
| N E U R O S U R G E R Y | NY | |
| Family Practice | CA | |
| Family Practice | MA | |
| Anesthesiology, Critical Care (Intensivists), Internal Medicine | CA |
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