DR. DOUGLAS JOHN ZAKOLSKI (D.O.) – Internal Medicine Physician, NPI 1659356400
Internal Medicine Physician
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Profile Insights
NPPES metrics only — not quality of care.
7,218 INTERNAL MEDICINE in MI
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Provider Addresses for DR. DOUGLAS JOHN ZAKOLSKI (D.O.)
Beaumont Boulevard, Southfield, Oakland County, Michigan, 48034, United States
SOUTHFIELD, MI 480333849
Phone:
Type: Mailing
Blanzy Medical Clinic, 14319, Dix-Toledo Highway, Southgate, Wayne County, Michigan, 48195, United States
SOUTHGATE, MI 481952506
Phone: (734) 285-0677
Fax: (734) 285-3574
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $250.
Total Amount is formed as General ($250) + Research ($0) + Ownership ($0) = $250.
Last reported payment date: 2024-05-23 • Largest payer in this snapshot: ANI Pharmaceuticals, Inc. ($125).
Total Amount
$250
General + Research + Ownership
Payments
2
Total payment records
General Amount
$250
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-05-23
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ANI Pharmaceuticals, Inc. | $125 |
| IDORSIA PHARMACEUTICALS US INC | $125 |
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: 2010-11-19
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 |
|---|---|---|---|---|
| I20101119000454 | I | Internal Medicine | MI | 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 | 313 | 144 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 152 | 48 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 63 | 44 | $0 |
| 83036 | Hemoglobin a1c level | 48 | 31 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 44 | 37 | $0 |
Insurance plans in this area (ZIP 48033)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERNAL MEDICINE | MI | 83036 | Hemoglobin A1C level | 16 | 16 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | MI | |
| Family Practice | MI | |
| - | MI | |
| - | MI | |
| Internal Medicine | MI | |
| Family Practice | MI | |
| Family Practice | MI | |
| Family Practice | MI | |
| Family Practice | MI | |
| - | MI |
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