JOHN ISAAK (M.D.) – Internal Medicine Physician, NPI 1265725519
Internal Medicine Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
2,491 HOSPITALIST in FL
Provider Addresses for JOHN ISAAK (M.D.)
2323 CURLEW RD
ST.7E
DUNEDIN, FL 346989330
Phone:
Fax: (339) 230-0927
Type: Mailing
300 PINELLAS ST
CLEARWATER, FL 337563804
Phone: (727) 462-7907
Fax: (727) 462-7904
Type: Location
31201 US HIGHWAY 19 N STE 3
PALM HARBOR, FL 346844422
Phone: (727) 741-8355
Fax: (727) 683-9575
Type: Mailing
31201 US HIGHWAY 19 N
ST 3
PALM HARBOR, FL 346844422
Phone: (727) 741-8355
Fax: (339) 230-0927
Type: Location
12470 Telecom Dr Ste 100
Temple Terrace, FL 336370904
Phone: (813) 779-6303
Fax: (888) 977-1998
Type: Location
5 Tampa General Cir
HMT750
Tampa, FL 336063601
Phone: (813) 844-3397
Type: Location
300 Pinellas St
Clearwater, FL 337563804
Phone: (727) 462-7907
Fax: (727) 462-7904
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 7 Open Payments records for all available years, with a total value of $141.
Total Amount is formed as General ($141) + Research ($0) + Ownership ($0) = $141.
Last reported payment date: 2024-07-03 • Largest payer in this snapshot: Smith+Nephew, Inc. ($118).
Total Amount
$141
General + Research + Ownership
Payments
7
Total payment records
General Amount
$141
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-07-03
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Smith+Nephew, Inc. | $118 |
| Next Science LLC | $22 |
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: 2014-09-18
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 |
|---|---|---|---|---|
| I20140918000576 | I | Hospitalist | FL | 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 |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 142 | 96 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 90 | 69 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 50 | 50 | $0 |
| 99239 | Hospital discharge day management, more than 30 minutes | 43 | 43 | $0 |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | 17 | 17 | $0 |
Insurance plans in this area (ZIP 34698)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | FL | |
| - | FL | |
| Certified Registered Nurse Anesthetist (Crna) | MI | |
| Internal Medicine | FL | |
| Family Practice | FL | |
| Family Practice | FL | |
| Nurse Practitioner | FL | |
| - | FL | |
| - | FL | |
| - | GA |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.