ISAAC B ANNAN (MD) – Neurology Physician, NPI 1336112234
Neurology Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
1,531 NEUROLOGY in PA
Provider Addresses for ISAAC B ANNAN (MD)
640 E Oregon Rd
Lititz, PA 175439202
Phone: (717) 569-8773
Fax: (717) 735-7992
Type: Location
1836 South Ave
LA Crosse, WI 546015429
Phone: (608) 782-7300
Type: Location
3200 E Racine St
Janesville, WI 535462343
Phone: (608) 371-8000
Fax: (608) 371-8943
Type: Location
640 E OREGON RD
LITITZ, PA 175439202
Phone: (717) 569-8773
Fax: (717) 735-7992
Type: Mailing
350 HOSPITAL DR
MACON, GA 312173838
Phone: (470) 788-1010
Type: Location
3200, East Racine Street, Janesville, Rock County, Wisconsin, 53546, United States
JANESVILLE, WI 535462343
Phone: (608) 371-8000
Fax: (608) 371-8943
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 4 Open Payments records for all available years, with a total value of $97.
Total Amount is formed as General ($97) + Research ($0) + Ownership ($0) = $97.
Last reported payment date: 2024-09-17 • Largest payer in this snapshot: UCB, Inc. ($55).
Total Amount
$97
General + Research + Ownership
Payments
4
Total payment records
General Amount
$97
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-09-17
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| UCB, Inc. | $55 |
| ABBVIE INC. | $42 |
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: 2025-06-17
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 4 Medicare enrollment records; no due dates published yet.
Enrollment records
4
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 |
|---|---|---|---|---|
| I20140820000917 | I | Neurology | GA | TBD |
| I20170112002025 | I | Neurology | WI | TBD |
| I20250303002920 | I | Neurology | AZ | TBD |
| I20250617000017 | I | Neurology | 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 |
|---|---|---|---|---|
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 99 | 49 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 51 | 51 | $0 |
| 99291 | Critical care, first 30-74 minutes | 37 | 26 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 30 | 24 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 17 | 17 | $0 |
Insurance plans in this area (ZIP 17543)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | TN | |
| Emergency Medicine | SC | |
| - | SC | |
| Family Practice | GA | |
| Family Practice | OK | |
| - | GA | |
| Internal Medicine | WA | |
| Family Practice | FL | |
| - | KY | |
| Internal Medicine | SC |
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.